U.S. patent application number 10/022433 was filed with the patent office on 2002-07-18 for floor mat support and drainage structure.
Invention is credited to Blum, Bradley J., Blum, Ronald D., Duston, Dwight P., Kokonaski, William, Kopf, Peter W..
Application Number | 20020092110 10/022433 |
Document ID | / |
Family ID | 27500572 |
Filed Date | 2002-07-18 |
United States Patent
Application |
20020092110 |
Kind Code |
A1 |
Blum, Ronald D. ; et
al. |
July 18, 2002 |
Floor mat support and drainage structure
Abstract
An advanced floor mat is disclosed. In an embodiment of the
present invention, the floor mat includes a cleanable portion. The
floor mat may also include a water dissipation component, a water
absorbing component, a cushioning component, customized graphics, a
transparent cleanable portion, a tacky surface on the cleanable
portion, an antibacterial composition, an antifungal composition,
and a fragrance. The cleanable portion may be erodible and may
include a plurality of cleanable reusable layers. If a tacky
surface is included in the floor mat, an anti-slip feature may be
associated with the tacky surface to help prevent slipping on a
possibly wet tacky surface. The tacky surface may be comprised of a
material that has an inherent anti-slip capability when wet.
Additionally, a sensor system may be included in the floor mat to
assist a user in identifying when the floor mat may require
cleaning. A support and drainage structure for the floor mat is
also described. The support and drainage structure includes sloping
surfaces for directing water coming in contact therewith
downward.
Inventors: |
Blum, Ronald D.; (Roanoke,
VA) ; Blum, Bradley J.; (Roanoke, VA) ;
Duston, Dwight P.; (Laguna Nigel, CA) ; Kokonaski,
William; (Gig Harbor, WA) ; Kopf, Peter W.;
(Sudbury, MA) |
Correspondence
Address: |
KENYON & KENYON
1500 K STREET, N.W., SUITE 700
WASHINGTON
DC
20005
US
|
Family ID: |
27500572 |
Appl. No.: |
10/022433 |
Filed: |
December 20, 2001 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
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10022433 |
Dec 20, 2001 |
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09553234 |
Apr 19, 2000 |
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6233776 |
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10022433 |
Dec 20, 2001 |
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09418752 |
Oct 15, 1999 |
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10022433 |
Dec 20, 2001 |
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09304051 |
May 4, 1999 |
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6219876 |
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60256486 |
Dec 20, 2000 |
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Current U.S.
Class: |
15/215 ; 428/101;
428/120; 428/141; 428/167; 428/172; 428/195.1; 428/343 |
Current CPC
Class: |
A47L 23/22 20130101;
Y10T 428/28 20150115; A47L 23/266 20130101; Y10T 428/24355
20150115; Y10T 428/24025 20150115; Y10T 428/24612 20150115; G09F
19/22 20130101; Y10T 428/24802 20150115; G09F 19/228 20130101; Y10T
428/2457 20150115; Y10T 428/24182 20150115 |
Class at
Publication: |
15/215 ; 428/101;
428/120; 428/141; 428/167; 428/172; 428/195; 428/343 |
International
Class: |
A47L 023/22 |
Claims
What is claimed is:
1. A floor mat support and drainage structure, comprising: a
plurality of sloping surfaces for directing water coming in contact
therewith downward; and support members arranged between said
sloping surfaces for supporting a mat placed thereon.
2. The floor mat support and drainage structure of claim 1, further
comprising walls arranged on sides of said plurality of sloping
surfaces.
3. The floor mat support and drainage structure of claim 1, further
comprising at least one water retention reservoir arranged on an
edge of at least one of said sloping surfaces.
4. The floor mat support and drainage structure of claim 1, wherein
said support members are radially arranged.
5. The floor mat support and drainage structure of claim 2, wherein
said walls are beveled.
6. The floor mat support and drainage structure of claim 1, wherein
upper surfaces of said support members are substantially
co-planar.
7. The floor mat support and drainage structure of claim 1, wherein
upper surfaces of said support members are co-planar with
respective ones of said sloping surfaces.
8. The floor mat support and drainage structure of claim 1, wherein
adjoining ones of said sloping surfaces form an apex.
9. The floor mat support and drainage structure of claim 1, further
comprising a substantially planar section.
10. A floor mat support and drainage structure, comprising two
adjoining sloping surfaces forming an apex, for directing water
coming in contact therewith downward.
11. The floor mat support and drainage structure of claim 10,
wherein said adjoining sloping surfaces are formed in a single
piece of material.
12. The floor mat support and drainage structure of claim 11,
wherein said single piece of material has varying thickness, with a
maximum thickness at or near a center thereof, and decreasing
thickness toward edges thereof.
13. The floor mat support and drainage structure of claim 10,
further comprising transverse members for supporting a mat placed
thereon.
14. The floor mat support and drainage structure of claim 10,
further comprising walls arranged on sides of said two adjoining
sloping surfaces.
15. The floor mat support and drainage structure of claim 10,
further comprising at least one water retention reservoir arranged
on an edge of at least one of said sloping surfaces.
16. The floor mat support and drainage structure of claim 10,
further comprising a substantially planar section for receiving a
tacky mat.
17. A floor mat comprising: a first layer with perforations; and a
second layer adjacent said first layer, with channels extending
across a width thereof.
18. The floor mat of claim 17, wherein said channels are formed by
grooves in a surface of said second layer adjacent said
perforations.
19. The floor mat of claim 17, wherein said second layer comprises
a water-absorptive material.
20. The floor mat of claim 19, wherein said channels are formed in
said water-absorptive material.
21. The floor mat of claim 17, wherein a channel is formed such
that a point in said channel at or near a center of said mat is
higher than ends of said channel.
22. The floor mat of claim 17, further comprising a slip-resistant
layer for contacting a surface that receives said floor mat.
23. The floor mat of claim 17, further comprising at least one of
an anti-fungal agent, an anti-bacterial agent, and a fragrance.
24. A floor mat comprising: a first layer with perforations; and a
second layer adjacent said first layer, wherein said second layer
comprises water-absorptive fibers.
25. The floor mat of claim 24, wherein spaces between said fibers
form channels extending across a width of said mat.
26. The floor mat of claim 24, wherein a fiber is formed such that
a point in said fiber at or near a center of said mat is higher
than ends of said fiber.
27. The floor mat of claim 24, further comprising at least one of
an anti-fungal agent, an anti-bacterial agent, and a fragrance.
28. A floor mat support and drainage structure, comprising: a
plurality of sloping surfaces for directing water coming in contact
therewith downward; radial support members arranged between said
sloping surfaces for supporting a mat placed thereon; walls
arranged on sides of said plurality of sloping surfaces; and at
least one water retention reservoir arranged on an edge of at least
one of said sloping surfaces.
29. A floor mat support and drainage structure, comprising: two
adjoining sloping surfaces forming an apex, for directing water
coming in contact therewith downward; walls arranged on sides of
said two adjoining sloping surfaces; transverse members extending
between said walls for supporting a mat placed thereon; and at
least one water retention reservoir arranged on an edge of at least
one of said sloping surfaces.
30. The floor mat support and drainage structure of claim 29,
wherein said adjoining sloping surfaces are formed in a single
piece of material.
31. A floor mat comprising a non-tacky portion and a tacky portion
configured to overlie a mat support and drainage structure, wherein
said mat support and drainage structure includes a first portion
comprising a plurality of sloping surfaces for directing water
coming in contact therewith downward, and a substantially planar
portion; and wherein said non-tacky portion is configured to extend
substantially over said first portion, and said tacky portion is
configured to extend substantially over said planar portion.
32. A floor mat comprising a non-tacky portion and a tacky portion
configured to overlie a mat support and drainage structure
comprising a plurality of sloping surfaces for directing water
coming in contact therewith downward, wherein both said non-tacky
portion and said tacky portion include water-absorbing and
water-wicking properties.
33. A floor mat assembly comprising: a mat support and drainage
structure comprising a plurality of sloping surfaces for directing
water coming in contact therewith downward, and support members
arranged between said sloping surfaces for supporting a mat placed
thereon; and a mat comprising a base portion having anti-slip
components, and a tacky portion having apertures configured to
receive said anti-slip components.
34. A floor mat assembly comprising: a mat support and drainage
structure comprising a plurality of sloping surfaces for directing
water coming in contact therewith downward, and support members
arranged between said sloping surfaces for supporting a mat placed
thereon, and further comprising anti-slip components; and a tacky
portion having apertures configured to receive said anti-slip
components.
35. A floor mat assembly comprising: a water-absorbing member
cooperating with a water drainage member; anti-slip components; and
a tacky portion having apertures configured to receive said
anti-slip components.
Description
[0001] This application claims the benefit under 35 USC section
119(e) of U.S. provisional application 60/256,486 filed Dec. 20,
2000. Further, this application is a continuation-in-part of U.S.
application Ser. No. 09/553,234, filed Apr. 19, 2000 and issued May
22, 2001 as U.S. Pat. No. 6,233,776. Application Ser. No.
09/553,234 is a continuation-in-part of U.S. application Ser. No.
09/418,752, filed Oct. 15, 1999, which is a continuation-in-part of
U.S. application Ser. No. 09/304,051, filed May 4, 1999 and issued
Apr. 24, 2001 as U.S. Pat. No. 6,219,876.
BACKGROUND AND DISCUSSION OF THE INVENTION
[0002] The present invention relates to a floor mat. More
specifically, the invention provides a floor mat that includes a
cleanable portion. The floor mat may also include a water
dissipation component, a water absorbing component, a cushioning
component, customized graphics, a transparent cleanable portion, a
tacky surface on the cleanable portion, an antibacterial
composition, an antifungal composition, and a fragrance. The
cleanable portion may be erodible and may include a plurality of
cleanable reusable layers. If a tacky surface is included in the
floor mat, an anti-slip feature may be associated with the tacky
surface to help prevent slipping on a possibly wet tacky surface.
Additionally, a sensor system may be included in the floor mat to
assist a user in identifying when the floor mat may require
cleaning.
[0003] Floor mats are known for cleaning the soles of a person's
shoes who is about to enter a particular area or room. One problem
with floor mats in general is how to keep the floor mat
sufficiently clean such that it may perform its function of
cleaning the person's shoes when, by its very nature, it is
purposefully dirtied when performing its function.
[0004] Known floor mats may be comprised of a single, unitary piece
of material. Whereas these single structure floor mats may be kept
clean by, for example, washing the floor mat, it may be required
that the entire floor mat be removed from its location for washing
and thus, the floor mat is not available where desired while the
entire mat is being cleaned. Alternatively, even if the mat can be
cleaned in-place, which may not be a possibility if it is located
in, for example, a carpeted area, it may be inconvenient to clean
the mat in-place.
[0005] U.S. Pat. No. 3,785,102 to Amos discloses a throw-away pad
comprising a plurality of stacked disposable sheets where, when a
particular sheet is dirtied, the dirty sheet is removed and
disposed of. The next sheet that is exposed after the dirty sheet
is discarded is clean and thus, a clean surface is again available.
However, there may be problems with comprising the floor mat of
disposable sheets. Disposing of each dirty sheet may be
uneconomical since each sheet is discarded after it becomes dirty.
Additionally, after some finite number of sheets are disposed of,
no sheets will remain and thus no effective cleaning surface is
available.
[0006] U.S. Pat. No. 3,785,102 to Amos also discloses that an
adhesive can be provided on each sheet's top surface to improve its
ability to remove dirt from a person's shoes. However, again, these
sheets are not cleanable and therefore are not reusable.
[0007] U.S. Pat. No. 3,717,897 to Amos et al. discloses a pad for
cleaning shoes and wheels. The pad includes a thin water-washable
adhesive covering its upper surface for removing dirt from shoes
and wheels. Whereas the '897 patent discloses a pad with a
water-washable adhesive upper surface, the pad is not known for use
in domestic or office-type applications. As stated in the '897
patent, the pad is placed at an entrance doorway leading into a
clean room.
[0008] Tacky floor mats are by far more popular for utilization in
indoor environments that are far removed from exterior outside
entrances, such as for clean rooms that are well-within the
interior of the building in which they are used, e.g., hospital
rooms, computer chip manufacturing spaces, and gymnasiums. Thus,
tacky floor mats are not known for use in areas that are adjacent
to entrances that lead from the outdoor environment for cleaning
the soles of a person's shoes prior to entry into the interior of a
building, such as for example in an entry foyer or on an outdoor
porch.
[0009] Tacky floor mats are not known for use in domestic or
office-type applications, e.g., home or business office use,
because of several known deficiencies. One of these deficiencies is
that their tacky surface will not be as effective if it becomes
wet. Therefore, if the tacky surface floor mat was utilized in an
outdoor environment, such as the outdoor porch mentioned above, or
in an indoor environment that is adjacent to or near an outdoor
entrance, such as an entry foyer of a home or business, for
cleaning a person's shoes prior to further entering the home or
business, the mat is likely to become wet and therefore not
effective. The mat could become wet from, for example, the moisture
in the atmosphere or from moisture carried on the soles of the
person's shoes who steps on the mat. Additionally, if the tacky
surface becomes wet it may become slippery and thus cause a hazard
for the person who steps on it.
[0010] More particularly, over the past several decades, the
adhesives that are typically used in tacky surfaces of floor mats
have evolved to the point that they have been optimized through
commercialization to a certain threshold of tackiness.
Nevertheless, even at this optimal threshold, the tacky surface has
the deficiency described above, wherein the tacky surface may
become slippery when wet.
[0011] Efforts to address this problem by tinkering with the
chemistry of the adhesives used in the tacky surface have been
unavailing. Beyond the optimal threshold of tackiness as described
above (that is, if the tacky surface is made tackier), a trip
hazard is presented when the surface is dry. On the other hand,
below the threshold (that is, if the tacky surface is made less
tacky), a slip hazard is presented when the tacky surface is
wet.
[0012] In consideration of the foregoing, a single chemistry for an
adhesive that provides a tacky surface that is tacky both when wet
and when dry is not known. Accordingly, there is a need for a floor
mat with a tacky surface that can be utilized in both a wet
environment and a dry environment.
[0013] Additional deficiencies with using known tacky floor mats
for home or office-type applications as discussed above is their
likelihood of becoming trip hazards and their lack of aesthetic
appeal. In the '897 patent, because the pad is designed for use in
clean room environments, it is adhesively adhered to the passageway
floor in front of the entrance doorway. This may be satisfactory
for retaining the mat in-place in clean room-type of applications,
however, if it was attempted to use the '897 pad on a carpeted
floor, the pad would not properly adhere to the carpet and thus a
trip hazard would be present. This could result in significant
liability issues. The '897 pad does not have sufficient mass for it
to remain in-place without utilizing an adhesive. Regarding
aesthetics, because tacky floor mats are known only for their
functional characteristics, and thus for use only in "clean
room"-type applications, they are not aesthetically pleasing.
Therefore, for at least the above reasons, tacky floor mats are not
known for use in home or office-type applications.
[0014] Additional drawbacks with known floor mats exist that are
directed to issues of customization for a particular purchaser and
a lack of additional cleaning properties. A floor mat may be the
first object that a visitor to a particular home or business
encounters. As such, the owner of the home or business may want to
utilize the floor mat to graphically convey an initial greeting or
message to the visitor. Whereas floor mats are known that may
include a greeting on them, it is not currently known to allow for
a particular purchaser to customize the displayed graphic so that
the message is tailored to convey a particular message desired by
the purchaser. For example, on Halloween the purchaser may want the
floor mat to display a "Happy Halloween" message. In another
situation, the purchaser may want to greet a particular visitor
with a message such as "Hello, Joe". Currently, it is not known to
provide a floor mat where an individual can customize the floor mat
to display a particular message that they want to convey and in
certain circumstances even change the floor mat's message they want
to convey.
[0015] An additional problem with known floor mats, as mentioned
above, is that they are limited in their ability to clean the soles
of a person's shoes. Whereas known floor mats may be capable of
removing dirt particles from the shoe's soles, they are not able to
disinfect the soles nor provide a scent to the soles to assist in
masking any unpleasant odors that may be associated with the
shoes.
[0016] An additional drawback with known floor mats, even if they
are cleanable, is that they do not assist a user in determining
when the floor mat may require cleaning. Generally, the owner or
custodian of the floor mat does not continuously or regularly
monitor the condition of the floor mat with respect to cleanliness.
Therefore, the floor mat could require cleaning, and because the
owner is not consciously monitoring the condition of the floor mat,
there could be a significant period of time before the owner
realizes that the floor mat requires cleaning. Therefore, it would
be desirable to assist the owner/custodian of the floor mat in
determining when the floor mat requires cleaning.
[0017] Therefore, it would be desirable to provide an advanced
floor mat that could address deficiencies that exist with currently
known floor mats. The advanced floor mat of the present invention
overcomes deficiencies in the prior art and may include a base
portion which incorporates a cleanable portion that is adapted to
be removably received within the floor mat. The floor mat may also
include features such as a water dissipation capability, a water
absorbing capability, a cushioning capability, customized graphics,
a transparent portion, a tacky surface on the cleanable portion, an
antibacterial composition, an antifungal composition, and a
fragrance. The cleanable portion may include the features of being
erodible and containing a plurality of cleanable reusable layers.
If a tacky surface is included in the floor mat, an anti-slip
feature may be associated with the tacky surface to help prevent
slipping on a possibly wet tacky surface. Additionally, a sensor
system may be included in the floor mat to assist a user in
identifying when the floor mat may require cleaning. Other features
will be apparent from the detailed description which follows.
BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The various features of the invention will best be
appreciated by simultaneous reference to the description which
follows and the accompanying drawings, in which:
[0019] FIG. 1 is a perspective view of a floor mat in accordance
with an embodiment of the present invention;
[0020] FIG. 2 is an exploded perspective view of the floor mat of
FIG. 1;
[0021] FIG. 3 is an exploded side view of an alternative embodiment
of the floor mat of the present invention;
[0022] FIG. 4 is an exploded side view of an alternative embodiment
of the floor mat of the present invention;
[0023] FIG. 5 illustrates a third alternative embodiment for a
tacky insert portion with an anti-slip feature for the floor mat of
the present invention;
[0024] FIG. 6 illustrates a fourth alternative embodiment for a
tacky insert portion with an anti-slip feature for the floor mat of
the present invention;
[0025] FIG. 7 is a side view of the embodiment for the tacky insert
portion with an anti-slip feature of FIG. 6;
[0026] FIG. 8 is a perspective view of a fifth embodiment for a
tacky insert portion with an anti-slip feature for the floor mat of
the present invention;
[0027] FIG. 9 illustrates a sixth alternative embodiment for a
tacky insert portion with an anti-slip feature for the floor mat of
the present invention;
[0028] FIG. 10 illustrates the tacky insert portion with an
anti-slip feature of FIG. 9 in conjunction with an alternative
embodiment for the base portion;
[0029] FIG. 11 illustrates a seventh alternative embodiment for a
tacky insert portion with an anti-slip feature and a water
dissipating capability for the floor mat of the present
invention;
[0030] FIG. 12 illustrates an alternative embodiment for a tacky
insert portion and base portion with a water dissipating capability
for the floor mat of the present invention;
[0031] FIG. 13 illustrates a sensor system that may be utilized in
an embodiment of the present invention;
[0032] FIG. 14 is an embodiment for a floor mat where the tacky
portion and the non-tacky portion are separable;
[0033] FIG. 15 is a perspective view of an embodiment of the floor
mat of the present invention as being used in one step of a process
for utilizing the floor mat;
[0034] FIG. 16 is a perspective view of the floor mat of FIG. 15 as
being used in a second step of a process for utilizing the floor
mat;
[0035] FIG. 17 illustrates an alternative embodiment for a floor
mat in accordance with the present invention that includes
interchangeable base portions;
[0036] FIG. 18 illustrates an alternative embodiment for a floor
mat in accordance with the present invention that includes single
sheets for the cleanable portion;
[0037] FIG. 19 illustrates a roll of sheets that may be utilized
with the embodiment of FIG. 18;
[0038] FIG. 20 illustrates a storage container that may be utilized
with the roll of sheets of FIG. 19;
[0039] FIG. 21 illustrates an alternative embodiment for a floor
mat in accordance with the present invention that includes a
scraper movable on tracks;
[0040] FIG. 22 illustrates an alternative embodiment for a floor
mat in accordance with the present invention that includes a
scraper movable on tracks;
[0041] FIG. 23 illustrates an alternative embodiment for a tacky
surface in accordance with the principles of the present
invention;
[0042] FIG. 24 illustrates an alternative embodiment for the tacky
surface of FIG. 23;
[0043] FIG. 25 illustrates another alternative embodiment for a
tacky surface in accordance with the principles of the present
invention;
[0044] FIG. 26 illustrates another alternative embodiment for a
tacky surface in accordance with the principles of the present
invention; and
[0045] FIG. 27 illustrates another alternative embodiment for a
tacky surface in accordance with the principles of the present
invention.
[0046] FIG. 28A illustrates an embodiment of a floor mat support
and drainage structure according to the invention;
[0047] FIG. 28B illustrates an alternative embodiment of the floor
mat support and drainage structure;
[0048] FIG. 28C illustrates an alternative embodiment of the floor
mat support and drainage structure without a retaining
reservoir;
[0049] FIG. 28D illustrates an alternative embodiment of the floor
mat support and drainage structure;
[0050] FIG. 29 illustrates the placement of a floor mat onto the
support and drainage structure;
[0051] FIG. 30 illustrates an alternative embodiment of the floor
mat support and drainage structure, with a two-part floor mat
placed therein;
[0052] FIG. 31 illustrates another alternative embodiment of the
floor mat support and drainage structure with a two-part floor mat
placed therein;
[0053] FIG. 32A illustrates another alternative embodiment of the
floor mat support and drainage structure;
[0054] FIG. 32B illustrates an alternative embodiment of the floor
mat support and drainage structure without a retaining
reservoir;
[0055] FIG. 32C illustrates another alternative embodiment of the
floor mat support and drainage structure;
[0056] FIG. 33 illustrates a floor mat being placed onto a support
and drainage structure according to an embodiment of the
invention;
[0057] FIG. 34 illustrates layers of a floor mat according to an
embodiment of the invention;
[0058] FIG. 35 illustrates the floor mat of FIG. 34 as used with an
embodiment of a support and drainage structure;
[0059] FIG. 36 illustrates layers of a floor mat according to
another embodiment of the invention;
[0060] FIG. 37 illustrates the floor mat of FIG. 36 as used with an
embodiment of a support and drainage structure;
[0061] FIG. 38 illustrates layers of a floor mat according to
another embodiment of the invention;
[0062] FIG. 39 illustrates the floor mat of FIG. 38 as used with an
embodiment of a support and drainage structure; and
[0063] FIG. 40 illustrates an assembly wherein a mat received by a
support and drainage structure according to the invention includes
a tacky insert with apertures to receive anti-slip components of a
base portion of the mat.
DETAILED DESCRIPTION
[0064] FIG. 1 illustrates a first embodiment for a floor mat 100 in
accordance with the principles of the present invention. As can be
seen in FIG. 1, floor mat 100 includes a base portion 200 and a
cleanable insert portion 300. As will be further described later in
this specification, in this embodiment, cleanable portion 300 is
received within base portion 200 and is removable from base portion
200.
[0065] FIG. 2 illustrates an exploded, perspective view of the
floor mat of FIG. 1. As can be seen in FIG. 2, base portion 200 is
formed as a generally flat, planar member and defines a recess 210
within the top surface of base portion 200. Base portion 200
provides sufficient weight and mass for supporting cleanable insert
portion 300 and maintaining the floor mat's positioning on the
surface on which it is placed. Base portion 200 may include, as
will be discussed below, a water dissipation capability, a water
absorption capability, and a cushioning capability and may be
comprised of materials such as polyurethane, polyisoprene and other
cross-linked elastomeric materials, such as nylon-6, molded or
woven to form a porous structure. Recess 210 can be configured in
any of a variety of geometric configurations, however, in the
present embodiment, recess 210 is configured in a rectangular
shape. Recess 210 has a length L.sub.1 and a width W.sub.1. The
depth of recess 210 is such that it is able to receive within it
cleanable insert portion 300 such that when cleanable insert
portion 300 is received within recess 210, the top surface of
cleanable insert portion 300 lies generally in the same plane as
the top surface of base portion 200.
[0066] The top surface of base portion 200 may be colored with any
color depending upon the desires of a particular purchaser,
however, it is preferable that a color be utilized that will
minimize the visibility of any dirt that is accumulated by base
portion 200. For example, it may be desirable that darker colors be
utilized for the top surface of base portion 200 rather than
lighter colors. However, again, any particular color may be
utilized for base portion 200, and particularly the top surface of
base portion 200, depending upon the particular desires of an
individual. Additionally, the base portion 200 may be either
translucent or opaque.
[0067] As can be seen in FIG. 2, the surface of base portion 200
which defines the bottom of recess 210 may include graphics 220 on
that surface. In the illustrated embodiment, the graphics include
pictorial representations of flowers and a text message which
spells out the word "WELCOME". The present invention is not limited
to any particular graphic within recess 210 and the present
invention may include any of a variety of different forms of
graphics.
[0068] Graphics 220 may be modified, and thus customized, by an
individual after the floor mat has been purchased by the owner. The
owner may customize the mat at their home or office and, thus, a
graphic that may be appropriate for a particular situation may be
modified by the individual for display in another situation. For
example, the graphic may display a message stating "Happy
Halloween" for Halloween and may be modified to display "Happy
Holidays" during the winter holiday season. Thus, as can be
understood, the graphics are modifiable by a user and thus, may be
customized for the particular desires of a particular user.
[0069] As stated above, the present invention is not limited to any
particular form for graphics 220. The graphics 220 can be
customized by a user to include any of a variety of different
colors, pictures, messages, or other representations that the user
may want to display. In addition, the visible intensity of a
color(s) can be modified. For example, a color that glows at night
could be included in graphics 220 for an occasion such as
Halloween.
[0070] Any of a variety of different types of structures or methods
may be practiced in the present invention for modifying graphics
220 of floor mat 100 and the present invention is not limited to
any particular methodology or structure for modifying graphics 220.
Additionally, all of the various embodiments contemplated for
providing a modifiable graphic display in the floor mat of the
present invention can be incorporated in either, or both, of the
base portion or the insert portion. For example, the graphics may
consist of pre-formed messages or art forms which may be adhered to
either the surface which defines the bottom of recess 210, such as
by using an adhesive or fastener assembly, e.g., a hook and loop
assembly, or to the underside of insert portion 300 such that, when
insert portion 300 is placed within base portion 200, the graphics
would be visible through a transparent insert portion.
[0071] Alternatively, a variety of different graphics may be stored
within floor mat 100 such that a user is able to selectively
uncover a particular graphic for display while the other available
graphics remain covered within floor mat 100. This type of
selectability is known in other mediums where selectivity between a
variety of different graphics within a common display panel is
desired. For example, advertising bulletin boards at sporting
events are able to selectively display a first particular message
during a first particular period of time and display a second
message during a second period of time on the same bulletin
board.
[0072] A third possible alternative is to provide a modifiable
display on the floor mat. The display surface can be associated
with either the base portion or the insert portion, e.g., on either
the bottom surface of recess 210 or attached to the bottom of
insert portion 300. A display could be included on the front of the
floor mat, on the back of the mat such that it is viewable through
a transparent portion of the mat, embedded in the mat, attached to
the mat, or integrally formed in the mat. For example, the display
could be comprised of a small, thin box of graphics that could
attach to a tacky portion and/or a base portion or any other
component part of the floor mat. However it is associated with the
floor mat, a user may design and display their customized graphic
and may subsequently modify that graphic such that it is replaced
with another graphic. A display surface such as an erasable writing
board could be utilized for this purpose.
[0073] It is also contemplated that a modifiable electronic display
surface could be provided, such as, for example, a liquid crystal
display. The display could be connected to a computer and a
computer generated image could be displayed on the display. Thus,
the image displayed on the display could be modified by generating
a different computer image and displaying that computer image on
the display. The display could be associated with base portion 200,
such as included within recess 210, or could be included on a
bottom surface, facing upward, of insert portion 300.
Alternatively, the display could be integrally formed with either
of the base portion or the insert portion. The modifiable display
could utilize a plurality of different graphics that can be
displayed in any of a variety of manners on the display. For
example, the graphics could be displayed in a generally fixed
position on the display or could scroll across the display, with
both exemplary methodologies displaying multiple graphics either
individually or in combination.
[0074] Other alternatives for modifying the graphics 220 of floor
mat 100 include using light emitting polymers to create, and thus
change, graphics 220. The light emitting polymers can be either
applied to, attached to, or woven into the floor mat. The light
emitting polymers may be utilized on any portion of floor mat 100,
for example, on either the base portion or the insert portion, or
on any other portion of the different embodiments for the floor
mat. Light emitting polymers are known and described in U.S. Pat.
Nos. 5,945,502, 5,869,350, and 5,571,626, which are incorporated
herein by reference in their entirety.
[0075] Other options for a display are to use electronic ink or
electric paper. Electric paper is available from Xerox and is
described in U.S. Pat. Nos. 5,723,204, 5,604,027, 4,126,854, and
4,143,103, which are incorporated herein by reference in their
entirety. Electric paper employs thousands of tiny, electrically
charged beads, called Gyricon, each about the width of a human
hair, to create pixels. The two-tone beads are embedded inside a
liquid-filled plastic sheeting that forms the surface of the paper.
Each bead, half-black, half-white, gyrates in response to an
electric field. Whether the beads are black- or white-side up
determines the image. Because there's no need to refresh the image,
and because the screen isn't backlit, electric paper uses only a
fraction of the power used by conventional electronic displays.
Electromagnetic styluses and printer-like devices can be used for
getting images onto the paper.
[0076] Electronic ink is available from E Ink Corp., at 45 Spinelli
Pl., Cambridge, Mass. 02138. Electronic ink uses a
microencapsulated micromechanical display system. Tiny
microcapsules are captured between two sheets of plastic to create
pixels. Alternatively, the capsules may be sprayed on a surface.
The result is a flexible display material. The tiny capsules are
transparent and contain a mixture of dark ink and white paint
chips. An electric charge is passed through the capsules. Depending
on the electrostatic charge, the paint chips float at the top or
rest on the bottom of each capsule. When the paint chips float at
the top, the surface appears white. When they rest at the bottom,
and thus under the ink, the surface appears black. Each of the two
states is stable: black or white. A transparent electromagnetic
grid laid over the sheet's surface controls the shape of the image.
The display may be wirelessly connected to, for example, a computer
and thus, the World Wide Web by utilizing, for example, a Motorola
paging system. Text on all displays, if multiple displays are used,
can be changed at once by a single editor, through a Web page.
[0077] Again, a display, which could utilize any of the methods
discussed above for modifying the display, could be associated with
any portion of the floor mat, such as base portion 200 within
recess 210 or on a bottom surface, facing upward, of insert portion
300. Alternatively, the display could be integrally formed with
either of the base portion or the insert portion. The display could
be utilized in any of the embodiments disclosed herein for the
floor mat of the present invention, including a floor mat that
includes a tacky surface and a non-tacky floor mat embodiment.
[0078] In further describing base portion 200, as mentioned above,
base portion 200 may also include both a water dissipation
component and a cushioning component. The water dissipation
component provides for transferring moisture from the soles of a
person's shoes that is standing on floor mat 100 to reduce the
degree of moisture transferred to cleanable insert portion 300 and
the cushioning component provides for conforming the floor mat 100
to the shape of the person's soles such that a greater amount of
the debris on the person's soles may be removed by floor mat 100.
The present invention is not limited to any particular structure or
material for the water dissipation component and the cushioning
component. For example, the water dissipation component may be
comprised of any of a wide variety of known materials, such as
polyamides, vinylics, and polyisoprene. It is desirable, but not
required, that the water dissipation component dissipate or move
the water and not retain the water. Thus, porous materials, and not
hydrophilic materials, are desired. The cushioning component may be
comprised of any of a variety of cushioning components to include,
for example, foam rubber.
[0079] FIG. 2 also further illustrates cleanable insert portion
300. As can be seen, cleanable insert portion 300 has a geometric
shape which is complementary in size and form to the recess 210
that is formed within base portion 200. As such, cleanable insert
portion 300 is able to be received securely within recess 210.
Thus, cleanable insert portion 300 has a length L.sub.2 which is
just slightly smaller than the length L.sub.1 of recess 210.
Likewise, cleanable insert portion 300 has a width W.sub.2 which is
also just slightly smaller than width W.sub.1 of recess 210.
[0080] On the bottom side 310 of cleanable insert portion 300,
i.e., that surface which contacts the surface which defines the
bottom of recess 210, an attachment mechanism may be provided such
that cleanable insert portion 300 may be removably attached to base
portion 200 within recess 210. Any of a variety of different
attachment mechanisms may be provided on the bottom surface of
cleanable insert portion 300 to include, for example, a hook and
loop fastener assembly or an adhesive. Regardless of the particular
securement mechanism used to removably attach cleanable insert
portion 300 to base portion 200, in this embodiment, cleanable
insert portion 300 may be removed from base portion 200 such that
it may be cleaned by a user and, after cleaning, be reinserted
within recess 210 such that a clean surface is now provided for
floor mat 100.
[0081] As stated above, cleanable insert portion 300 may be formed
from a transparent material such as hydrophilic aliphatic acrylic
polymers and copolymers incorporating acrylic acid, hydroxy ethyl
methacrylate, and glycerin monomethacrylate. Forming cleanable
insert portion 300 of a transparent material would allow an
individual to view the customized graphics that may be provided
within floor mat 100, as discussed previously. Alternatively, the
insert portion 300 could be opaque.
[0082] Additionally, the top side of cleanable insert portion 300
may include a tacky surface. The tacky surface would provide for
assisting in removing debris from the soles of a person's shoes
that is standing on cleanable insert portion 300. When the top
tacky surface of cleanable insert portion 300 is dirtied to such an
extent that the user desires to clean insert portion 300, in this
embodiment, the user removes insert portion 300 from base portion
200 and cleans insert portion 300 to remove the accumulated debris.
The insert portion 300 is then reinserted into base portion
200.
[0083] The tacky surface that is provided on the top side of
cleanable insert portion 300 could be comprised of any of a variety
of materials, such as polyvinyl chlorides combined with a suitable
plasticizer, plasticized neoprene, polysulfides, and polyurethanes.
Additionally, acrylics, such as butyl acrylate and many of its
homologues, may be utilized. Again, the present invention is not
limited to any particular material. The tacky surface may be
formed, generally, from any adhesive material. The only
consideration, in this embodiment, is that the surface should
maintain its tacky characteristic even after repeated cleaning
cycles.
[0084] The present invention is not limited to any particular
methodology for cleaning insert portion 300. Insert portion 300 may
be cleaned by any of a variety of methods depending upon a
particular material composition for insert portion 300. For
example, insert portion 300 may be cleaned by placing insert
portion within a washing machine and washing insert portion 300 or
insert portion 300 may be cleaned by scrubbing insert portion 300
with a scrub brush and soap and water or with a cleaning agent such
as "Spic 'N Span".
[0085] Additionally, the insert portion 300 could be cleaned by
utilizing a roller that also includes a tacky surface around the
circumference of the roller. The tacky surface of the roller is
comprised of a stronger adhesive than that of the tacky insert
portion such that, as the tacky surface of the roller is rolled
over the tacky surface of the insert portion, any dirt and debris
on the tacky insert portion will be drawn off of the tacky insert
portion and will adhere to the roller. In this manner, a roller
with a tacky surface could be utilized to clean the tacky insert
portion.
[0086] Again, however, the present invention is not limited to any
particular methodology or cleaning agent for cleaning insert
portion 300 and any cleaning methodology or agent compatible with
the composition of insert portion 300 is contemplated.
[0087] Floor mat 100 may also include additional features for
assisting in the cleaning of the soles of a person standing on
floor mat 100. For example, base portion 200 and/or insert portion
300 may include an antibacterial composition and an antifungal
composition. Antibacterial compositions such as anthraquinone
derivatives of polyethylene glycol mono- and di-methacrylate could
be utilized. Thus, floor mat 100 would be bacteriacidal. The
antibacterial feature would be particularly desirable because the
floor mat would be able to both clean structural debris from the
soles of the person's shoes and remove any potentially harmful
bacteria from the person's soles as well.
[0088] Additionally, in order to further provide for a desirable
sole surface prior to entering a particular area, floor mat 100
could also be provided with a fragrance. Flavones such as tricyclic
molecules with aromatic substitution or organic ethers, e.g.,
limonoic acid, could be utilized. The fragrance is transferred from
floor mat 100 to the soles of the person's shoes such that any
undesirable odors are favorably masked by the fragrance.
[0089] The present invention is not only limited to utilizing an
antibacterial composition, an antifungal composition, and/or a
fragrance in floor mat 100. Rather, floor mat 100 could also
incorporate a variety of other substances that would assist in
cleaning the soles of a person's shoes.
[0090] Any variety of structures or methods could be utilized for
associating an antibacterial composition, an antifungal
composition, a fragrance, or any other composition, with floor mat
100. The substances could be applied as releasable, or
dissipatable, coatings to floor mat 100 or could be releasably
embedded as, for example, pellets within the structure of floor mat
100 such that as pressure is applied to floor mat 100 the
substances are dispensed to the soles of the person's shoes.
[0091] FIG. 3 illustrates an alternative embodiment for floor mat
100. In FIG. 3, it is illustrated that base portion 200 may include
separate layers for a water dissipation component 230 and a
cushioning component 240. Water dissipation component 230, in this
embodiment, is disposed on a top side of the cushioning component
240. However, the present invention is not limited to this
particular embodiment for water dissipation component 230 and
cushioning component 240. For example, a single hybrid structure
could be utilized for base portion 200 that would include the
material properties to provide for both water dissipation and
conforming structure.
[0092] Alternatively, FIG. 4 illustrates that the floor mat may
include both a water dissipation component, or wicking layer, and a
water absorbtion layer. In FIG. 4, floor mat 400 includes wicking
layer 410 and water absorption layer 420. The wicking layer 410
could be comprised of polypropylene or olefins, or any other
suitable material that has the properties of moving the water from
the surface of floor mat 400. The water absorption layer 420 is
disposed underneath the wicking layer 410 and absorbs any water
that passes through the wicking layer 410. The water absorption
layer 420 could be periodically removed and dried, such as by
example only, in a drying machine. Of course, a wicking layer 410
may be used either with or without a water absorption layer 420 and
a cushioning layer, as described previously in other embodiments,
and the water absorption layer 420 could be used with or without a
wicking layer 410 and a cushioning layer. Additionally, both the
wicking layer and/or the absorption layer and/or the cushioning
layer could be used with or without a tacky portion.
[0093] Returning to FIG. 3, FIG. 3 also illustrates an alternative
embodiment for insert portion 300. Whereas the previously disclosed
embodiment for insert portion 300 was discussed as a single
structural member that could include a tacky surface on a top side
thereof, the embodiment of FIG. 3 for insert portion 300 is
comprised of a plurality of layers. As can be seen, layers 301-305,
comprise insert portion 300. Each of the layers may include a tacky
surface on a top side thereof, as was described previously for
insert portion 300. In use, a top-most layer, e.g., layer 301, may
be removed from its adjacent lower layer, e.g., layer 302, and may
be independently cleaned. After cleaning, the layer may be
reinstalled within recess 210 on top of the exposed layer of insert
portion 300. In this manner, insert portion 300 may be cleaned by
removing a top-most layer, cleaning that layer, and reinstalling
that layer within recess 210. Whereas each layer is described as
being independently cleanable, it is not required that each
individual layer be cleanable. Each layer may be formed of
materials as described previously when discussing the embodiment of
FIGS. 1 and 2 for the insert portion.
[0094] Other alternative embodiments for insert portion 300 are
contemplated. For example, whereas the previously disclosed
embodiments discussed insert portion 300 as being comprised of one
or more layers with a tacky surface on a top side of the layer(s),
it is not required that insert portion 300 be formed with only a
tacky surface on a top side thereof. More specifically, an
alternative embodiment for insert portion 300 could include forming
insert portion 300 as a single structural member from a material
which is tacky in composition throughout the entire cross-section
of the material. A material such as a blend of a noncross-linked
hydrophilic thermoplastic, preferably a polyethylene glycol
diacrylate with n not exceeding 15, and a hydrophobic material,
such as a polyvinyl neoprene chloride, could be utilized for the
insert portion of this embodiment. By forming insert portion 300
from a uniform, tacky material, the insert portion 300 does not
necessarily have to be removed from recess 210 of base portion 200
to be cleaned. Insert portion 300 could be cleaned in this
alternative embodiment by eroding the top surface of the insert
portion as a result of use of the insert portion. Thus, by
providing an erodible insert portion, the insert portion may be
cleaned by the erosion of its top surface as the insert portion is
used within floor mat 100.
[0095] As insert portion 300 erodes, the exposed surface of insert
portion 300 continues to be tacky in composition because of its
uniform cross-section. As the exposed tacky surface erodes, the
dirt captured by the exposed tacky surface will dissipate as a
result of the erosion and thus, the erosion of the insert portion
itself provides for a cleanable insert portion.
[0096] Alternatively, even with a uniform cross-section of a tacky
substance for insert portion 300, the user may remove insert
portion 300 from recess 210 and separately clean insert portion
300. Thus, the user is not required to rely solely on the erodible
characteristic of insert portion 300 for cleaning of insert portion
300; rather, the user may utilize the erodible cleaning feature of
the insert portion in combination with a separate cleaning step of
removing the insert portion from the base portion and independently
cleaning the insert portion.
[0097] As discussed above, insert portion 300 may be comprised of a
variety of materials, including materials such as tacky plastics,
paper, or adhesives that can be cleanable and may or may not be
erodible and reusable. If paper is utilized, the insert portion may
be formed as a single structural member or as a plurality of
layers, as discussed previously. Additionally, the paper may
include a tacky surface on a topside thereof. The paper may be
translucent, opaque, or colored, and may include a graphic display
thereon.
[0098] As discussed earlier, it is desirable, but not required,
that the floor mat contain a water dissipation and/or absorption
capability. This capability is desired to help prevent the tacky
surface of the insert portion from becoming excessively wet and,
thus, slippery. Whereas it has been discussed that, in order to
help prevent a user from slipping on the tacky surface of the
insert portion, a water dissipation and/or absorbing capability
could be included in the floor mat to reduce the degree of moisture
on the tacky surface, this is not the only structure contemplated
for preventing the tacky insert portion from becoming slippery.
Alternatively, the tacky insert portion itself could be formed to
help prevent slipping. FIGS. 5-12 and 23-27 illustrate alternative
embodiments for tacky insert portion 300. FIG. 5 illustrates tacky
insert portion 300 as including a grid pattern 320 of channels 322
that could be comprised of a non-tacky material. The channels could
be either raised from the surface of insert portion 300 or could
lie co-planar with the top surface of the insert portion. By
forming the channels of a non-tacky material, even if the tacky
material of insert portion 300 became wet, a user would be assisted
in not slipping on the slippery, wet tacky surface of the insert
portion by the presence of the non-tacky surfaces which do not
become slippery when wet.
[0099] FIGS. 6 and 7 illustrate another alternative embodiment for
tacky insert portion 300 which includes anti-slip particles 324,
e.g., silicon or sand particles, which extend above the top surface
330 of the tacky insert portion. It is desirable that the anti-slip
particles be comprised of a material that does not become slippery
when wet and that they be exposed from the tacky surface, however,
it is not required. Even if the anti-slip particles are embedded
within the tacky surface, their extension above the top surface 330
of the tacky insert portion will provide a physical frictional
restraint against slipping for the soles of a person's shoes who is
standing on the floor mat.
[0100] Whereas FIG. 5 illustrates tacky insert portion 300 as
including a grid pattern 320 of channels 322 that could be
comprised of a non-tacky material and FIGS. 6 and 7 illustrate
another alternative embodiment for tacky insert portion 300 which
includes anti-slip particles 324 which extend above the top surface
330 of the tacky insert portion, it is not required that these two
alternative embodiments contain features that are mutually
exclusive. For example, it is contemplated that tacky insert
portion 300 could include both a grid pattern of non-tacky channels
and anti-slip particles, which is not illustrated specifically in
the Figures but which can be easily understood.
[0101] Another alternative for providing a slip-resistant tacky
portion is to include a plurality of anti-slip members, or treads
or nipples, that extend up through and slightly above the surface
of the tacky portion. As can be seen in FIG. 8, in this embodiment,
tacky portion 300 is inserted within a base portion, which may be a
water absorbent border 500, and includes a plurality of apertures
342 within it. Each of a plurality of treads 344, which may extend
upward from a base disposed underneath tacky portion 300, extend up
through one of the plurality of apertures 342. A top-most end of
each tread extends above a top-most surface 340 of tacky portion
300. As a person steps onto tacky portion 300, the quantity and
positioning of the treads 344 is such that the tacky portion is
able to remove debris from the person's shoes and the treads 344,
at least one of which is stepped upon by the person, prevents
slipping of the person on the tacky portion 300 should the tacky
portion 300 become slippery when wet. The treads 344 may compress
when stepped upon such that the top-most end of the tread is
co-planar with the top-most surface 340 of the tacky portion 300.
In this manner, the tread will contact the person's shoes to
prevent slipping but yet not hinder contact between the person's
shoes and the tacky surface of the mat, which enhances the cleaning
of the person's shoes. Therefore, there is a relationship between
the distance that the tread extends above the top-most surface of
the tacky portion and the compressibility of the tread; a
relationship which provides the functionality discussed above.
[0102] The treads may be configured in any shape and size.
Additionally, the treads may be comprised of any material which is
slip-resistant when wet, such as, for example, rubber or plastics.
The treads may include grooves within them to further assist in
preventing a person from slipping on the tacky portion.
[0103] FIGS. 9 and 10 illustrate additional alternative embodiments
for both the tacky insert portion 300 and the base portion 200 that
help to prevent slipping on a potentially wet tacky portion. As can
be seen in FIG. 9, and as discussed previously, tacky insert
portion 300 is comprised of a plurality of layers 301, 302, and
303. Whereas only three layers are illustrated, it can be
understood that any number of layers can be utilized in the present
invention. As can be seen, tacky layers 301-303 each contain a
plurality of integrally formed raised portions 300A. These raised
portions can help to prevent a person from slipping on the tacky
portion by providing increased friction between the top surface of
the tacky layer, due to the raised portions, and the person's
shoes. Thus, these raised portions can substantially reduce the
potential for slipping on the tacky portion if it becomes wet.
[0104] The raised portion 300A can be formed in each layer in a
variety of ways and the present invention is not limited to any
particular method. One method for forming the raised portions is to
assemble the layers into a pad of layers and then insert the entire
pad into a machine press. One face of the press is flat and the
other face, i.e., that face that is facing the non-tacky, or
underside, of the layers, contains an array of bosses or bumps.
When the pad is pressed in the machine press, all of the tacky
layers become embossed with the pattern on the press face, causing
the raised portions, or embossed portions, in each tacky layer of
the pad. Thus, each embossed portion is integrally formed in each
layer and is comprised of an indentation on the underside, or
non-tacky side, of each layer and a raised portion on the
upperside, or tacky side, of each layer.
[0105] As can be understood, in the method as described above for
forming the raised portions, the raised portions of each layer are
aligned with the raised portions of each other layer. It is
desirable, but not required, that the raised portions of each layer
are aligned so that their shape may be easily maintained when the
layers are stacked one upon another.
[0106] As can be seen in FIG. 10, base portion 200 may also be
formed to be complementary to the embossed layers. The surface 200A
that defines a bottom of the recess of base portion 200, which
receives within it the tacky layers 300, can be formed with raised
portions 200B. These raised portions are positioned so that they
are aligned with the raised portions in the tacky layers. Thus, the
raised portions 200B on surface 200A are positioned within the
indentations in the lower-most tacky layer when the layers are
inserted into the recess in the base portion. As can be understood,
these raised portions help to retain and maintain the raised
portions in the tacky layer(s), particularly when only the
lower-most layer(s) remain in the floor mat. However, it is not
required that the base portion be formed with raised portions in
practicing the present invention. The layers may be formed with
raised portions whether or not the base portion includes
complementary raised portions.
[0107] In another alternative embodiment for a tacky portion, the
tacky portion could also include a water dissipating capability.
The tacky portion could be comprised of a hydrophobic porous
structure which would assist in dissipating water from the surface
of the tacky portion.
[0108] FIGS. 11 and 12 illustrate alternative embodiments for the
floor mat of the present invention that provide a water dissipating
capability for the tacky portion. As will be discussed, the
embodiment of FIG. 11 also helps to prevent a person from slipping
on a potentially wet tacky portion.
[0109] FIG. 11 illustrates an embodiment for tacky portion 300
where the tacky layers 301 and 302 of the tacky portion define a
plurality of apertures 300C therein. The apertures of each layer
are aligned with the apertures of each other layer. Thus, because
of the aligned apertures in the layers, the tacky portion is able
to drain surface water from the top-most surface of the tacky
portion, or from the soles of a person's shoes that is standing on
the tacky portion, through the apertures and to the base portion,
within which the layers may be positioned. The base portion, as
discussed previously, may include a water dissipation component
and/or a water absorbing component which would move and/or absorb
the surface water drained from the tacky portion through the
apertures.
[0110] The apertures would also provide for helping to prevent
slipping on a wet surface of the layers, not only by draining
surface water from the surface, but by also providing for enhanced
frictional contact between the shoes of the person stepping on the
layer and the layer itself. The apertures provide for
discontinuities in the surface of the layer which would enhance the
frictional contact between the person's shoes and the layer. The
edges of the surface of the layer which define the apertures would
provide for this enhanced contact. The person's shoes would engage
with the edges, thus enhancing frictional contact for the shoes.
Additionally, the apertures would act as a suction on the bottoms
of the person's shoes, e.g., like suction cups. This suction caused
by the apertures on the person's shoes would also help to prevent
slippage on the surface of the layer.
[0111] FIG. 12 illustrates another embodiment for the floor mat of
the present invention that also provides a water dissipating
capability for the tacky portion. As can be seen, tacky portion 300
includes layers 301 and 302. Base portion 200 defines a recess
where layers 301 and 302 are disposed within the recess. A surface
of the base portion that defines a bottom of the recess includes a
raised portion 200C at or near a center position within the recess.
Thus, the raised portion 200C of the base portion forms a raised
portion in each of the layers. As can be understood, the raised
portion formed in the layers acts to dissipate surface water on the
layers from the layers. The surface water will drain off of the
layers under the force of gravity due to the raised portion.
[0112] Again, any number of layers may be included in tacky portion
300 in the embodiments of FIGS. 11 and 12.
[0113] It is also contemplated that a water absorbing powder, such
as a talcum powder, could be provided in the present invention. The
powder could either be integrated into the floor mat or be
separately associated with the floor mat. The talcum powder would
remove moisture from the soles of a person's shoes when the person
stepped into the powder and the tacky insert portion could then
remove the powder from the person's soles, in addition to any dirt
on the soles, when the person next steps on the tacky insert
portion.
[0114] The present invention also provides an apparatus and method
for determining when the tacky portion, or a layer in the tacky
portion, should be removed for cleaning. Since the tacky portion
assists in removing dirt from the soles of the person's shoes that
steps on the tacky portion, the tacky portion, or a layer thereof,
will become dirty after some number of persons step on the it,
assuming that any particular person's shoes are not exceptionally
dirty. Therefore, it would be desirable to assist a person in
deciding when to remove a dirty tacky portion for cleaning. Again,
as discussed above, this determination can be made after a certain
number of persons step on the mat. Thus, an embodiment of the
present invention as illustrated in FIG. 13 includes a sensor
system 700 that detects the presence of a person on the floor mat
100. The sensor system 700 may detect the presence of a person on
base portion 200 and/or tacky portion 300. Since it is assumed that
a person who steps on base portion 200 will also step on tacky
portion 300, sensing the person's presence on either portion is
sufficient for practicing the present invention.
[0115] Sensor system 700 includes a sensor 710 and a display device
720, e.g., an LED, coupled to sensor 710 and disposed on mat 100
such that it can be viewed. A power source, such as a battery, may
be included on an underside of the floor mat. As mentioned above,
sensor 710 senses the presence of a person on mat 100, e.g., in
this embodiment on tacky portion 300. The sensor can detect the
person's presence by utilizing any of a variety of apparatuses and
methods and can include sensing the pressure applied to the mat by
the weight of the person standing on the mat or by sensing the
motion across the surface of the mat by the movements of the
person. Thus, pressure sensors and motion detectors may be utilized
in the present invention. Sensor system 700 also determines the
number of persons that have stepped on the mat 100 by counting the
number of sensed presences. After the number of presences equals a
defined number of presences, a signal is provided to display device
720, e.g., illuminating the LED, which indicates that the tacky
portion should be removed for cleaning. The present invention is
not limited to removing the tacky portion at any particular number
of sensed presences and the number may be adjusted based on the
particular environmental conditions in which the mat is utilized.
Of course, as can be understood, after the dirty tacky portion or
layer is removed and/or cleaned the sensor system can be reset to
begin counting the total number of presences on the newly cleaned
or exposed layer.
[0116] Alarm device 720 can provide either a visual, audible, or
vibratory signal and the present invention is not limited to
providing any particular type of signal. For example, a visual
signal could consist of a light that is illuminated when the floor
mat should be cleaned and that is not illuminated when the floor
mat does not require cleaning. Alternatively, the light could be
continuously illuminated in one of a plurality of different colors,
with each color signifying a different state of cleanliness for the
floor mat. For example, a green light could signify that the mat
does not need cleaning. A yellow light could indicate the mat is
reaching a state of dirtiness that will soon require cleaning. A
red light, which could blink on and off, could signify that it is
time to clean the floor mat.
[0117] The sensor system of the present invention may be utilized
with any of the embodiments disclosed for the cleanable portion,
which may or may not be an insert and may or may not include layers
and a tacky surface(s), and the base portion.
[0118] Whereas cleanable portion 300 has been discussed as an
insert portion, it is not required that cleanable portion 300 be
inserted into floor mat 100. There exists many alternative
possibilities for associating cleanable portion 300 with floor mat
100. For example, cleanable portion 300 could be placed on top of
base portion 200 or could be positioned adjacent to base portion
200. The present invention is not limited to inserting any of the
embodiments for cleanable portion 300 within base portion 200.
[0119] For example, FIG. 14 illustrates a tacky portion 300 and a
non-tacky portion 200, which may include a water dissipation
component, a water absorbing component, and a cushioning component,
as discussed previously, that are separable. As can be seen in FIG.
14, tacky portion 300 may be bordered within a border 500, which
may be water absorbent, water dissipative, and include a cushioning
component, and may include a plurality of apertures 342 and treads
344 within it. Tacky portion 300 can include any of the embodiments
previously discussed. An attachment layer 600 is positioned on an
underside of both border 500 of tacky portion 300 and non-tacky
portion 200. The border 500 and/or non-tacky portion 200 may be
releasably attached to attachment layer 600. Thus, through
attachment layer 600, border 500, and therefore tacky portion 300,
and non-tacky portion 200 are releasably attachable to each other.
In this manner, it is possible to, for example, position non-tacky
portion 200 outside of a person's home on the front porch and tacky
portion 300 within the person's home.
[0120] Attachment layer 600 can be any of a variety of materials.
All that is required is that the attachment layer be able to
releasable join one portion of the floor mat to a second portion of
the floor mat. For example, a hook and loop fastener assembly,
e.g., Velcro.RTM., can be used with one portion of the assembly on
the attachment layer and the other portion on the underside of the
first portion of the floor mat and the second portion of the floor
mat. Alternatively, an adhesive can be utilized to releasably join
the two portions of the floor mat to the attachment layer.
Additionally, snaps, including any type of male/female connector,
may be used to join the two portions to the attachment layer.
[0121] FIG. 15 illustrates a first process step in utilizing an
embodiment of the floor mat 100 of the present invention. As was
described previously, an embodiment of floor mat 100 includes a
base portion 200 and an insert portion 300. As can be seen in FIG.
15, and as was also discussed previously, a different graphic
display 220 is present in the embodiment of FIG. 15 than was
illustrated in the embodiment of FIGS. 1 and 2. Thus, FIG. 15
displays a "Hello" message with "smiley face" representations in
the graphic 220.
[0122] As can be seen in FIG. 15, in utilizing an embodiment of the
present invention, a user would first step upon base portion 200.
As discussed earlier, base portion 200 may include a water
dissipating and/or absorbing component and is thus able to assist
in removing any moisture from the soles of the person's shoes. As
was also discussed earlier, because base portion 200, in one
embodiment, also includes a cushioning component, base portion 200
conforms to the person's soles when the person steps upon base
portion 200. Whereas not illustrated in FIG. 15, as discussed
previously, an antibacterial composition, an antifungal
composition, a fragrance, or any other cleaning substance may also
be associated with floor mat 100 and applied to the soles of the
person's shoes when the person applies pressure to floor mat
100.
[0123] As can be seen in FIG. 16, the second process step in
utilizing the present invention includes the person stepping onto
insert portion 300 of floor mat 100. As discussed previously,
insert portion 300 may include a tacky surface on a top side
thereof for assisting in removing debris from the soles of the
person's shoes. Additionally, antibacterial compositions,
antifungal compositions, fragrances, or other cleaning compositions
may also be included within insert portion 300 for dispensing to
the soles of the person's shoes.
[0124] After the person steps onto insert portion 300, the user
then steps off of floor mat 100. As described previously, floor mat
100 may be cleaned after an accumulation of dirt on insert portion
300 by any of the methods described previously. Insert portion 300
may be removed from base portion 200 and cleaned, a layer may be
removed from insert portion 300 to be cleaned or discarded, or
insert portion 300 may be cleaned through erosion of insert portion
300. The present invention is not limited to any particular
methodology for cleaning insert portion 300 of floor mat 100.
[0125] FIGS. 17-22 illustrate further alternative embodiments for
the floor mat of the present invention. As can be seen in FIG. 17,
in this embodiment for the floor mat, floor mat 1700 includes a
cleanable portion 1710 and a plurality of base portions 1720A-D. As
can be seen, cleanable portion 1710 is positioned within one of
base portions 1720A-D. In this manner, the floor mat 1700 can be
customized for a particular user by interchanging the cleanable
portion 1710 with one of a variety of base portions 1720A-D. The
base portions 1720A-D can be formed in any of a variety of physical
configurations and can include any of a variety of themes,
graphics, or colors. Thus, a common cleanable portion 1710 may be
utilized with a variety of base portions 1720A-D.
[0126] FIGS. 18-20 illustrate another alternative embodiment for a
floor mat 1800 in accordance with the principles of the present
invention. As can be seen in FIG. 18, floor mat 1800 also includes
a cleanable portion 1810 and a base portion 1820. As discussed
previously, cleanable portion 1810 is received within base portion
1820. In this embodiment, cleanable portion 1810 is comprised of a
single sheet 1810A. The single sheet 1810A may be tacky on a
top-side thereof and may include apertures therein to receive
anti-slip nipples though it, as was also discussed previously. The
single sheet 1810A, in this embodiment, may be removed and replaced
with another sheet when dirty.
[0127] FIG. 19 illustrates that a plurality of sheets 1810B-D, may
be attached to each other and rolled into a roll 1830 of sheets.
The sheets can be joined to each other at a perforated joint to
provide for ease in separating a sheet from the roll of sheets. As
can be understood, a sheet may be separated from the roll of
remaining sheets and may be then inserted into base portion
1820.
[0128] FIG. 20 illustrates that the roll of sheets 1830 may be
stored in a storage device 1840, such as, for example, by mounting
the roll of sheets 1830 on a cabinet door, which may be located in
proximity to the floor mat. In this manner, replacements sheets are
easily organized and stored for use.
[0129] Alternatively, instead of organizing the sheets in a roll
and storing the roll in a cabinet, the sheets could be folder one
upon another such that they form a flat package. The package of
sheets could then be stored underneath of the floor mat 1800 where
individual sheets could be removed from the package and from under
the floor mat, when needed, similar to the way a Kleenex(.RTM.
tissue is dispensed.
[0130] FIG. 21 illustrates another alternative embodiment for a
floor mat in accordance with the present invention. Floor mat 2100
also includes a cleanable/scrapable portion 2110 and a base portion
2120. In this embodiment, cleanable portion 2110 is formed, as
discussed previously in this application, as a single structural
member from a material which is tacky in composition throughout the
entire cross-section of the material. As was also discussed
previously, by forming portion 2110 from a uniform, tacky material,
the portion 2110 does not necessarily have to be removed from the
base portion 2120 to be cleaned. However, in the embodiment
previously discussed, the cleanable portion 2110 could be cleaned
by eroding the top surface of the insert portion as a result of use
of the insert portion. In the embodiment of FIG. 21, the cleanable
portion is cleaned by scraping off a top surface of approximately
2-3 microns from the cleanable portion 2110 by utilizing a scraper
2130.
[0131] Scraper 2130 can include any of a variety of structures,
however, all that is required is that the scraper be capable of
removing a top surface from cleanable portion 2110. For example,
any type of scraping surface can be utilized in scraper 2130, such
as, for example, a dull knife, a razor, or a plane.
[0132] Scraper 2130 is movable on tracks 2140, 2145. Tracks 2140,
2145 are adjacent to cleanable portion 2110 and base portion 2120.
Scraper 2130 may include wheels or other structures, e.g., pins,
which are received within complementary structures, e.g., grooves,
in tracks 2140, 2145. Thus, scraper 2130 is movable across
cleanable portion 2110 on tracks 2140, 2145. The scraper 2130 may
only include a scraping surface on the portion of scraper 2130 that
is movable across cleanable portion 2110. Additionally, it is not
required that two tracks be utilized. The scraper could be movable
within a single track.
[0133] Scraper 2130 may be moved by any of a variety of methods,
including using the foot of a user to engage with the scraper to
move the scraper on the tracks.
[0134] Floor mat 2100 also includes a catch basin 2150 that may be
included at one or both ends of tracks 2140, 2145. Catch basin(s)
2150 includes a recess into which is deposited the shavings from
cleanable portion 2110 after scraper 2130 scrapes the cleanable
portion. Scraper 2130 moves the shavings off of the cleanable
portion and into the catch basin 2150. The shavings from the
cleanable portion deposited into the catch basin may be removed
from the catch basin in any of a variety of ways, including, for
example, by vacuuming the shavings from the catch basin or removing
a detachable catch basin, throwing away the contents from the catch
basin, and reinstalling the catch basin.
[0135] As can be understood, as the cleanable portion is shaved,
the scraper is commensurately lowered on tracks 2140, 2145 such
that the surface of the scraper that engages with the cleanable
portion remains engaged with the cleanable portion. As such, for
example, the scraper may be mounted on a ratchet mechanism such
that, as the scraper is moved across a complete width of the floor
mat, the scraper actuates the ratchet such that the ratchet lowers
the scraper. Alternatively, the scraper could remain in the same
relative position with respect to the tracks and the tracks could
be ratcheted lower with respect to the base portion and cleanable
portion. Additionally, the blade surface of the scraper could be
lowered with respect to the scraper's structure such that the blade
is moved relative to the cleanable portion and the base portion but
the scraper remains in the same relative position with respect to
the tracks and the cleanable portion and the base portion.
[0136] Additionally, it is not required that a base portion be
utilized in the embodiment for floor mat 2100. The cleanable
portion alone can be utilized with the tracks adjacent the
cleanable portion and the scraper movable on the tracks. A catch
basin(s) could still be utilized. As such, FIG. 22 illustrates an
embodiment for floor mat 2200 that includes a cleanable portion
2210 without use of a base portion. Cleanable portion 2210 is
adjacent to tracks 2240, 2245. Scraper 2230 is movable on tracks
2240, 2245. A catch basin 2250 may be included at one or both ends
of tracks 2240,2245.
[0137] As discussed above, there is no known single chemistry which
provides a tacky surface which is tacky both when wet and when dry,
and yet not too tacky under either condition. Accordingly, in still
further alternative embodiments of the present invention, a dual
chemistry may be used for the tacky surface. The dual chemistry
combines adhesive compositions of two different types. Adhesive
compositions of one type are optimally adhesive when dry. Adhesive
compositions of the other type are optimally adhesive when wet. In
combination, the adhesive compositions of the two types can be used
to provide a top exposed surface that is optimally tacky both when
wet and when dry. Thus, when a person's shoe comes in contact with
the top exposed surface, the surface provides good tackiness when
the surface is either dry or wet, and helps to prevent the person
from slipping when the surface is wet.
[0138] By "optimally tacky" as used in the foregoing, it is meant
that, while either of the two types of adhesive compositions may
retain some tackiness when either dry or wet, one type has a best
or serviceable level of tackiness under dry conditions, while the
other type has a best or serviceable level of tackiness under wet
conditions.
[0139] A material that comprises the two types of adhesive
compositions and presents the top exposed tacky surface that comes
in contact with a shoe could assume a variety of embodiments. For
example, the dual-chemistry top exposed tacky surface could be the
surface of a tacky "insert" or "portion," such as insert 300
described in the foregoing, designed to cooperate with a non-tacky
base portion.
[0140] On the other hand, the dual-chemistry top exposed tacky
surface might not be a surface of a tacky "insert" or "portion" as
such. Rather, the dual-chemistry top exposed tacky surface could be
the substantially the entirety of the usable surface of an
independent floor mat.
[0141] Whether the dual-chemistry tacky surface is used in
combination with a non-tacky portion, or whether it is
substantially the entirety of the usable surface of an independent
floor mat, a separate structural member for an anti-slip component
does not need to be used in conjunction with the tacky surface to
prevent slipping on the tacky surface when the tacky surface
becomes wet. On the other hand, if desired, a separate structural
member for an anti-slip component could be used with the tacky
surface.
[0142] Generally, the material that presents the tacky surface
comprises a combination of components having chemistries that
respectively are optimally tacky when dry or optimally tacky when
wet, such that the combination as a whole presents a top exposed
tacky surface that retains a serviceable level of tackiness when
either wet or dry. More particularly, when the tackiness of
components having a chemistry which is optimally tacky when dry is
reduced due to the presence of moisture, the loss of tackiness is
compensated for by the components having a chemistry which is
optimally tacky when wet. On the other hand, when the tackiness of
components having a chemistry which is optimally tacky when wet is
reduced due to the absence of moisture, the loss of tackiness is
compensated for by the components having a chemistry which is
optimally tacky when dry
[0143] The components could be combined in a pattern of alternating
regions with tacky-when-dry properties and tacky-when-wet
properties, respectively. The components could be combined such
that the composite material is segmented into regions with distinct
characteristics such that the material has a substantially non
uniform composition. On the other hand, the components could be
combined with a fine granularity, such that the material has a
substantially uniform composition.
[0144] FIG. 23 illustrates one possible embodiment of a multi-layer
assembly 10 including a material that presents a top exposed tacky
surface that is tacky when either wet or dry. The layers include a
top layer 11, which comprises a material that presents a top
exposed tacky surface that is tacky both when wet and when dry. The
material comprises at least three types of distinct "domains." A
"domain," with respect to a composition of the top layer 11, refers
to a discrete constituent segment of the top layer with chemical
properties distinct from other discrete constituent segments.
[0145] The domains in top layer 11 include a tacky domain with
pressure-sensitive adhesive characteristics and high surface
energy. This tacky domain could comprise, for example, copolymers
of alkyl methacrylates and difunctional comonomers such as
acrylamides, epoxy acrylates, or urethane terminated acrylates and
pressure-sensitive polysiloxane derivatives.
[0146] A second domain of the top layer 11 is a non-tacky
hydrophobic domain of low surface energy. This non-tacky
hydrophobic domain could comprise, for example, polyalkyl
fluroacrylates, acrylic terminated fluoroacrylamides, or
fluorosulfonamides, polysiloxanes derivatized with one or two
acrylate groups, celluloses derivatized with acrylates, styrene
butadiene copolymers or acyclic acrylates or methacrylates. The
methacrylates could include, for example, cyclohexane methacrylate,
norbomene methacrylate, or isobornyl methacrylate.
[0147] A third domain of the top layer 11 is a hydrophilic domain.
The hydrophilic domain could comprise, for example, hydroxyethyl
methacrylate, polyacrylic and methacrylic acids and their salts,
polyvinyl alcohol, polyoxymethylenes, polyamides, polyesters and
polyimides of unsaturated dicarboxylic acids.
[0148] In the top layer 11, tacky domains could be cross-linked,
and hydrophilic domains could be cross-linked, with a cross-link
density, respectively, ranging from 5-20 mole percent. The material
of the top layer is either in an elastomeric or a leathery state in
a range of temperatures in which the floor mat would be in service.
A desired range of glass transition temperatures is 5-25.degree.
C.
[0149] In the top layer 11, a plurality of tacky domains are
interspersed with a plurality of hydrophilic domains. The
hydrophilic domains modulate the overall tackiness of the top layer
11, by causing a tackiness of the top layer 11 in a dry state to be
substantially equal to a tackiness of the top layer 11 in a wet
state.
[0150] A function of the hydrophobic domains of low surface energy
is to prevent the formation of a continuous film of water over the
top layer, and therefore increase the rate of drainage. The
hydrophobic domains also enhance the pressure dependency of the
tackiness of the top layer, thereby reducing tackiness in the
absence of a force. This can help to prevent excessive tackiness
when pressure is applied as the floor mat is actually being used,
and to prevent the tacky surface collecting an excessive amount of
airborne particulate matter.
[0151] The overall morphology of polymeric layer 11 is miceller,
with the hydrophobic domains being substantially at or near the
surface of the layer, and the hydrophilic and tacky domains being
substantially below the surface of the layer. The hydrophilic and
the tacky domains migrate to the surface under wet conditions, and
together, provide the tackiness needed to attract dirt, bacteria
and the like from footwear or other surface to be cleaned, and to
help prevent slipping on the tacky surface when it is wet.
[0152] In fabricating the top layer 11, domain formation can be
enhanced through the use of solvent-induced crystallization.
Depending upon the chosen method of manufacturing or assembly of
the tacky portion, further enhancements may be possible through
selective orientation of the domains during the extrusion,
laminating or application process of the top layer 11.
[0153] In addition to a top layer 11 as described above, the
multi-layer assembly 10 could also include at least one hydrophobic
layer 12. On one side thereof, the hydrophobic layer 12 could be
adjacent to the top layer 11. The hydrophobic layer 12 could be
made of a hydrophobic copolymer. Examples of such a hydrophobic
copolymer include methyl methacrylate copolymers, a styrene
butadiene co-polymer, and polyalkyl or polyaryl siloxanes. The
hydrophobic layer 12 could be bonded to the top layer 11 by means
of, for example, an acrylic adhesive. The glass transition
temperature of the hydrophobic layer may be in the range
5-150.degree. C.
[0154] The hydrophobic layer 12 is designed to efficiently
transport water from the top layer 11. The composition of the
hydrophobic layer 12 is selected to minimize solubility of water
and maximize its diffusivity in the hydrophobic layer 12.
Polysiloxanes as constituents of the hydrophobic layer 12 are
especially desirable from this point of view. It is also important
to minimize the swelling characteristics of the hydrophobic layer
12 in the presence of water, because the desired function of this
layer is to promote drainage and remain relatively dry.
[0155] On a side opposite the side adjacent to the top layer 11,
the hydrophobic layer 12 may be adjacent to a hydrophilic layer 13
made of polyvinyl alcohol, polyoxymethylenes, polyhydroxy esters or
amides. The cross-link density of this hydrophilic layer 13 could
be between 10-30 mole percent, and its glass transition temperature
could be in the range -30.degree. C. to 10.degree. C.
[0156] The hydrophilic layer 13 is capable of absorbing water
transported to it by the hydrophobic layer 12. The hydrophilic
layer 13 may be adhesively bonded to adjacent layers. Absorption of
water by the hydrophilic layer increases its thickness. The
composition and cross-link density of the hydrophilic layer may be
selected so that this layer can hold up to twice its weight in
water (swelling ratio 200%). A function of the hydrophilic layer is
to act as a reservoir of water, when removal of water through
evaporation is slow. At the same time, the cross-link density and
functionality of the hydrophilic layer is carefully controlled so
that it does not unduly retain moisture.
[0157] The multi-layer assembly 10 could further include a bottom
layer 14 for contact with a floor. The bottom layer 14 could be
made of a wear-resistant, anti-skid polymer such as a polyurethane,
a styrene butadiene copolymer, or a polycarbonate. Other materials
suitable for forming the bottom layer 14 include acrylic terminated
aromatic polyurethanes and epoxides. The bottom layer 14 could
generally be cross-linked highly (e.g., 10-50 mole percent), and
its glass transition temperature, when measurable, could be below
5.degree. C. and in any case below 10C. The bottom layer 14 could
be formed so as to have a high surface energy, so that it does not
lose all affinity to a floor surface even in the presence of a film
of water on the floor surface.
[0158] The bottom layer 14 could be especially useful if the
multi-layer assembly 10 were being used as an independent floor
mat. On the other hand, if the multi-layer assembly 10 were being
used as an insert in combination with a non-tacky portion, the
bottom layer 14 might not be present. Instead, an adhesive might be
used on a surface of hydrophilic layer 13 for contacting the
non-tacky portion, to ensure adhesion of the multi-layer assembly
10 to the non-tacky portion.
[0159] The top layer 11 could be about 50-500 microns in thickness.
The hydrophobic layer 12 could be about 100-1000 microns in
thickness, and the hydrophilic layer 13 could be about 250-1500
microns in thickness. The bottom layer 14 could be approximately
250-1000 microns in thickness.
[0160] The multi-layer assembly 10 could be embossed with a pattern
to increase surface area, and could be perforated with a pattern of
holes (2-10 mm in diameter) to provide drainage.
[0161] A multi-layer assembly 10 could be assembled by
manufacturing each of the above-described layers separately, and
then bonding them together using conventional processes.
Alternatively, for example, the top layer 11 could be fabricated
first, and then the other layers could be successively applied or
bonded to the top layer 11 and to each other.
[0162] According to other alternative embodiments, the top layer 11
could comprise a material having a uniform composition. By uniform
composition, it is meant that the material is not divided into
domains, but instead is more finely grained such that the material
has chemical properties that are substantially constant throughout
the material. The chemical properties are such that the material
can absorb water while retaining tackiness.
[0163] For example, the material of uniform composition in top
layer 11 could be made of polymers, such as block copolymers or a
grafted copolymer. The polymers could be pressure-sensitive
adhesives coated or grafted with hydrophilic monomers followed by a
further grafting of a fluoroacrylate. Alternatively, the material
of uniform composition could comprise a mixture of
pressure-sensitive adhesives with hydrophilic fillers such as
fibers or microspheres to bind water.
[0164] As noted above, the multi-layer assembly could be perforated
for improved water drainage. FIG. 24 illustrates one embodiment of
a perforation pattern formed in a multi-layer assembly 15
comprising four layers as described above. Circular holes 16 are
punched, cut, or drilled through all four layers. While circular
holes are shown by way of example, the holes could be of any
arbitrary shape.
[0165] Additional embodiments of the present invention could
utilize two fundamentally different adhesive compositions arranged
in some arbitrary pattern. A first adhesive composition could be
pressure-sensitive and tacky when dry. A second adhesive
composition could be hydrophilic and tacky when wet. The pattern
could be a pattern of regions of the first adhesive composition
alternating with the second adhesive composition. Examples of
tacky-when-dry adhesives include poly(ethyleneco-vinylacatate- )
and polyvinylbutyral. Examples of tacky-when-wet adhesives include
mixtures containing natural and synthetic rubbers in the presence
of plasticizers mixed with hydrocolloid gums and the following
class of chemistries: copolymers of two amino ethyl ethacrylate and
nbutly methacrylate.
[0166] FIG. 25 illustrates a perspective view of a cross section of
a multi-layer assembly 17 utilizing two fundamentally different
adhesive compositions as described above. A top layer 18 comprises
a checkerboard pattern 19 of tacky-when-wet adhesives alternating
with tacky-when-dry adhesives. The checkerboard pattern is shown
only by way of example and other alternating patterns are
contemplated in the present invention. A bottom layer 20 is a
wear-resistant anti-skid layer for contacting a floor. The bottom
layer 20 could be especially useful if the multi-layer assembly 17
were being used as an independent floor mat. On the other hand, if
the multi-layer assembly 17 were being used as an insert in
combination with a non-tacky portion, the bottom layer 20 might not
be present. Instead, an adhesive might be used on a surface of
layer 18 for contacting the non-tacky portion.
[0167] FIG. 26 is perspective view of a cross section of a
multi-layer assembly 21 illustrating yet another embodiment of the
present invention. A top layer 22 comprises a tacky-when-dry
adhesive. A second layer 23 comprises a hydrophilic tacky-when-wet
adhesive. A bottom layer 24 is a wear-resistant anti-skid layer for
contacting a floor.
[0168] Holes 25 are formed in the top layer 22 to enable contact by
the sole of a shoe or other surface to be cleaned with the
tacky-when-wet adhesive at the same time that the tacky-when-dry
adhesive is contacted. Since the second layer 23 is also
hydrophilic, it will swell and fill the holes 25 when wet,
providing greater access to the tacky-when-wet adhesive of layer 23
by a surface to be cleaned, such as the sole of a shoe.
[0169] FIG. 27 illustrates another embodiment wherein the material
that presents the top exposed tacky surface has a substantially
uniform composition. The material comprises a blend of materials
that are tacky when dry with materials that are tacky when wet. The
tacky-when-wet materials include certain hydrocolloid gums (e.g.,
gaur gum, locust bean gum, and the like). Since these hydrocolloid
gums have a large capacity for absorbing moisture, they should
provide good wet adhesive or tackiness. The tacky-when-dry
materials, which are also pressure-sensitive, could include
synthetic and/or natural rubbers in the presence of plasticizers.
The synthetic and/or natural rubbers could be, for example,
polyisobutylenes, natural rubber, silicone rubbers, acrylonitrile
rubbers, polyurethane rubbers, butyl rubber elastomer, and the
like.
[0170] The strength and uniformity of a blend of tacky-when-wet and
tacky-when-dry materials as described above could be increased by
the introduction of a cohesive strengthening agent to the blend.
The cohesive strengthening agent could, for example, be one or more
of natural and artificial fibrous materials such as wood cellulose,
cotton, or Dacron.
[0171] In FIG. 27, a top layer 27 of a multi-layer assembly 26
comprises a blend of pressure-sensitive dry adhesive with a
hydrocolloid gum, mixed with a cohesive strengthening agent. Due to
the cohesive strengthening agent, a surface 28 of the top layer 27
has a uniform appearance of a single material. A bottom layer 29 is
a wear-resistant anti-skid layer for contacting a floor. The bottom
layer 29 might not be present if the layer 27 is being used as an
insert.
[0172] Any of the materials that present a top exposed tacky
surface that is tacky both when wet and when dry as described above
could be used in combination with each other, or in combination
with any of the other layers described. For example, either of
layers 18 or 27 could be used in combination with a hydrophobic
layer and a hydrophilic layer.
[0173] In embodiments according to the present invention, a water
drainage capability is provided to alleviate undesirable effects of
moisture which may become trapped in the mat. Trapped moisture in
the mat could cause mold, bacteria, or algae to form. Such molds,
bacteria, and algae are often the source of certain allergic
reactions and other illnesses experienced by people. Besides the
potential risk of illness, the trapped moisture can also cause an
unpleasant odor near and around the mat.
[0174] In FIG. 28A, an example of a mat support and drainage
structure 30 is shown. The mat support and drainage structure
includes support members 31 to support a floor mat placed thereon
and keep it substantially level. The support members 31 may be
radially arranged. Upper surfaces of the support members 31 for
contacting a mat placed thereon are substantially co-planar.
Between pairs of support members, there is a sloping plane or
surface 32 for directing water that comes into contact with the
surface downward, allowing the water to drain to edges of the mat
support and drainage structure. Embodiments may include a retention
reservoir 33 near one or more edges of the mat support and drainage
structure. Walls 112 may be arranged on sides of the sloping
surfaces and support members. In other embodiments, as illustrated
in FIG. 28C and FIG. 32B, the retention reservoir is not
utilized.
[0175] A bevel 111 may be formed in the walls 112 to prevent people
from tripping over the mat support and drainage structure. The
slope and extent of the bevel may vary depending upon the height
and size of the mat support and drainage structure. The bevel shown
is only an example; other bevel shapes and sizes are also possible
and are well known to those skilled in the art.
[0176] The mat support and drainage structure 30 can be made from
any number of materials, for example, plastic or rubber. The mat
support and drainage structure 30 could be molded, thermoformed,
stamped or otherwise manufactured depending upon the choice of
material, and the number of pieces to be manufactured.
[0177] FIG. 28B illustrates another possible embodiment for a mat
support and drainage structure. The mat support and drainage
structure 34 comprises walls 35 with a plurality of sloping
surfaces 36 that provide water drainage due to gravity. A plurality
of sloping surfaces such as surfaces 36 may be referred to herein
as a "gravitating portion." Surfaces 36 are supported by support
members 37 positioned between a surface 99 of the mat support and
drainage structure, and the sloping surfaces. In the embodiment of
FIG. 28B, upper surfaces of support members 37 are substantially
co-planar with sloping surfaces 36 (i.e., the support members do
not extend beyond a plane of the sloping surfaces as in the
embodiment of FIG. 28A). As moisture comes into contact with
surfaces 36, it will run down these surfaces and into a retention
reservoir 38 which circumscribes the gravitating portion of the mat
support and drainage structure 34.
[0178] In the embodiment illustrated in FIG. 28B, a mat placed on
mat support and drainage structure 34 is supported by an apex 100
formed by adjoining surfaces 36, and by walls 35 of the mat support
and drainage structure. Transverse members may be added to provide
additional support for the mat. This additional support is not
necessarily required for smaller mats of relatively rigid
construction.
[0179] FIG. 28C illustrates an example where the mat support and
drainage structure does not have a retaining reservoir. Here the
mat support and drainage structure 39 is constructed so that the
water flows freely out one or more ends 40 of the mat support and
drainage structure. This type of base would preferably be used with
mats designed for outdoor use.
[0180] In the embodiments described in FIGS. 28B and 28C, a
gravitating portion was described as being supported by support
members. Alternatively, a gravitating portion could also be
constructed from a single piece of material with varying thickness
to create the desired gravitating water flow. Although such
construction could require more material, such construction may be
simpler to manufacture. An example of a mat support and drainage
structure including a one-piece gravitating portion is illustrated
in FIG. 28D. In FIG. 28D, showing a mat support and drainage
structure 3000, a gravitating portion 3001 is fabricated from a
single piece of material having a thickness that decreases toward
edges 3003 thereof. The single piece of material could have a
maximum thickness at an apex 3002 at or near a center thereof. The
single pieces of material thereby presents two adjoining sloping
surfaces forming an apex, for directing water coming into contact
therewith downward.
[0181] The mat support and drainage structure 3000 would support a
mat placed thereon at the apex 3002 of the gravitating portion 3001
and at walls 3004. Transverse members 3005 may be utilized as
additional support for the mat if the mat is particularly large.
The mat support and drainage structure 3000 is shown with a
retaining reservoir 3006 but this is may not be required where the
mat is used outdoors.
[0182] Shapes for a gravitating portion other than that illustrated
for gravitating portion 3001 are also suitable for water drainage
as described above. For example, an inverted bowl or a
3-or-more-sided pyramid are just a few other shapes that could
perform a gravitating function for water drainage as described.
[0183] FIG. 29 illustrates placement of a mat onto one of the mat
support and drainage structures described by, for example, FIGS.
28A-D. In the example of FIG. 29, a mat 42 is sized for the mat
support and drainage structure 43 such that the only exposed area
of the mat support and drainage structure 43 is a section of
retention reservoir on ends of the mat 42. The sizing of the mat 42
allows the water to evaporate from the exposed retention reservoir
rather than staying trapped under the mat. For outdoor use, this
exposed retention reservoir may not be required and, in such cases,
the mat 42 could be sized to extend over the entire top exposed
surface of the mat support and drainage structure. Additionally,
for outdoor use, walls of the mat support and drainage structure
could be removed from sides of the mat support and drainage
structure, allowing water to run onto, for example, outdoor steps
or an outdoor walkway where the water is not likely to cause any
damage. It should be noted, however, that a retention reservoir can
be used outdoors as well.
[0184] Mat 42 could be embodied in any of a variety of forms that
cooperate with the mat support and drainage structure. Mat 42 could
be, for example, any commercially available floor mat.
Alternatively, mat 42 could be any of the embodiments of a floor
mat as described herein, or components of a floor mat as described
herein. For example, mat 42 could comprise solely a tacky portion,
solely a non-tacky portion, or could be a combination of a tacky
portion and a non-tacky portion. Or, mat 42 could be either a
single layer or a multi-layer mat comprising a tacky-when-dry and
tacky-when-wet material as described above. Mat 42 could include a
base portion. The mat support and drainage structure could be
separable from any of the embodiments of the mat 42 as described,
or could be integrally formed with the mat 42.
[0185] FIG. 30 illustrates still further alternative embodiments
according to the invention. In FIG. 30, a mat arrangement 44
comprises a non-tacky portion 45 and a tacky portion 49 cooperating
with a mat support and drainage structure 46. In this mat
arrangement, non-tacky portion 45, which may have water-absorptive
and water-wicking properties, is positioned over gravitating
portion 47 of mat support and drainage structure 46. A
substantially planar section 48 of the mat support and drainage
structure 46 adjacent to gravitating portion 47 is configured to
receive a tacky portion 49. The tacky portion 49 could be a single
layer or a plurality of layers, and cover only a portion of the
planar section 48. The plurality of layers could be separable,
disposable tacky sheets. A recess could be formed in planar section
48, configured to receive either a single-layer or multiple-layer
tacky portion 49. Alternatively, the tacky portion 49, either as a
single layer or a plurality of layers, could extend over the
entirety of the planar section 48 and abut non-tacky portion
45.
[0186] A mat for cooperating with a mat support and drainage
structure 46 need not be separate non-tacky and tacky portions as
illustrated in FIG. 30. Instead, a mat for cooperating with a mat
support and drainage structure 46 could be a single integrated
piece, with a non-tacky, water absorbing portion configured to be
positioned over gravitating portion 47, and a tacky portion
configured to be positioned over planar section 48.
[0187] By positioning the non-tacky, water-absorptive portion over
the gravitating portion as described above, water that drains from
the water-absorptive portion may be stored in the mat support and
drainage structure until it evaporates or is otherwise removed.
Meanwhile, the tacky portion may stay relatively dry, by virtue of
the absorptive portion of the mat being placed in front of the
tacky portion, with respect to a person approaching the mat.
[0188] In another embodiment, both the tacky and non-tacky portions
could be positioned over the gravitating portion. FIG. 31
illustrates such an arrangement. In FIG. 31, a mat arrangement 50
includes both a non-tacky water-absorptive portion 51 and a tacky
portion 52 being positioned over a gravitating portion 53 of a mat
support and drainage structure 54, which may include a
water-retaining reservoir.
[0189] Tacky portion 52 could be a single layer or a plurality of
layers as described above. Tacky portion 52 could also have water
wicking or absorbing features such that it would pass water to the
support and drainage structure below. Non-tacky portion 51 and
tacky portion 52 could be a single integrated piece.
[0190] The mat support and drainage structures, if they are made
from sufficiently heavy material, could be used with multiple mats
as they wear out and are replaced over time.
[0191] An alternative embodiment of a mat support and drainage
structure is illustrated in FIG. 32A. In this embodiment, a mat
support and drainage structure 55 comprises an A-frame structure
formed from two sloping surfaces 57 arranged to form an apex 101 at
or near a center of the mat support and drainage structure. Water
that comes into contact with the A-frame structure drains into
water retention reservoirs 58 on ends of the mat support and
drainage structure 55 through a gravitating action as described
above. In this embodiment, the mat support and drainage structure
may also be formed with additional transverse members 59 to provide
additional support to a mat placed thereon. Again, if the mat is
reasonably small and rigid, crossing members may not be
necessary.
[0192] For outdoor use, the mat support and drainage structure may
not require a retaining reservoir. Such an example is illustrated
in FIG. 32B. In this figure, the mat support and drainage structure
60 has no retaining reservoirs and the water is free to flow out
one of more ends 61 of the mat support and drainage structure.
[0193] In a plan view the mat support and drainage structure may be
a quadrilateral with two long sides and two short sides. The short
sides may be referred to herein as "ends." A distance between the
two long sides is a width of the mat support and drainage
structure, and a distance between the two ends is a length of the
mat support and drainage structure. In view of the foregoing, it is
also possible to construct a mat support and drainage structure
wherein an A-frame structure as described in connection with FIG.
32A is oriented so that the sloping surfaces of the A-frame
structure slope toward the long sides of the mat support and
drainage structure, rather than toward the ends thereof. Such a mat
support and drainage structure is illustrated in FIG. 32C. In this
embodiment, two sloping surfaces 63 are arranged to form an apex at
or near a center region (with respect to the ends) of the mat
support and drainage structure. A non-sloping planar perimeter 103
of the A-frame structure extends between the A-frame structure and
walls of the mat support and drainage structure. Water flowing down
from the two slanting surfaces 63 would be retained in the
non-sloping planar perimeter between the A-frame structure and the
walls. Alternatively, the A-frame structure could extend across the
entire width of the mat support and drainage structure. In this
embodiment, the only retaining reservoirs would be at the ends of
the mat support and drainage structure.
[0194] FIG. 33 illustrates the placement of the top portion of a
mat 66 onto a mat support and drainage structure 67. The mat may be
sized so that, when placed on the mat support and drainage
structure 67, the only exposed area of the mat support and drainage
structure is a small section of reservoir on either end. This is to
allow the water to evaporate rather than staying trapped under the
mat.
[0195] Another example of how to effectively manage the retention
of moisture in a mat is illustrated in FIG. 34. In this embodiment,
a mat 68 is illustrated as primarily a two-layer system. A top
layer of the mat may comprise, for example, a tacky-when-dry and
tacky-when-wet material as described above. However, the top layer
is not limited to any particular kind of material. A bottom layer
can be a flexible or rigid material with a channel formed in an
upper surface thereof adjacent the top layer, and extending along a
width of the mat. An enlarged sectional view 3434 illustrates the
placement of perforations 70 in the mat directly over channels 71
formed along a width of the mat to provide drainage through sides
of the mat when sufficient weight is applied to the mat. Although a
multi-layer mat is illustrated, it is also possible to use a
single-layer mat with perforations as the top layer, in combination
with a bottom layer with channels as shown in FIG. 34.
[0196] FIG. 35 shows an arrangement 72 illustrating the use of a
mat support and drainage structure with a mat 68 described in
connection with FIG. 34. In this embodiment, the mat support and
drainage structure has retaining reservoirs 73, 74 on either end,
respectively. The details of the mat drainage are as described
above, and shown in an enlarged sectional view 35-35. The mat
support and drainage structure need not include a gravitating
portion, since drainage is provided by the mat 68 itself.
[0197] Yet another embodiment of a mat designed to manage moisture
removal is illustrated in FIG. 36. In this embodiment, the mat 77
comprises three layers. Enlarged cross-sectional view 36-36
illustrates a function of mat 77. A top layer 79 could be a thin
film layer, for example formed from plastic or the like, or a stack
of thin film layers over a carrier substrate, with a tacky,
slip-resistant surface as described earlier. However, the top layer
79 is not limited to any particular kind of material. The top layer
of the mat is perforated with holes 80 that allow the moisture to
penetrate the top layer into a middle layer 81 of the mat. The
middle layer 81 comprises water absorptive material(s). Such
materials could be selected such that the middle layer can hold up
to twice its weight in water (swelling ratio of 200%) and may be
constructed from, for example, open cell foam rubber or foam
plastics, a very hydrophilic polymer, or natural and/or man-made
fibers or fabrics. The water absorptive layer 81 is constructed
with small channels 82 that extend across a width of the mat.
Although these channels are illustrated as cylindrical in shape,
any shape that produces an open channel is contemplated.
[0198] A bottom layer 83 of the mat 77 comprises a rigid material,
such as rubber or plastic, and provides slip resistance between the
bottom layer and a surface in contact therewith, for example, a
surface or surfaces of a mat support and drainage structure as
described above. When weight is applied to top layer of the mat,
for example by a person stepping on the mat, excess water and
moisture stored in the middle, water-absorptive layer 81 are forced
out sides of the mat through the channels 82 in the absorptive
layer. A channel may be formed such that a point in the channel at
or near a center of the mat is slightly higher than ends of the
channel at sides of the mat, thereby introducing an angle into the
channel. This would provide drainage out of the mat in the absence
of applied weight on the mat and would also assist in the
evacuation of moisture due to applied weight on the mat
surface.
[0199] FIG. 37 shows an arrangement 84 illustrating the use of a
mat support and drainage structure with a mat 77 described in
connection with FIG. 36. In this embodiment, the mat support and
drainage structure has retaining reservoirs 85, 86 on either end,
respectively. The details of the mat drainage are as described
above, and shown in an enlarged sectional view 37-37. As in the
embodiment of FIG. 35, the mat support and drainage structure need
not include a gravitating portion, since drainage is provided by
the mat 77 itself.
[0200] An alternative to placing channels in the absorptive layer
would be to use absorptive fibers and preferentially orient them
along a width of the mat such that the water would run principally
down the length of the fibers and out the sides of the mat, in the
presence of applied weight. The use of fibers in the absorptive
layer is illustrated in FIG. 38.
[0201] In the case where fibers are used, the mat 88 could also
comprise three layers. An enlarged sectional view 38-38 illustrates
a function of the mat 88. A top layer 90 could be a thin film
layer, for example formed from plastic or the like, or a stack of
thin film layers over a carrier substrate, with a tacky,
slip-resistant surface as described earlier. However, the top layer
is not limited to any particular kind of material. The top layer of
the mat is perforated with holes 91 that allow the moisture to
penetrate the film into a middle layer 92 of the mat. The middle
layer 92 comprises water absorptive fibers 93. These fibers may be
formed, for example, from plastics, a very hydrophilic polymer, or
natural and/or man-made materials. The fibers in the water
absorptive layer 92 are oriented along a width of the mat so that
spaces between the fibers, and the fibers themselves, form channels
that extend across a width of the mat.
[0202] A bottom layer 94 of the mat 88 comprises a rigid material,
such as rubber or plastic, and provides slip resistance between the
bottom layer and a surface in contact therewith. When weight is
applied to top layer of the mat, for example by a person stepping
on the mat, excess water and moisture stored in the middle,
water-absorptive layer 92 are forced out sides of the mat through
channels created by the spaces between the fibers 93 and perhaps
through the fibers themselves. Some or all of the fibers may also
be positioned in the mat such that at a point at or near a center
of the mat, a fiber is slightly higher than at the ends of the
channel at sides of the mat, thereby introducing an angle into the
fiber. This would provide drainage out of the mat in the absence of
applied weight on the mat and would also additionally assist in the
evacuation of moisture due to applied weight on the mat
surface.
[0203] FIG. 39 shows an arrangement 95 illustrating the use of a
mat support and drainage structure with a mat 88 described in
connection with FIG. 38. In this embodiment, the mat support and
drainage structure has retaining reservoirs 96, 97 on either end,
respectively. The details of the mat drainage are as described
above, and shown in an enlarged sectional view 39-39. As with the
embodiments of FIGS. 35 and 37, the mat support and drainage
structure need not include a gravitating portion, since drainage is
provided by the mat 88 itself.
[0204] FIG. 40 illustrates yet another possible embodiment of the
invention. In FIG. 40, an arrangement 400 comprises a mat support
and drainage structure 401 configured to receive a mat 402
including a base portion 403 which may have water-dissipating,
water-absorbing and water-wicking properties as described above in
connection with base portion 200. The mat 402 may further include a
tacky insert 404 and anti-slip components 405. The anti-slip
components could, for example, be treads extending from the base
portion of the mat 402 through apertures in the tacky insert 404 as
shown in FIG. 18. The tacky insert 404 could be a single layer, or
could comprise a plurality of separable layers.
[0205] According to an alternative embodiment, not shown, the mat
support and drainage structure 401 itself could incorporate
anti-slip components that would extend through apertures in a tacky
insert when the tacky insert was placed on the mat support and
drainage structure.
[0206] In all of the above disclosed embodiments, due to the
possible stagnant nature of the water in the mat support and
drainage structure and potential remaining moisture in a mat placed
thereon and having water absorptive features, the addition of
anti-fungal agents, anti-bacterial agents, and/or fragrances could
provide additional benefits and the incorporation of such agents
and or fragrances are included in the present invention. Such
agents and fragrances may be incorporated in the raw materials of
the mat portions prior to molding or fabricating the mat support
and drainage structure and/or the mat. Alternatively, the agents
and fragrances may be applied after fabrication by spraying,
dipping, brushing or dusting the agents and fragrances onto the mat
support and drainage structure and/or the mat.
[0207] Thus, as described previously, the floor mat of the present
invention includes features as described below. It should be noted
that the below-listed features are not all-inclusive of the
features of the floor mat of the present invention. This
specification in its entirety discloses all of the features of the
floor mat of the present invention.
[0208] As described previously, in an embodiment, the floor mat
includes a tacky surface having a top exposed surface with a
surface area and a substantially non-paper anti-slip component
disposed within the surface area of the top exposed surface of the
tacky surface to prevent slipping on the tacky surface when wet.
Thus, the anti-slip component is in operable association with the
top exposed surface of the tacky surface to reduce slippage of a
person on the top exposed surface who steps on the top exposed
surface when the top exposed surface is wet. The anti-slip
component may be integrally included in the top exposed
surface.
[0209] The anti-slip component may include a plurality of channels
as can be seen in FIG. 5 which are comprised of a non-tacky
material where the plurality of channels is extendible from the top
surface of the tacky surface in response to a person stepping on
the tacky surface. Alternatively, the floor mat may include an
anti-slip component that is extendible from the top surface of the
tacky surface in the absence of a person standing on the tacky
surface, such as the treads described previously. Thus, the treads
may be elongated members that have a length extending across the
top exposed surface of the tacky surface which is substantially
greater than a height that the treads extend above the top exposed
surface of the tacky surface.
[0210] Additionally, the anti-slip component may be the apertures
illustrated in FIG. 11.
[0211] The various embodiments for an anti-slip component may be
comprised of a non-tacky material, e.g., non-tacky members, and a
water resistant material. Thus, the anti-slip components may be
water resistant. The anti-slip components may also be comprised of
a material such that they remain functional to prevent slipping on
the tacky surface after a plurality of uses. As such, the anti-slip
component may be comprised of a sufficiently rigid material such
that a configuration of the anti-slip component is substantially
maintained after being stepped on a plurality of times by a person
and may be comprised of a material having a composition which is
substantially maintained after having been stepped on a plurality
of times by the person.
[0212] As was also described previously, in an embodiment, the
floor mat includes a base portion having a non-tacky exposed top
surface area 250 for contacting the soles of a person's shoes
thereon and a tacky portion associated with the non-tacky exposed
top surface area of the base portion and having a tacky exposed top
surface area 350 for contacting the soles of the shoes thereon. As
can be seen at least in FIG. 1, the base portion non-tacky exposed
top surface area 250 is at least as large as the tacky portion
tacky exposed top surface area 350.
[0213] The floor mat's base portion may include a cushioning
component such that when the person's shoes applies pressure to the
base portion and the tacky portion, both the base portion and the
tacky portion conform to a topography of a bottom of the person's
shoes. The tacky portion may also include a tacky surface on a
bottom side of the tacky portion.
[0214] In various embodiments, the base portion may circumscribe
the tacky portion, as can be seen in FIG. 1, or may be located
adjacent to the tacky portion, as can be seen in FIG. 14.
[0215] As can also be seen in at least FIG. 1, the floor mat has a
base portion that has a continuous non-tacky exposed top surface
area 250 for contacting the soles of a person's shoes thereon and a
tacky portion having a tacky exposed top surface area 350 for
contacting the soles of the shoes thereon. As can be seen also in
FIGS. 15 and 16, the non-tacky exposed top surface area of the base
portion and the tacky exposed top surface area of the tacky portion
are both of a size such that an entire sole of an adult-sized shoe
is receivable thereon. The continuous non-tacky exposed top surface
area 250 of the base portion has a first side area 252 disposed on
a first side 352 of the tacky exposed top surface area of the tacky
portion and a second side area 254 disposed on a second, opposing
side 354 of the tacky exposed top surface area of the tacky
portion. The first side area of the continuous non-tacky exposed
top surface area of the base portion is larger than the second side
area of the continuous non-tacky exposed top surface area of the
base portion.
[0216] All of the disclosed embodiments are illustrative of the
various ways in which the present invention may be practiced.
Additionally, any of the disclosed embodiments for the components
of the floor mat, e.g., the base portion, the tacky portion, the
graphic display, and thus all of the features associated with these
components, may be combined in any embodiment of the present
invention and the present invention is not limited to only the
particular combined embodiments disclosed. Other embodiments can be
implemented by those skilled in the art without departing from the
spirit and scope of the present invention.
* * * * *