U.S. patent application number 14/089335 was filed with the patent office on 2014-06-05 for impact resistant running shoe insert.
The applicant listed for this patent is Scot K LARSEN. Invention is credited to Scot K LARSEN.
Application Number | 20140150291 14/089335 |
Document ID | / |
Family ID | 50824018 |
Filed Date | 2014-06-05 |
United States Patent
Application |
20140150291 |
Kind Code |
A1 |
LARSEN; Scot K |
June 5, 2014 |
Impact Resistant Running Shoe Insert
Abstract
An impact resistant running shoe insert provides impact
resistance for minimalist and non-minimalist running or hiking
shoes. Three flat layers are superimposed on each other. A hard
layer provides impact resistance, a soft layer atop of the hard
layer provides comfort and friction between the insert and a user's
foot, and a third layer below the hard layer minimizes slippage
between the insert and the user's shoe. A full length insert may be
used in a single toe box shoe, and a partial length insert is
provided for use with multiple toe box shoes. The partial length
insert has a tapered edge between the forefoot area and the toe
area in order to minimize discomfort.
Inventors: |
LARSEN; Scot K; (Tustin,
CA) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
LARSEN; Scot K |
Tustin |
CA |
US |
|
|
Family ID: |
50824018 |
Appl. No.: |
14/089335 |
Filed: |
November 25, 2013 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
61732099 |
Nov 30, 2012 |
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Current U.S.
Class: |
36/44 |
Current CPC
Class: |
A43B 7/32 20130101; A43B
17/006 20130101; A43B 5/00 20130101 |
Class at
Publication: |
36/44 |
International
Class: |
A43B 13/40 20060101
A43B013/40; A43B 13/38 20060101 A43B013/38 |
Claims
1. An impact resistant running shoe insert comprises: a plurality
of flat layers with an insole shaped perimeter; the plurality of
flat layers comprises a soft layer and a hard layer; and the soft
layer and the hard layer being connected parallel to each
other.
2. The impact resistant running shoe insert as claimed in claim 1,
wherein the insole shaped perimeter resembles the plantar surface
of a foot without any toes.
3. The impact resistant running shoe insert as claimed in claim 1
comprises: each of the plurality of flat layers comprises a
forefoot portion and a heel portion; and the forefoot portion and
the heel portion being positioned adjacent to each other.
4. The impact resistant running shoe insert as claimed in claim 1
comprises: each of the plurality of flat layers being formed into a
full length foot shape, wherein the full length foot shape extends
into a toe area of a single toe box footwear.
5. The impact resistant running shoe insert as claimed in claim 1
comprises: each of the plurality of flat layers being formed into a
partial length foot shape, wherein a forefoot portion of the
partial length foot shape terminates between a forefoot area and a
toe area of a multiple toe box footwear.
6. The impact resistant running shoe insert as claimed in claim 5
comprises: the forefoot portion comprises a tapered edge; and the
tapered edge being positioned adjacent to the toe area and opposite
a heel portion of the foot shape.
7. The impact resistant running shoe insert as claimed in claim 1,
wherein the soft layer is made of a soft foam-like material.
8. The impact resistant running shoe insert as claimed in claim 1,
wherein the hard layer is made of an impact resistant material.
9. The impact resistant running shoe insert as claimed in claim 1
comprises: the soft layer being connected superjacent to the hard
layer, wherein the soft layer contacts a user's foot while in
use.
10. The impact resistant running shoe insert as claimed in claim 1,
wherein the plurality of flat layers comprises a third layer.
11. The impact resistant running shoe insert as claimed in claim
10, wherein the third layer is made of a high friction
material.
12. The impact resistant running shoe insert as claimed in claim
10, wherein the third layer is connected superjacent to the hard
layer opposite the soft layer.
13. The impact resistant running shoe insert as claimed in claim 1,
wherein one of the plurality of flat layers is coated with an
anti-microbial rubberized coating.
14. An impact resistant running shoe insert comprises: a plurality
of flat layers with an insole shaped perimeter; the plurality of
flat layers comprises a soft layer and a hard layer; the soft layer
and the hard layer being connected parallel to each other; and the
soft layer being connected superjacent to the hard layer, wherein
the soft layer contacts a user's foot while in use.
15. The impact resistant running shoe insert as claimed in claim
14, wherein the insole shaped perimeter resembles the plantar
surface of a foot without any toes.
16. The impact resistant running shoe insert as claimed in claim 14
comprises: each of the plurality of flat layers comprises a
forefoot portion and a heel portion; and the forefoot portion and
the heel portion being positioned adjacent to each other.
17. The impact resistant running shoe insert as claimed in claim 14
comprises: each of the plurality of flat layers being formed into a
full length foot shape, wherein the full length foot shape extends
into a toe area of a single toe box footwear.
18. The impact resistant running shoe insert as claimed in claim 14
comprises: each of the plurality of flat layers being formed into a
partial length foot shape, wherein a forefoot portion of the
partial length foot shape terminates between a forefoot area and a
toe area of a multiple toe box footwear; the forefoot portion
comprises a tapered edge; and the tapered edge being positioned
adjacent to the toe area and opposite a heel portion of the foot
shape.
19. The impact resistant running shoe insert as claimed in claim 14
comprises: the soft layer being made of a soft foam-like material;
and the hard layer being made of an impact resistant material.
20. The impact resistant running shoe insert as claimed in claim 14
comprises: a third layer from the plurality of flat layers; the
third layer being made of a high friction material; and the third
layer being connected superjacent to the hard layer opposite the
soft layer.
Description
[0001] The current application claims a priority to the U.S.
Provisional Patent application Ser. No. 61/732,099 filed on Nov.
30, 2012.
FIELD OF THE INVENTION
[0002] The present invention relates generally to a shoe insert,
more specifically to a shoe insert designed specifically for use in
running or hiking shoes in order to protect a user's foot from
injury as a user traverses over sharp rocks, pointed surface
irregularities, and a plurality of other surface hazards.
BACKGROUND OF THE INVENTION
[0003] The popularity of barefoot and minimalist shoe running,
walking, and hiking has created a number of new footwear products
on the market. Most of these shoes are designed to provide zero
heel drop and minimal or no cushioning to provide a near "barefoot"
experience. The advantages of barefoot style footwear are numerous.
The disadvantage of barefoot style footwear is they provide only
minimal impact resistance from sharp rocks and debris. Most
minimalist shoes do not provide a traditional "rock plate" that
many hiking boots and traditional trail running shoes do
provide.
[0004] It is therefore the object of the present invention to
provide a protection method that can be retrofitted into existing
minimalistic or non-minimalistic running and hiking shoes. The
present invention provides impact resistance while running or
walking while maintaining the dynamics provided by minimalistic or
non-minimalistic running shoes. To accomplish this the present
invention comprises a removable and stackable shoe insert that does
not provide significant cushioning from normal foot-to-ground
impact but instead provides protection to specific impact points
like the ball and heel of the user's foot. Different styles of the
insert support shoes with multiple toe boxes or a standard single
toe box. Since the insert for shoes with multiple toe boxes does
not extend to the end of the toes, but rather ends at the ball of
the foot, the insert provides a "tapered" end to minimize the drop
off at the end of the insert. The taper reduces the chance of the
insert generating "hot spots" or blisters on the foot at the point
where the insert ends.
[0005] The insert is able to protect the user's foot from sharp
debris such as rocks, glass, nails, and other debris. Finally, the
present invention is designed allow the user to scale the level of
protection from road and trail debris by "stacking" additional
inserts. Each double insert provides additional impact resistance
by creating a "sandwich" of ballistic plastic with 2 layers of
rubberized material in the center.
BRIEF DESCRIPTION OF THE DRAWINGS
[0006] FIG. 1 is a perspective view of the insert.
[0007] FIG. 2 is a top view of the insert.
[0008] FIG. 3 is a top view of the full length insert for single
toe box footwear.
[0009] FIG. 4 is a top view of the partial length insert for multi
toe box footwear.
[0010] FIG. 5 is a perspective view of the insert with a detail
view showing the tapered edge of the partial length insert.
DETAIL DESCRIPTIONS OF THE INVENTION
[0011] All illustrations of the drawings are for the purpose of
describing selected versions of the present invention and are not
intended to limit the scope of the present invention. The present
invention is to be described in detail and is provided in a manner
that establishes a thorough understanding of the present invention.
There may be aspects of the present invention that may be practiced
without the implementation of some features as they are described.
It should be understood that some details have not been described
in detail in order to not unnecessarily obscure focus of the
invention.
[0012] The present invention is a stackable impact resistant shoe
insert designed for minimalistic and non-minimalistic running and
hiking shoes. The present invention is particularly useful for
minimalistic shoes, such as multi-toed shoes which tend to be
thinner and have less cushioning or other protection in comparison
to other types of shoes. In addition, separate versions of the
present invention, alternatively referred to hereinafter as the
insert, are designed to accommodate shoes with a single toe box as
well as shoes that have separate toe box compartments. The present
invention is superimposed on top of the innersole of a user's
minimalistic running shoe. The insert is able to protect a user's
foot from injury as the user traverses over sharp rocks, roots,
pointed surface irregularities, and other ground surface hazards
which would otherwise cause pain or discomfort to the user's
feet.
[0013] Referring to FIGS. 1-2, the present invention generally
comprises a plurality of flat layers 1 with an insole shaped
perimeter 11. In the preferred embodiment of the present invention,
the plurality of flat layers 1 comprises a soft layer 12, a hard
layer 13, and a third layer 14 which are superimposed onto each
other. In an alternate embodiment, the third layer 14 is not
included. The insole shaped perimeter 11, and thereby the present
invention, resembles the plantar or bottom surface of a foot
without any toes.
[0014] The soft layer 12 is made of a soft, foam-like material. The
soft layer 12 is provided as a soft, flexible foam-like coating
with high elasticity providing a comfortable surface for the bottom
contact points of a user's foot. The soft layer 12 should also have
a high friction coefficient in order to reduce movement between the
insert and the user's foot. The soft layer 12 is preferably
provided with a thickness of no more than 1 millimeter.
[0015] The hard layer 13 is made of an impact resistant material
such as, but not limited, hard ballistic plastic in order to
protect the user's foot from injury. In the preferred embodiment,
the hard layer 13 is made from a plastic composite derived from
polyethylene, or alternatively polypropylene. The material of the
hard layer 13 should be flexible but not very elastic. The hard
layer 13 serves as the protective element in the preferred
embodiment of the present invention. The hard layer 13 is
preferably provided with a thickness of no more than 1 millimeter.
Embodiments should be anticipated in which the hard layer 13 is
embedded or coated with a rubberized layer.
[0016] The third layer 14 is made preferably made of a hard, high
friction material that is skid resistant so that the insert does
not slip against the sole of a shoe while in use. The third layer
14 is preferably made of a material derived from or similar to
neoprene, and is similar in composition to the rubber used in
wetsuits and provides a high friction coefficient to help prevent
the inset from sliding within the user's show.
[0017] Additionally, in one embodiment of the present invention, at
least one of the plurality of flat layers 1 is coated with an
anti-microbial rubberized coating 2. The soft layer 12 may be
coated with the anti-microbial rubberized coating 2, or the third
layer 14 may be coated with the anti-microbial rubberized coating
2, or both the soft layer 12 and the third layer 14 may be coated
with the anti-microbial rubberized coating 2.
[0018] The soft layer 12 and the hard layer 13 are connected
parallel and superjacent to each other, wherein the soft layer 12
contacts the user's foot while in use. Similarly, the third layer
14 is connected superjacent to the hard layer 13 opposite the soft
layer 12, wherein the third layer 14 contacts the insole of the
user's footwear while in use.
[0019] Each of the plurality of flat layers 1 comprises a forefoot
portion 15 and a heel portion 16, which are positioned adjacent to
each other. In a first embodiment of the present invention shown in
FIG. 3, the plurality of flat layers 1 is formed into a full length
foot shape 3, wherein the full length foot shape 3 extends from the
heel of the user's foot into the end of a toe area 6 of a single
toe box footwear.
[0020] In a second embodiment of the present invention, each of the
plurality of flat layers 1 is formed into a partial length foot
shape 4 as shown in FIG. 4, wherein the forefoot portion 15 of the
partial length foot shape 4 terminates between the forefoot area 5
and a toe area 6 of a multiple toe box footwear. In the second
embodiment, the forefoot portion 15 comprises a tapered edge 7
which is positioned adjacent to the toe area 6 and opposite the
heel portion 16 of the foot shape, as shown in FIGS. 4-5. The
purpose of the tapered edge 7 is to prevent or reduce discomfort
for the user's foot, as having a sharp drop off can cause blisters
and discomfort.
[0021] In the preferred embodiment of the present invention, at
least one insert is positioned into minimalist or non-minimalist
running shoes. Each insert is provided in a manner that permits a
user to superimpose an insert onto another insert within a user's
running shoe. The user is able to stack the inserts to provide
additional protection in various running circumstances. Each insert
is positioned in a manner which aligns the forefoot portion 15 and
heel portion 16 of one insert with the forefoot portion 15 and heel
portion 16 of another insert, respectively. When superimposed on
themselves, the inserts provide a user with as much as three times
the effective level of protection compared to a single insert,
while only doubling the thickness of the inserts.
[0022] In the preferred embodiment of the present invention, each
individual insert provides a single layer of ballistic impact
resistant plastic coated on the bottom with a slip-resistant rubber
layer and coated on the top with a soft, foam like rubber layer.
Additional embodiments of the insert could provide multiple layers
of ballistic impact resistant plastic interleaved with thin
flexible rubber to provide additional impact protection.
[0023] In the preferred embodiment of the present invention the
stackable inserts are provided in a manner that superimposes an
insert on top of another insert. Each double insert provides
additional impact resistance by creating a "sandwich" of ballistic
plastic with two layers of rubberized material in the center. Since
each insert is less than 3 mm, as many inserts can be stacked as
are comfortable for the user.
[0024] In the preferred embodiment of the present invention the
inserts are provided in a manner that allows for facilitated
transport and storage when not installed in a minimalist running
shoe. In an additional embodiment of the present invention the
stackable insert can include a hinging section positioned between
the forefoot plate and the heel plate. The hinged section provides
the stackable insert to fold upon itself, improving current storage
and transport options.
[0025] The preferred embodiment of the present invention has a
bridge 8 between the forefoot portion 15 and the heel portion 16
with a width that is smaller than the width of both the forefoot
portion 15 and the heel portion 16. While this is the preferred
embodiment, additional embodiments could include varied positioning
of the bridge 8 while still permitting the present invention to be
easily transported, stored, and stacked, well as provide support
and protection for the forefoot portion 15 and the heel portion 16.
It should be noted that additional variations of the positioning of
the bridge 8 would be considered an obvious difference as long as
the positioning is provided to serve the same functionality.
[0026] In the preferred embodiment of the present invention the
ballistic impact resistant layer is constructed of a polyethylene
material. While the preferred embodiment uses a polyethylene
material, additional material compounds could be included.
Additionally, variations of material compounds not containing
polyethylene could potentially be used as long as the materials
provide the same functionality currently exhibited by the hard
layer 13.
[0027] In the preferred embodiment of the present invention, the
soft layer 12 is constructed from an open cell neoprene material
with a high elasticity coefficient. While the preferred embodiment
of the soft layer 12 is constructed of an open cell neoprene
material, additional embodiments can be constructed of various
materials that provide the same functionality and flexibility
available to the soft layer 12.
[0028] In the preferred embodiment of the present invention, the
third layer 14 is constructed from an elastic neoprene material
with a high friction coefficient. While the preferred embodiment of
the soft layer 12 is constructed of an elastic neoprene material,
additional embodiments can be constructed of various materials that
provide the same functionality and flexibility available to the
soft layer 12.
[0029] Although the invention has been explained in relation to its
preferred embodiment, it is to be understood that many other
possible modifications and variations can be made without departing
from the spirit and scope of the invention as hereinafter
claimed.
* * * * *