U.S. patent application number 10/292295 was filed with the patent office on 2004-05-13 for slip-on footwear system.
Invention is credited to Matis, Clark A., Willis, Charles C..
Application Number | 20040088890 10/292295 |
Document ID | / |
Family ID | 32176154 |
Filed Date | 2004-05-13 |
United States Patent
Application |
20040088890 |
Kind Code |
A1 |
Matis, Clark A. ; et
al. |
May 13, 2004 |
Slip-on footwear system
Abstract
A slip-on footwear system including an upper that defines an
elasticized gore in the heel portion of the footwear. In the heel
portion of the footwear, one or more upper panels cooperate to
define a recess, also referred to as a gore, which is bounded by a
perimeter. An elastic panel is secured along the perimeter and
cooperates with the one or more upper panels to further define an
opening through which a foot is inserted into the upper. The
elastic panel is stretchable and resilient so that when a user
inserts their foot into the footwear, the gore opens-up, which in
turn enlarges the opening. A heel flap may be secured to the upper
panels in the heel region below the gore to conceal the gore and
elastic panel, without inhibiting the stretch of the elastic panel.
The heel flap may also add structural rigidity to the footwear.
Inventors: |
Matis, Clark A.; (Charlotte,
VT) ; Willis, Charles C.; (North Somerset,
GB) |
Correspondence
Address: |
Warner Norcross & Judd LLP
900 Fifth Third Center
111 Lyon Street, N.W.
Grand Rapids
MI
49503-2487
US
|
Family ID: |
32176154 |
Appl. No.: |
10/292295 |
Filed: |
November 12, 2002 |
Current U.S.
Class: |
36/138 ; 36/105;
36/9R |
Current CPC
Class: |
A43B 23/047 20130101;
A43B 3/08 20130101; A43C 11/006 20130101 |
Class at
Publication: |
036/138 ;
036/105; 036/009.00R |
International
Class: |
A43B 011/00 |
Claims
The embodiments of the invention in which an exclusive property or
privilege is claimed are defined as follows:
1. An upper for an article of footwear including a forefoot portion
and a heel portion comprising: a first panel terminating at a first
end in the heel portion; a second panel terminating at a second end
in the heel portion; and an elastic material joined with the first
and the second end, located substantially entirely in the heel
portion, wherein the first end and the second end are movable away
from one another and retractable toward one another so that a foot
is insertable into the upper.
2. The upper of claim 1 comprising a third panel secured to at
least one of the first and second panels, the third panel
concealing the elastic material.
3. The upper of claim 1 wherein the first end includes a first
portion and a second portion, the second end includes a third
portion and a fourth portion, wherein the first portion is joined
with the third portion, and wherein the elastic material is joined
with the second portion and the fourth portion.
4. The upper of claim 3 comprising a third panel secured to at
least one of the first and second portions and covering the elastic
material.
5. The upper of claim 4 wherein the third panel is secured to the
first and third portions and adds structural rigidity to the heel
portion.
6. The upper of claim 1 wherein the first panel and the second
panel are integrally joined with one another in the forefoot
portion.
7. The upper of claim 1 wherein the first panel, second panel and
the elastic material cooperate to define at least a portion of an
opening through which a foot is inserted, wherein the elastic
material enables the opening to enlarge when a foot is inserted
through the opening.
8. A footwear construction comprising: an upper including a heel
portion, the upper defining an opening through which a foot is
inserted into the footwear, the upper defining a gore in the heel
portion, the gore bounded by an edge; a stretchable member secured
to the edge, wherein the opening enlarges when the stretchable
member is stretched; and an outsole secured to the upper.
9. The footwear construction of claim 8 comprising a heel flap, the
heel flap disposed in the heel portion and concealing at least a
portion of the stretchable member from view.
10. The footwear construction of claim 9 wherein the heel portion
is of a depth including a first portion adjacent the opening and a
second portion adjacent the outsole, and wherein the gore is
defined within the first portion and wherein the heel flap is
secured to the upper in the second portion.
11. The footwear construction of claim 7 wherein the upper includes
an interior and an exterior.
12. The footwear construction of claim 11 comprising a cover panel
secured to the interior and the exterior, the cover panel
concealing the stretchable member without preventing the
stretchable member from stretching.
13. The footwear construction of claim 7 comprising a cover secured
to the upper and disposed over the gore.
14. The footwear construction of claim 13 wherein the gore is
defined substantially only into the heel portion.
15. A footwear construction comprising; an outsole; an upper joined
with the outsole, the upper including a heel portion, the upper
defining an opening through which a foot is inserted, the upper
defining a recess in the heel portion; and a flexible and resilient
member secured to the upper in the recess, wherein the member
stretches to enlarge the opening when a foot is inserted into the
footwear construction.
16. The footwear construction of claim 15 comprising a heel panel
that conceals the member without preventing the member from
stretching.
17. A method for manufacturing footwear comprising: providing an
upper defining an opening and including a forefoot portion and a
heel portion, the upper defining a gore in the heel portion;
securing an elastic member to the upper within the gore; and
joining the upper with an outsole.
18. The method of claim 17 wherein the opening is bounded by a
perimeter and the elastic member forms a portion of the perimeter
in the heel region.
19. The method of claim 17 wherein the elastic member is
stretchable so that the opening enlarges when a foot is inserted
through the opening.
20. The method of claim 17 comprising securing a heel flap to the
upper to conceal at least one of the elastic member and the
gore.
21. A method for manufacturing a footwear upper including a heel
region and a forefoot region comprising: providing a first panel in
the forefoot region; joining a second panel and a third panel to
one another in a first area in the heel region; and joining each of
the second panel and the third panel to an elastic member in a
second area in the heel region, wherein the elastic member enables
the second panel and third panel to move relative to one another in
the heel region.
22. The method of claim 21 comprising securing a heel flap to the
first area, the heel flap concealing the elastic member.
23. The method of claim 21 comprising covering at least a portion
of the elastic member with a cover without restricting movement of
the second panel and the third panel relative to one another.
24. The method of claim 21 wherein the first, second and third
panels are integrally joined with one another to form a unitary
piece of material.
Description
BACKGROUND
[0001] The present invention relates to footwear and, more
particularly, to a slip-on footwear construction and a method for
making the same.
[0002] Many conventional footwear designs, including work, walking
and athletic designs, enable a user to easily don the footwear
without substantial use of their hands. These designs are generally
referred to as "slip-on" designs. Typically, a user puts on slip-on
footwear simply by inserting their foot through an opening in the
footwear and pushing the foot forward.
[0003] A popular slip-on design is the "twin gore" design. Footwear
with this design defines single gores on opposite sides of the foot
in the forefoot region of the footwear. Specifically, the gores are
defined by a void between the vamp (i.e., the portion of the
footwear that covers the toes and upper portion of the forefoot)
and the side panels (i.e., the portions of the footwear in the
forefoot that cover the medial and lateral sides the foot). Within
the gores, a piece of elastic is secured to the vamp and the
respective side panels. The elastic is clearly visible between the
vamp and respective side panels.
[0004] Twin gore footwear is easy to put on the foot because as the
foot is inserted into the footwear, the elastic allows the vamp to
move away from the side panels, thereby providing more room for the
upper portion of the forefoot, and subsequently the remainder of
the foot, to slide into the shoe. After the foot is fully inserted
in the footwear, the elastic retracts to conform the vamp to the
upper forefoot.
[0005] Although the twin gore design enables users to easily put on
footwear, it suffers a number of shortcomings. First, footwear with
the twin gore design frequently feels like it is poorly secured to
the wearer's feet. It is believed that this feeling is the result
of the forefoot stretching the elastic within the gore and moving
the vamp away from the side panels. As a result, the user's heel
comes partially out of the shoe during the push-off portion of a
wearer's stride. This characteristic reduces the wearer's
confidence in the footwear, particularly when conducting rigorous
activity. Second, in some twin gore designs, the elastic visible
within the gore detracts from the aesthetics of the footwear.
Third, if not well-protected, the elastic within the gores may tear
or abrade with repeated exposure to obstacles that the wearer may
encounter with the upper part of their forefoot. As a result, the
vamp may permanently separate from the side panels, thereby
rendering the footwear unsafe. Fourth, wearers with relatively long
forefeet frequently discover that with the twin gore design, the
vamp does not separate far enough from the side panels to allow
their foot to be easily inserted into the shoe. Therefore, the
wearer must manually pull the shoe onto the foot with significant
force. In effect, this defeats the purpose of the twin gore
design.
SUMMARY OF THE INVENTION
[0006] The aforementioned problems are overcome in the present
invention that provides a slip-on footwear including an elasticized
gore defined in the heel portion of the footwear. A footwear upper
defines a gore in the heel portion of the upper and a resilient and
flexible material is secured to the upper within the gore. The
material is stretchable to enable an opening defined by the upper
to enlarge so that a user may easily insert their foot into the
footwear.
[0007] In one embodiment, the footwear upper includes side panels
that are secured to one another and cooperate to define a recess or
gore in the heel of the footwear upper. An elastic material is
secured to edges of the side panels within the gore. Optionally,
where a single heel panel is substituted for or secured to the side
panels in the heel portion, the heel panel defines a gore and the
elastic material is secured to the heel panel. The elastic material
allows the side panels to move away from one another and thereby
facilitate insertion of a wearer's foot into the footwear.
[0008] In a specific embodiment, a heel flap, also referred to as a
cover panel, is disposed over the elastic material and secured to
the upper. The heel flap conceals at least a portion of the elastic
material and the gore without inhibiting the ability of the elastic
material to stretch and facilitate insertion of the foot into the
footwear. Optionally, the heel flap is secured to an exterior of
the upper, folds over the elastic material, and is secured again to
the upper on an interior of the upper.
[0009] In a more specific embodiment, the heel flap is secured to
the upper in an area beneath the gore in the heel portion of the
footwear to increase rigidity of the footwear in the heel
portion.
[0010] Footwear incorporating the slip-on system of the present
invention preferably is manufactured using the general steps of (a)
providing an upper that defines an opening and defines a gore in
the heel portion of the upper, (b) securing an elastic material to
the upper within the gore, and (c) joining the upper with an
outsole. Optionally, a heel flap is disposed over the elastic
material to conceal all or part of the material without restricting
or preventing the material from stretching so that the opening
enlarges when a foot is inserted through the opening.
[0011] The present invention provides a unique slip-on footwear
construction having a previously unachieved combination of being
easy to put on the foot and feeling well-secured to the foot when
worn. With the elasticized gore in the heel region of the upper,
panels in the forefoot of the footwear remain relatively immovable
in relation to one another, even in strenuous activity. Therefore,
the wearer's heel is less likely to come up and out of the heel
portion of the footwear. Additionally, with the elastic material
positioned in the heel of the footwear, it is less likely to abrade
or be torn by obstacles that the wearer may walk through.
Furthermore, in footwear of the present invention including a heel
flap that covers the elastic material, the elastic material is
further protected and prevented from interfering with insertion of
a foot into the footwear. Moreover, with the heel flap covering the
gore, the footwear has a clean and streamlined look. Finally, where
the heel flap is secured to the upper below the gore in the heel
portion of the footwear, the footwear exhibits good structural
rigidity.
[0012] These and other objects, advantages and features of the
invention will be more readily understood and appreciated by
reference to the detailed description of the invention and the
drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
[0013] FIG. 1 is a rear perspective view of an article of footwear
incorporating the slip-on system of the present invention;
[0014] FIG. 2 is a rear elevational view of the article of
footwear;
[0015] FIG. 3 is a rear elevational view of the article of footwear
showing an elasticized gore of the slip-on system;
[0016] FIG. 4 is a top plan view of the article of footwear;
[0017] FIG. 5 is a front perspective of the article of footwear;
and
[0018] FIG. 6 is a left side elevational of the article of
footwear, the right side being a mirror image thereof.
DETAILED DESCRIPTION OF THE INVENTION
[0019] I. Overview
[0020] Footwear constructed in accordance with an embodiment of the
present invention is shown in FIGS. 1-6 and generally designated
10. The shoe 10 includes an upper 20 joined with an outsole 30. The
upper 20 defines an opening 40 through which a foot is placed to
slip the wearer's foot into the shoe 10. The upper 20 and shoe 10
are divided generally into a forefoot section 28 and a heel section
26. A slip-on system 50 is incorporated into the heel portion 26,
and generally includes a recess or gore 54 that is defined in the
heel portion 26 of the upper. A flexible and resilient material 156
is secured to the upper 10 within the gore 54.
[0021] For purposes of disclosure, the present invention is
described in connection with a casual shoe that includes an upper
constructed from an integral panel. For example, the vamp 23 and
the side panels 22 and 24 of the shoe are constructed from one
piece of material. As will be appreciated, the present invention is
well suited for use with other types of soled footwear, and
multi-paneled uppers as the application requires.
[0022] II. Structure
[0023] The components of the shoe 10 of the present invention will
now be described in more detail. The upper 20 includes a slip-on
system 50 and is secured to the outsole 30 in a conventional
manner.
[0024] As shown in FIGS. 1-3, the upper 20 generally includes one
piece of material that forms the vamp 23 and the side panels 22 and
24. However, the upper may be divided into separate panels
constructed of different materials and secured to one another in a
conventional manner. Optionally, the vamp and side panels as shown
may be substituted with other conventional footwear panels, for
example, the vamp 23 may be replaced with a panel or panels that
include a lacing system.
[0025] The upper 20 also defines an opening 40 that is bounded by a
perimeter 42. The opening 40 provides an entrance to the upper
through which a foot may be inserted to place the foot within the
upper 20 and effectively don the footwear 10. As shown, the vamp 23
and side panels 22 and 24 form a portion of the perimeter, and the
flexible panel 56 of the slip-on system 50, described below, forms
another portion of the perimeter 42. Optionally, the perimeter may
include cushioning.
[0026] The upper 20, as well as the footwear 10 in general, is
divided into a heel portion 26 and a forefoot portion 28. Depending
on the configuration of the shoe, and the actual boundary of the
heel portion 26 and forefoot portion 28 may vary from that shown in
the figures as the application requires. As shown in FIG. 4, the
heel portion 26 of the upper 20 also includes an apex 27, which
defines the rearmost portion of the footwear, adjacent the
heel.
[0027] The upper 20 components may be manufactured from leather,
canvas, nylon or other suitable materials and may include a liner
(not shown) or other conventional accessories.
[0028] The outsole 30 may be a conventional solid outsole secured
to the upper in a conventional manner such as by stitching, gluing,
stapling or securing with other fastening elements. Optionally, the
outsole 30 may be an outsole shell within which a foot bed (not
shown) is disposed.
[0029] With reference to FIGS. 1 and 3, the slip-on system 50 is
included in the shoe 10, preferably within the heel portion 26. The
slip-on system 50 enables the side panels to move away from one
another, at least in the portion of the depth D of the upper 20
within which gore 54 is defined. More generally, the slip-on system
50 allows the opening 40 to enlarge when a foot is inserted through
it.
[0030] In the slip-on system, the upper 20 in the heel portion 26
defines a recess, also referred to as a gore or opening 54, which
is bounded by the edge 55, also referred to as a perimeter or
boundary. In a specific embodiment, the upper 20 defines the gore
in the apex 27 of the heel portion 26, shown in FIG. 4; however,
the gore may extend beyond the apex 27 within the heel portion as
the application requires. Optionally, the gore may be defined
substantially only in the heel portion of the footwear, and in
another embodiment, the gore may be defined substantially only in
the apex region. In a more specific embodiment, the gore is defined
in the upper half of depth D, and in an even more specific
embodiment, the gore is defined in the upper two-thirds of the
depth D. However, the gore may be defined in any portion of the
depth D of the upper 20 as desired.
[0031] As shown in FIGS. 1 and 3, the gore 54 is rounded in the
lower portion, nearest the outsole 30, and tapers outward in the
upper portion of the depth D of the upper 20. Optionally, the gore
may be of any shape or configuration, including but not limited to,
a square shape, a rectangular shape, a triangular shape, a V-shape,
and the like.
[0032] With reference to FIG. 3, the free end portions of side
panels 22 and 24 within the gore define the edge 55 and the end
portions of the side panels 22 and 24 are joined to one another
beneath the gore 54. In one embodiment, the panels are joined in
the lower half of the depth D of upper 20, and in another
embodiment, in the lower one-third of the depth D; however, the
panels may be joined in and form any portion of the depth D as
desired. Moreover, the panels may be joined with any conventional
fastening means, such as stitching, staples, rivets, glue and the
like. Optionally, in an embodiment where a heel panel (not shown)
joins or is joined with the side panels 22 and 24, that heel panel
may define the gore and form the edge 55.
[0033] A panel or material 56 is secured to the edge 55 of the gore
54 with conventional fastening means, for example with stitching 57
as shown, or other fastening means such as glue, rivets, staples
and the like. The panel is constructed of a flexible and resilient
material, for example, elastic, neoprene, synthetic rubber, rubber,
and the like. The panel 56 preferably is resilient and flexible to
allow the panels 22 and 24 to move away from each other in the
directions shown with the arrows in FIG. 3 as a foot is inserted
through the opening 40. Optionally, the panel 56 also pulls the
panels 22 and 24 back toward one another after a foot is fully
inserted into the footwear 10.
[0034] As shown in FIGS. 1 and 3, the panel is secured to the edge
of the gore 54 along the entire edge, and generally is of the same
shape of the gore. As the application requires, however, the
elastic panel may be of a different shape than the gore. Moreover,
the panel 56 may be secured to portions of the edge on opposite
sides of the gore. For example, the panel 56 may be secured to the
edge 55 adjacent the perimeter 42, but not secured to the edge 55
in the lowermost, rounded portion of the gore 54.
[0035] Referring to FIGS. 1-3, the gore 54 may be coincident with
the perimeter 42 of the opening 40 defined by the upper so that the
panel 56 forms a portion of the perimeter 42. Additional stitching
(not shown) may be added to the panel 56 adjacent the perimeter to
secure the panel 56 to the perimeter 42 and increase
durability.
[0036] With reference to FIGS. 3-5, the slip-on system 50
optionally includes a heel flap 52, also referred to as a cover or
cover panel. The cover panel 52 generally is disposed over the gore
54 and elastic panel 56. Preferably, the cover panel conceals
substantially all of the gore 54 and cover panel 56. The elastic
panel 56 may be exposed when the panels 22 and 24 are pulled away
from one another a significant distance so that the panel 56
stretches beyond the edges of the cover panel 52; however, it is
preferred that significant stretching of the panel 56 is required
for this to occur.
[0037] In one embodiment, the cover panel 52 extends upward from
the outsole 30 on the exterior of the upper 20 over the elastic
panel 56, and then downward toward the outsole 30 on the interior
of the upper. The cover panel may be secured to the exterior and/or
interior of the upper with stitching 51 or any other conventional
fastening means such as staples, glue, rivets and the like. As
shown in FIGS. 2 and 3, stitching 51 extends along the edges of
cover panel 52 from the outsole upwardly along the depth D of the
upper 20, then traverses the width of the cover panel 53 and
continues back downward to the outsole 30 along the edge of the
cover panel. The cover panel 52 may be stitched to the interior of
the upper in a similar manner and, if desired, the stitching may
pass completely through the cover panel 52 on the exterior of the
upper, the upper 20, and the cover panel 52 on the interior of the
upper.
[0038] In the region where the cover panel 53 and upper 20 are
joined, an additional heel panel is effectively formed. This heel
panel may enhance the rigidity of the shoe 10 and the structural
support provided in the heel portion 26 of the shoe. In an optional
embodiment, however, the cover panel extends below the lowermost
portion of the gore 54 a distance sufficient to fasten the cover
panel 52 to the upper 20.
[0039] With reference to FIGS. 1 and 3, the stitching 51, does not
extend above that portion of the depth D of the upper that
corresponds to the gore 54. With this stitching pattern, or other,
similar securing patterns implemented with other fastening means,
the gore is allowed to open-up when side panels 22 and 24 are
pulled apart, for example, when a foot is inserted into the opening
40. Accordingly, the opening 40 enlarges.
[0040] In the embodiments shown, the cover panel is not secured to
the portion of the upper 20 around the gore 54 and/or the elastic
panel 56. Thus, even with the cover panel 52 disposed over the
elastic panel 56, the elastic panel may be stretched, and the
panels 22 and 24 may be pulled in the direction of the arrows as
shown, without the cover panel 20 inhibiting or restricting the
stretch or movement.
[0041] The cover panel 53 may be constructed from the same
materials as the upper, or other materials as desired.
Additionally, as shown in FIGS. 5 and 6, the cover panel optionally
is contoured to hug the heel of a wearer to increase comfort and to
further secure the shoe to the foot of the wearer.
[0042] Optionally, webbing 44 may be secured to the cover panel or
other portion of the upper 20 as desired to provide a grasping loop
so the user may pull the shoe over their heel.
[0043] III. Manufacture and Assembly
[0044] The manufacture and assembly of the footwear 10 will now be
described. Generally, the footwear is manufactured using the steps
of (a) providing an upper that defines an opening and includes a
gore defined in a heel portion of the upper, (b) securing a
flexible and resilient material to the upper within the gore, and
(c) joining the upper with an outsole. Optionally, a heel flap is
disposed over the elastic material to conceal all or part of the
material without restricting or preventing the material from
stretching so that the opening enlarges when a foot is inserted
through the opening.
[0045] More specifically, the desired upper material is cut to form
the various elements of the upper, including the vamp 23, the side
panels 22 and 24. In the heel portion, the upper is cut to define a
gore 56, which is bounded by edge 55. The elements of the upper are
then fitted and sewn together. In the heel portion 26, the ends of
the side panels 22 and 24 are sewn together along seam 23 with
stitching 25. The ends of the panels in the upper portion of the
depth D remain free to define the gore 54. A lining (not shown) may
be sewn within the upper during the fitting step.
[0046] In another step, the panel 56 is secured to the edge 55 of
the gore. As shown in FIG. 3, the panel 56 is secured to the edge
55 with stitching 57. Specifically, the panel is sewn to the free
ends of the side panels 22 and 24. Where the panel is secured to
only portions of the edge, the stitching is disposed only in those
respective portions. Where the gore is optionally defined by a one
heel panel (not shown), rather than multiple side panels, the
elastic panel is sewn directly to the heel panel.
[0047] The cover panel shown in FIGS. 1 and 3 is secured in place
in another step. Specifically, the cover panel is positioned over
the gore 54 and elastic panel 56 so that a portion of the panel
folds down against the interior of the upper 20 and another portion
folds down against the exterior of the upper 20. The cover panel is
secured to the interior and/or exterior of the upper with
conventional fastening means. In one embodiment, the cover panel is
secured to the upper in an area below the gore 54 to form a rigid
heel panel in the area. Optionally, a grasping loop 44 is secured
to the cover panel 52.
[0048] In yet another step, the outsole 30, which is manufactured
using conventional techniques and apparatus, is secured to the
outsole. For example, in one embodiment, the outsole and upper are
stitched to one another. In another embodiment, the upper is
secured to a midsole and the outsole is molded to the upper and
midsole. In yet another embodiment, the upper is secured to an
outsole shell (not shown) and a footbed (not shown) is positioned
in the outsole shell.
[0049] Finally, a number of conventional finishing operations are
performed on the shoe 10. For example, the edges of the outsole 30
are trimmed and shaped and the upper is cleaned and treated as
necessary.
[0050] The above descriptions are those of the preferred
embodiments of the invention. Various alterations and changes can
be made without departing from the spirit and broader aspects of
the invention as defined in the appended claims, which are to be
interpreted in accordance with the principles of patent law
including the doctrine of equivalents. Any references to claim
elements in the singular, for example, using the articles "a,"
"an," "the," or "the," is not to be construed as limiting the
element to the singular.
* * * * *