U.S. patent number 3,886,620 [Application Number 05/181,436] was granted by the patent office on 1975-06-03 for door or shoe mat.
Invention is credited to Harold Miller, Jack Miller, Michael Miller.
United States Patent |
3,886,620 |
Miller , et al. |
June 3, 1975 |
Door or shoe mat
Abstract
This mat is formed of plastic so that all of its projections and
boundary areas are integrally formed with and extended from a base
mat area. Extending upwardly from this base area are flexible and
non-flexible projections. The flexible projections being more
abundant and serving for light-weight scraping of the foot and
non-flexible projections being spaced from one another and of less
number but of such to provide for adequate support for a foot sole
without effecting additional crushing upon the non-flexible
projections. The non-flexible projections having angularly spaced
ridges upon its upper end so that the more heavy scraping of the
foot sole can be effected while the flexible projections remain in
contact with the foot sole to remove the loosened debris effected
with the rigid projections. The flexible projections are arranged
in circular clusters and their ends extend upwardly beyond the top
faces of the non-flexible projections. A peripheral ledge extends
around the base portion to provide a sunken top surface upwardly
from which the flexible and non-flexible projections extend. This
ledge is less than the height of the projections and extending
outwardly and downwardly therefrom is a peripheral boundary for the
mat. Beneath the projections in the base portion and beneath the
boundary area are lightening holes serving as vacuum seal openings
by which the mat can be held tightly upon a floor surface after
being weighted to render the vacuum seal openings effective.
Inventors: |
Miller; Harold (Passaic,
NJ), Miller; Jack (Passaic, NJ), Miller; Michael
(Passaic, NJ) |
Family
ID: |
22664276 |
Appl.
No.: |
05/181,436 |
Filed: |
September 17, 1971 |
Current U.S.
Class: |
15/217;
15/187 |
Current CPC
Class: |
A47L
23/24 (20130101) |
Current International
Class: |
A47L
23/24 (20060101); A47L 23/00 (20060101); A47i
023/26 () |
Field of
Search: |
;15/215,216,217,187,237,238,239,240,241,104.92,188,161 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
Primary Examiner: Hornsby; Harvey C.
Claims
What is claimed is:
1. A door mat comprising a molded one-composite material having a
bottom base portion with top and bottom surfaces, flexible
projections being integrally formed with the top surface of the
base and extending upwardly therefrom with which wiping action can
be effected upon the bottom of a shoe sole, annularly
inter-connecting base ridges extending upwardly from and integral
with each of adjacent flexible projections providable of upright
reinforcement support such that said projections are substantially
rigidly self-supporting but adapted to be flexed under the weight
of a foot-worn shoe; upstanding non-flexible scraper-projections
with an upper top surface having a plurality of upwardly directed
separate scraper sharp edges integrally fused laterally to one
another such that hard or fastened debris on a shoe sole is readily
scraped by the non-flexible projections being dispersed through the
flexible projections and rising upwardly to less than the height of
the free and extended flexible projections and adapted for full
weight of a foot-worn shoe being placed opon the mat to support the
weight of the foot-worn shoe and at the same time providing means
upon which heavier and concentrated wiping action can be effected
upon the more adhered debris upon the shoe sole and while the
flexible projections still lie in contact with the shoe sole for
light wiping action thereupon, said flexible projections being
formed in clusters with the individual projections being circularly
arranged thereabout and circumferentially spaced from one another,
each of the projections extending upwardly from a common base and
being of tapering section and having its ends overlying a plane
extending between the surface of the upper ends of the non-flexible
projections, the diameter of the clusters being generally the same
diameter as the non-flexible projections, the clusters and the
non-flexible projections being spaced from one another to support a
foot sole under its full weight without depressing the flexible
projections below the plane extending across the top surface of the
non-flexible projections, and in which the plurality of scraper
sharp edges of the non-flexible projections are formed as ridges
with notches alternately angularly spaced between adjacent ridges
of said non-flexible projections upper top surfaces and the
plurality of notches and ridges extending radially outwardly from
the center of the top surface of the rigid projections and being
formed as part of the rigid projections providing thereby sharp
rigid scraping edges.
2. A door mat as defined in claim 1, and a peripheral ledge portion
surrounding the top surface of the base and providing thereby a
sunken top surface in which the debris including liquid will be
retained after being scraped from the shoe by the projections and
thereby kept within or upon the mat.
3. A door mat as defined in claim 2, and a peripheral boundary
extending outwardly and downwardly from the peripheral ledge about
the face of the mat and said boundary being provided with parallel
extending ribs upon its top surface.
4. A door mat as defined in claim 1, and said peripheral ledge
surrounding the base having its upper face lying below the upper
ends of the flexible and non-flexible projections.
5. A door mat as defined in claim 1, and lightening holes extending
upwardly from the bottom face of the base and providing vacuum cups
for effecting the tight engagement of the bottom surface of the
base portion with a floor area, said lightening holes being
centrally and vertically aligned with clusters of the flexible
projections and the non-flexible projections whereby the weight of
a shoe foot will be directly provided upon the vacuum seal
lightening holes in the bottom face of the mat.
6. A door mat as defined in claim 1 and said base having a
peripheral ledge extending about the base and providing for a
sunken bottom face, a boundary extending outwardly and downwardly
from the ledge, said boundary being provided with a lightening hole
thereunder that is adapted to provide a vacuum seal extending about
the full peripheral extent of the mat.
7. A door mat as defined in claim 6, and said lightening holes
under the non-flexible extensions having a reduced diameter
upwardly extending space to augment the gripping effect of the
lightening holes upon the floor surface under the projections.
Description
This invention relates to door mats.
It is a principal object of the present invention to provide
effective door mats formed of one piece of molded material and from
which projections extend serving for engagement with the bottom
sole of the shoe to remove debris therefrom upon the foot being run
across the upper ends of the projections.
It is another object of the invention to provide a mat formed of
plastic in one molding operation and as a self contained unit in
which a mat will be provided for light wiping action of the bottom
of the shoe and for heavy wiping action upon the bottom of the shoe
within the same mat area and with the light-weight action being
effected upon the bottom of the shoe while the heavy wiping action
is being performed by the non-flexible upstanding projections.
It is another object to provide a door mat with a boundary area and
a sunken top faced surface depending therefrom and in which the
debris and liquid removed from the foot sole will be contained and
made free of the foot sole by the scraping action.
It is another object of the invention to provide a door mat that
will have a scraping action in which the scraped material will not
lie upon the top of the same but will be collected below the upper
scraping edges of the mat and cannot be given up to a shoe sole
that is later applied to the mat and thus where the debris or
material can be easily removed from the mat without washing
action.
Other objects of the invention are to provide a door mat having the
above objects in mind which is of simple construction, easy to
manufacture, light in weight, durable, has long life, of pleasing
appearance, effective and efficient in use.
For a better understanding of the invention reference may be had to
the following detailed description taken in connection with the
accompanying drawings, in which:
FIG. 1 is a fragmentary perspective view of the door or shoe mat
embodying the features of the present invention.
FIG. 2 is a fragmentary and enlarged top plan view of one corner of
the mat as generally viewed in plan upon line 2--2 of FIG. 1 and in
the direction of the arrows thereof.
FIG. 3 is a fragmentary transverse sectional view with certain of
the projections of the mat shown in elevation and as viewed
generally on line 3--3 of FIG. 2 and looking in the direction of
the arrows thereof.
FIG. 4 is a similar sectional view but with the flexible and
non-flexible projections being shown in full elevation with a foot
shown in phantom thereon with the sole receiving its support from
the rigid non-flexible projections and with the flexible
projections that in their free state extend upwardly beyond the
non-flexible projections and being crushed and their ends deflected
to effect a wiping action on the bottom face of the sole of the
shoe.
Referring now to the figures, 10 represents a door or shoe mat
constructed according to the present invention and generally of
rectangular shape with an outwardly and downwardly inclined
boundary 11 surrounding an inner scraping or shoe mat area
indicated generally at 12. This mat 10 is made from plastic, such
as polystyrene and from a relatively flat plastic mold adapted to
provide the undersurface of the mat which is flat for friction
engaging contact with a floor surface that has lightening holes 13
extending upwardly from its bottom surface 14 under the mat area 12
and a peripheral lightening space 15 lying under the peripheral
boundary area 11. These holes 13 and 15 extending upwardly from the
bottom surface 14 will provide vacuum openings when the mat is
stepped upon and the air squeezed from within the same outwardly
from under the mat and in that way augment the gripping action of
the mat upon a smooth floor surface.
The peripheral boundary 11 may be 2 or 3 inches in width and
extends outwardly and downwardly from a raised ledge 16 extending
upwardly from a sunken top surface 17 overlying the bottom surface
14 and parallel therewith and surrounding the full area 12 and
upwardly from which there extends non-flexible projections 18 and
clusters 19 formed of a series of circularly arranged, tapered
flexible projections, some eight in number, circumferentially
spaced from one another as best seen in FIG. 2. These projections
are indicated at 21 and their outer ends extend upwardly of the
upper end faces of the non-flexible projections 18. These flexible
projections are self supporting, resilient and by drawing a shoe
sole face over the upper ends of the same a scraping action of such
a shoe 22 and the undersurface 23 of its sole 24 will be effected
to remove from the shoe sole any debris or dirt which may have
become adhered to the shoe sole face 23. While these projections 21
may appear flexible and adapted to be crushed as seen in FIG. 4,
they have sufficient rigidity and upon being spread cover
sufficient area as to permit the scraping action of the full face
of a shoe sole. If the full length of the foot is placed upon the
mat area when the scraping action of the foot is not being made,
the mat will support the foot from the upper ends of the more rigid
and non-flexible interspaced projections 18. When heavy scraping
action is desired with the foot these non-flexible projections 18
can serve for the effecting of the heavy scraping action. These
non-flexible projections 18 have their upper ends notched in
several planes about its periphery as indicated at 25 to provide
alternate radially extending and angularly spaced scraping ribs 26
dispersed and extending radially outwardly from a small central
hole 27 depending into the upper notched face of the non-flexible
projections 18. These non-flexible projections 18 replace the
clusters 19 and they are only about one-third as many of them as of
the clusters 19 but the spacings are adequate so that the shoe sole
24 can overlie enough of them to support the shoe without
penetration of the clusters 19 with the shoe sole below a plane
over the upper ends of the non-flexible projections 18.
The holes 13 extending upwardly from the bottom surface 14 of the
mat centrally underlie the respective non-flexible and flexible
cluster projections 18 and 19 as best seen in FIGS. 3 and 4 and
thus at locations to have the weight of the foot to be centered
upon the holes 13 so that the vacuum retaining action provided by
these holes 13 will be most effectively furnished. It should be
seen that the upper ends of the projections 21 of the clusters 19
extend upwardly beyond the more solid or non-flexible projections
18 so that as the foot is wiped thereagainst the upper ends which
may be turned over slightly that there may be full wiping action
for the removal of light weight debris or dirt from the foot. This
debris or dirt can be collected on the mat and will gravitate upon
the second surface 17 any liquid or wet matter will be held against
outward flow from the mat onto the floor by the peripheral ledge 16
surrounding this sunken top surface 17. If desired this mat can be
provided with liquid, in the nature of a disinfectant or otherwise
in order to assist in the removal of the dirt and debris from the
shoe and to provide for a washing action upon the bottom sole 24 of
the shoe 22. When the full footweight is placed upon the mat the
bottom surface 23 of the shoe will span several of the non-flexible
projections 18 so as to crush or lower the projections 21 in order
to permit scraping action to be effected by the more rigid or
non-flexible projections 18.
The holes 13 lying respectively under the non-flexible projections
18 are deepened by a reduced diameter extension of the opening as
indicated at 13' which will even though the projections 18 are made
of relatively non-flexible material give some resiliency to the
projections 18 and at the same time increase the vacuum seal space
thereunder. This hole extension 13' is axially aligned with the top
hole 27 depending downwardly from a top end of the projection 18
but not in communication therewith.
The boundary 11 extends outwardly from the ledge 16 some two or
three inches and runs along parallel side edges of the mat. It
should be understood that this mat does not need to be of
rectangular shape but may be circular in shape and such boundary 11
would be extended continuously about the periphery of the mat and
without the sides ending in angular relationship with one another
at the corners of the mat as with the mat shown. More often these
door mats are generally of rectangular shape and accordingly such a
mat has been shown as a preferred embodiment of the invention.
Since the boundary 11 is relieved by an open area 15 thereunder,
some flexibility can be given to the downwardly and outwardly
extending boundary body. Parallel extending ridges 28 extend
upwardly from its upper surface and provided alternately between
grooves 29 extending between the upper face of the peripheral ledge
16 and the projections 28 and between the projections themselves.
These ribs 28 provide also for scraping edges over which the foot
can be drawn to remove debris although in order to keep the debris
from getting upon the floor it is intended that the scraping action
be done on the mat surface 12 of the mat.
It should be understood that while this mat is formed of a plastic,
it may be also formed of rubber or other suitable materials which
can provide for both flexible and non-flexible portions of the
molded mat. It also should be apparent that this mat while
providing these portions is a composite body in which inherent
properties of the same material allow by varying the transverse
dimension of the projections 21 to be relatively flexible while
larger transverse projections such as with the projections 18
permit the projections to be relatively more rigid and
non-flexible.
It should thus be apparent that there has been provided a mat made
of one material having projections for the removal of debris from
the foot by a light-weight wiping action and also under the same
foot area there is provided a more rigid non-flexible projection by
which at the same time a heavy wiping action can be effected to
remove the more adhering debris.
* * * * *