U.S. patent application number 14/994930 was filed with the patent office on 2017-03-02 for self-scalable footwear.
The applicant listed for this patent is Ana Carolina Grings. Invention is credited to Ana Carolina Grings.
Application Number | 20170055625 14/994930 |
Document ID | / |
Family ID | 55070956 |
Filed Date | 2017-03-02 |
United States Patent
Application |
20170055625 |
Kind Code |
A1 |
Grings; Ana Carolina |
March 2, 2017 |
SELF-SCALABLE FOOTWEAR
Abstract
The present invention relates to a self-scalable casual footwear
that allows involve two subsequent footwear sizes, comprising an
upper of bi-elastic material (1) and a mono-elastic (2), a
bi-material outsole (3) and a mounting insole (4). Such footwear
does not require additional components to fit, such as laces,
rubber bands, straps, velcro, zippers, hooks, eyelets or any other
that is treated as a resource for the purpose of this
invention.
Inventors: |
Grings; Ana Carolina; (Rio
Grande do Sul, BR) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Grings; Ana Carolina |
Rio Grande do Sul |
|
BR |
|
|
Family ID: |
55070956 |
Appl. No.: |
14/994930 |
Filed: |
January 13, 2016 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
A43B 3/26 20130101; A43B
13/141 20130101; A43B 13/122 20130101; A43B 23/0235 20130101; A43B
3/107 20130101; A43B 1/10 20130101; A43B 1/00 20130101; A43B 9/12
20130101; A43B 23/027 20130101; A43B 23/047 20130101; A43B 3/08
20130101 |
International
Class: |
A43B 3/26 20060101
A43B003/26; A43B 9/12 20060101 A43B009/12; A43B 3/10 20060101
A43B003/10; A43B 1/10 20060101 A43B001/10; A43B 1/00 20060101
A43B001/00 |
Foreign Application Data
Date |
Code |
Application Number |
Aug 31, 2015 |
BR |
10 2015 021106 6 |
Claims
1. Self-scalable footwear characterized in that it comprises a
bi-elastic material upper (1) and a mono-elastic (2), a bi-material
outsole in TR (3) and a mounting insole (4).
2. Self-adjusting footwear, according to claim 1, characterized in
that the bi-elastic material (1) of the upper is divided in three
layers (8 and 9).
3. Self-scalable footwear, according to claim 2, characterized in
that the first and third layers (8) are of synthetic knitted fabric
or synthetic laminates with bi-elastic property with a yarn
composition in the range of 83% to 97% of PES (polyester),
preferably 90% of PES, and 3% to 17% of PUR (elastomeric
polyurethane or elastane), preferably 10% of PUR.
4. Self-scalable footwear, according to claim 3, characterized in
that the composition of the yarns is of synthetic or natural origin
associated with a PUR yarn.
5. Self-scalable footwear, according to claim 3, characterized in
that synthetic laminates are optionally used with a bi-elastic
property in replacing the knitted fabric.
6. Self-scalable footwear, according to claim 2, characterized in
that the layers (8 and 9) are joined with an adhesive film with
thermo-sticky PU, or alternatively with adhesives in liquid or
semi-solid/paste state.
7. Self-scalable footwear, according to claim 2, characterized in
that the second layer (9) is composed of a latex foam material with
SBR (styrene butadiene rubber) with a thickness of 1.3 to 5 mm,
preferably 2 mm, and specific gravity between 140 kg/m.sup.3 and
350 kg/m.sup.3, preferably 270 kg/m.sup.3.
8. Self-scalable footwear, according to claim 1, characterized in
that the mono-elastic material (2) of the upper is composed of a
fabric of PES (polyester) base and a coating of PU
(polyurethane).
9. Self-scalable footwear, according to claim 8, characterized in
that the mono-elastic material (2) is set in the bi-elastic
material (1) by an adhesive film with thermo-sticky PU resin and
seams around the edges.
10. Self-scalable footwear, according to claim 9, characterized in
that the mono-elastic material (2) limits the excessive elongation
of the footwear in the heel region, toecap (front of the footwear)
and in portions of the sides.
11. Self-scalable footwear, according to claim 1, characterized in
that the mounting insole (4) is developed with a web of 100% of
PES, a resin non-woven fabric with a grammage of between 140 and
500 g/m.sup.2 and with specific design.
12. Self-scalable footwear, according to claim 1, characterized in
that the bi-material outsole (3) forms two layers (6 and 7).
13. Self-scalable footwear, according to claim 12, characterized in
that the layer (7) is soft and elastic with a hardness between 20
and 25 Shore A, preferably of 22 Shore A, and thickness between 0.9
and 2.0 mm, preferably of 1.5 mm in the sole of the foot region,
and a thickness between 8 and 11 mm, preferably of 9 mm in the heel
region.
14. Self-scalable footwear, according to claim 12, characterized in
that the layer (6) is soft and resistant to wear (abrasion) with a
hardness between 70 and 80 Shore A, preferably of 80 Shore A.
Description
FIELD OF THE INVENTION
[0001] The present invention belongs to the field of footwear
engineering, and describes a self-scalable casual footwear that
allows involve two subsequent footwear sizes, both on foot length
and several widths/perimeters and heights that the same foot length
can hold without the need for additional components for adjustment,
such as laces, rubber bands, straps, velcro, zippers, hooks,
eyelets or any other that is treated as a resource for the purpose
of this invention.
BACKGROUND OF THE INVENTION
[0002] The availability of footwear in the market is through not
self-scalable fixed numbering, requiring the user understands the
dimensions of their feet in order to buy a footwear such as length
and width measures. Therefore, in a global scale, some markets have
besides length the choice of the width that can vary between three
or more measurements, thus generating an increase in both volume
and in logistics and storage of these products in stores,
consequently requiring larger storage area. In other markets there
is available only the choice of the size (length of the footwear)
with a standard width determined by each manufacturer, so limiting
the consumer choice. This way, the proposed footwear aims at
overcoming this limitation by providing its users with increased
comfort due to its flexibility.
STATE OF THE ART
[0003] There have been presented several solutions/adaptations of
footwear in order to allow the use of two subsequent footwear
sizes, but none that met so broadly such needs as in the present
invention. For example:
[0004] The document CN20237514U differs from the present invention
because only the requisite of width of the footwear is met, the
outsole being static in relation to the length. The present
invention meets both the width and length needs in all of its
component parts and is intended for adult female public.
[0005] The document ES1061431 is not in conflict with the present
invention, because it is a product for the children's segment, as
the outsole allows only adjustment in length, the width getting
adjustable by a velcro system. Differently, the present invention
meets both the width and length needs in all its component
parts.
[0006] The document FR1562221A is not in conflict with the present
invention, because the adjustment takes place only in the length of
the foot and in the heel region.
[0007] The document GB913182A is different from the present
invention, since it refers only to elasticity on the footwear
length.
[0008] The document U.S. Pat. No. 8,935,861B2 is not in conflict
with the present invention, as the outsole does not include
lengthening the width of the foot.
[0009] The document U.S. Pat. No. 8,938,890B2 differs from the
present invention, since the described outsole has a manual
adjustment in the length of the footwear and does not include a
width sizing. The upper restricts the lengthening on the instep
(midfoot), limiting the area, offering lengthening only in the
hindfoot and forefoot region.
BRIEF DESCRIPTION OF THE INVENTION
[0010] The present invention has the objective of providing the use
of a footwear which allows to involve two subsequent footwear
sizes, since, at the same time as different people with the same
length of feet may have different widths/perimeters, either in the
regions of the hindfoot, midfoot and forefoot, the individual
himself/herself does not have symmetry of the members in
question.
[0011] By associating elastic materials with techniques in the
production process and based on numbering anthropometric scale of
French point used in Brazil, that determines the difference in size
of each spacing each 6.66 millimeters for female footwear, it is
assigned the size of a footwear multiplied by 6.66 millimeters,
and, for example, size 35 corresponds to the length of 233.1
millimeters, considering this the actual measurement of the foot
length.
BRIEF DESCRIPTION OF DRAWINGS
[0012] FIG. 1 shows a perspective view of the footwear described in
the present invention;
[0013] FIG. 2 shows the mounting insole, showing the narrower areas
(5) as described in the present invention;
[0014] FIG. 3 shows the outsole as described in the present
invention;
[0015] FIG. 4 shows the bi-elastic material of upper, highlighting
the three layers that comprise it: the first and third layer (8) of
synthetic knitted fabric and the second layer (9) of latex foam
material with SBR; and
[0016] FIG. 5 shows a side sectional view of the outsole
highlighting the two layers (6 and 7) that compose it.
DETAILED DESCRIPTION OF THE INVENTION
[0017] The present invention relates to a casual footwear that
allows involve two subsequent footwear sizes, comprising an upper
of bi-elastic material (1) and a mono-elastic (2), an outsole of
bi-material (3) and a mounting insole (4).
[0018] The upper, the top part of the footwear, is manufactured
with a hi-elastic material (1) and a mono-elastic material (2). The
first ensures a lengthening in the vertical and horizontal
direction (length and width of feet), and is composed of materials
having an elastic property and divided into three layers: the first
and third (8) layers of synthetic knitted fabric with a yarn
composition in the range of 83% to 97% of PES (polyester), and is
more suitable the composition of 90% PBS and 10% of PUR. The
composition of the fabric yarns may be of synthetic or natural
origin associated with a PUR yarn in the process of manufacturing
the knitting for interlacing the yarns, thereby securing its
elasticity. There also can be used synthetic laminates with a
bi-elastic property to replace the knitted fabric. The second layer
(9) is composed of latex foam material with SBR (styrene butadiene
rubber) with 1.3 to 5 mm of thickness and specific gravity of 140
kg/m.sup.3 and 350 kg/m.sup.3, the most suitable thickness and
specific gravity being 2 mm and 270 kg/m.sup.3.
[0019] The union between the layers is accomplished with an
adhesive film of thermo-sticky PU, but other adhesives alternatives
may also be applied in the liquid state (when the adhesive is
applied at ambient temperature without the need for heat usage to
reactivate its properties) or in the semi-solid/paste state (hot
melting, when it is necessary to liquefy it with a high temperature
to activate its stickiness properties).
[0020] The mono-elastic material (2) has only lengthening in its
width, and is composed of a base of PES (polyester) fabric and a PU
(polyurethane) coating, and is considered a "laminate fabric" or
"synthetic laminate". It is set in the bi-elastic material (1) by
an adhesive film with thermo-sticky PU resin and seams around the
edges, it is arranged in three parts (pieces) that limit the
excessive lengthening of the footwear in the heel area, toecap
(front of the footwear) and parts of the sides. In areas where it
is not fixed, it allows the bi-elastic material (1) to hold the
property of the lengthening, allowing the footwear to fit the size
and width of the foot without causing an excessive pressure
(tighten the foot) or a play (the footwear drops out of the foot),
allowing for a safe walking.
[0021] The mounting insole (4) is developed with a web of 100% of
PES, a resin non-woven fabric with a grammage of between 140 and
500 g/m.sup.2 and with specific design, so that, during the
manufacturing process of positioning the upper in the mold, allows
the length accuracy and not leaving the footwear loose or warped,
and when gluing/setting the outsole, the narrower areas (5) are cut
and removed to allow the lengthening of the footwear not to be
compromised.
[0022] The bi-material outsole (3) of TR (thermoplastic) forms two
layers, the first (7) being soft and elastic with a hardness
between 20 and 25 Shore A, preferably of 22 Shore A and a thickness
between 0.9 and 2.0 mm, preferably of 1.5 mm, in the sole of the
foot region (forefoot and midfoot) enabling the lengthening safely,
since when reducing the thickness, a low resistance to lengthening
occurs and otherwise make rigid the material for lengthening, and a
thickness between 8 and 11 mm, preferably of 9 mm, in the heel
region (hindfoot), guaranteeing the quality to absorb the impact
when walking, without deformation or excessive rigidity.
[0023] The second layer (6), which is in contact with the ground,
is soft and resistant to wear (abrasion) with a hardness between 70
and 80 Shore A, preferably of 80 Shore A. The wavy design on its
surface enables a greater adherence and ensures the safety when
walking, and its application is divided distinctly in the three
regions of the foot, more statically covering the entire area of
the hindfoot, without significant sizing, in the midfoot/forefoot
divided into fifteen insulated parts and with distinct shapes
enabling the outsole lengthening in the width and length of the
foot and in the forefoot statically occupying part of the
toecap/tip of the footwear without significant sizing.
[0024] While the invention has been described widely, it is obvious
to those skilled in the art that various changes and modifications
may be made seeking design improvements without said changes are
not covered by the scope of the invention.
* * * * *