FOOT SUPPORT ARTICLE
An article of footwear includes an outer shell, an inner layer positioned inside of the outer shell, and at least one tensioning member engaging the inner layer. The inner layer configured to surround and conform to at least a portion of a human foot. The at least one tensioning member includes a portion that extends to the outside of the outer shell, wherein the portion that extends to the position that is outside of the outer shell is configured to enable tightening and loosening of the at least one tensioning member.
Latest UNDER ARMOUR, INC. Patents:
The present application claims priority from U.S. Provisional Application No. 61/357,075 filed on Jun. 21, 2010, the contents of which are incorporated herein by reference in their entirety.
TECHNICAL FIELDThe present disclosure relates generally to articles of footwear, and, more particularly, to articles of footwear having foot support members.
BACKGROUNDAnkle stability is a key and critical need from athletes and users who deal with lateral motion. There exists a need to provide a simple and lightweight cleat or shoe for athletes in order to offer better support for the foot and ankle region of a user wearing the cleat. Athletes and users take a tremendous amount of time and effort to tape and spat their feet, as well as add additional ankle and foot support braces. The ankle support systems add weight to a footwear system in which lightness is highly desired.
Injuries to the ankle are estimated to account for 15-20% of all musculoskeletal injuries, with approximately 85% being ankle sprains. The most common mechanism of injury is excessive Inversion, coupled with Plantar Flexion—approximately 75-80% involve the lateral ligament complex, primarily the Anterior Talofibular Ligament.
Typically, ankle sprains occur in 40-100 ms. Compared to average muscle latencies: reported latency of 69-85 ms, with approximately 90-110 ms to reach half max force, and an average of 250 ms to reach peak torque generation, the body is not able to adequately respond to an unexpected inversion. In comparison, during running, the stance phase lasts 200-250 ms, and the calf muscles are activated approximately 150 ms prior to heel impact, allowing the ankle adequate time to stabilize.
Players with a history of ankle sprains are 2-3 times more likely to have a recurrent injury than players without history of ankle injuries. Use of bracing or taping, as well as proprioceptive training have been shown to reduce the level of recurrence to the levels of players without history of injury.
In general, both bracing (lace-up and semi-rigid) and taping have been shown to reduce both the frequency and severity of ankle sprains during athletic activities. Semi-rigid braces tend to have a more positive effect for individuals with a history of ankle sprains than for athletes without history. Such lacing and taping methods currently used are time consuming and a waste of resources. Upon the completion of use, the user cuts off and discards the taping. This process increases the time and cost of providing support for the foot and ankle during athletic activities. Thus, improvements to support members that brace the foot and ankle of a person wearing the bracing are beneficial.
SUMMARYIn at least one embodiment, an article of footwear includes an outer shell, an inner layer positioned inside of the outer shell, and at least one tensioning member engaging the inner layer. The inner layer is configured to surround and conform to at least a portion of a human foot. The at least one tensioning member includes a portion that extends to a position that is outside of the outer shell, wherein the portion that extends to the position that is outside of the outer shell is configured to enable tightening and loosening of the at least one tensioning member.
In at least one other embodiment, an article of footwear includes a sole, an upper connected to the sole, the upper and the sole defining a foot cavity, a tensioning member positioned within the foot cavity, and a tension adjustment member positioned outside of the upper. The tensioning member is configured to apply a compressive force to a foot positioned within the foot cavity. The tension adjustment member is configured to adjust the compressive force applied to the foot positioned within the foot cavity.
In at least one embodiment, a method of applying compression to a foot includes inserting the foot into a shoe having an outer shell, touching a portion of a tension adjustment member positioned outside of the outer shell, and moving the tension adjustment member in order to bring a tensioning member into closer engagement with the foot and provide compression to the foot. The tension adjustment member is coupled to the tensioning member that is positioned at least partially within the shoe.
The above described features and advantages, as well as others, will become more readily apparent to those of ordinary skill in the art by reference to the following detailed description and accompanying drawings. While it would be desirable to provide an apparatus that provides one or more of these or other advantageous features as may be apparent to those reviewing this disclosure, the teachings disclosed herein extend to those embodiments which fall within the scope of any appended claims, regardless of whether they include or accomplish one or more of the advantages or features mentioned herein.
For a general understanding of the details for the footwear disclosed herein, the drawings are referenced throughout this document. In the drawings, like reference numerals designate like elements. As used herein the term “foot” may refer to a portion of the human foot, a full human foot, and to the ankle. Various portions of the foot include, but are not limited to, the forefoot, midfoot, upper foot, heel, and ankle. The terms “medial” and “medial side” refer to the inner side of a foot extending from the large toe to the heel, and the terms “lateral” and “lateral side” refer to the outer side of the foot extending from the small toe to the heel. The term “user” may refer to a person wearing an article of footwear or another person such as an athletic trainer. The user may adjust the article of footwear to apply compression and support to the foot as described herein.
Article of Footwear with Tensioning Members
FIG. 1A,-
The inner layer 12 may be comprised of any material that provides the user with comfort and functionality. Such materials include, but are not limited to, compression fabrics, polypropylenes, webbing, neoprene, elastane, synthetics, and the like. The inner layer 12 may be formed as a flexible boot or sock that conforms to the foot and ankle. The inner layer 12 accommodates the foot 14 and is configured to fit snugly about the foot and ankle 14. As seen in
The outer shell 13 may be formed from one or more flexible materials that enclose some or all of the inner layer 12. Such materials include, but are not limited to, natural and synthetic leather, fabrics including nylon and canvas, rubber, and plastics. The outer shell 13 includes a lower portion or sole 15 that is attached to an upper portion 25, referred to as an “upper” that is attached to the sole 15. The sole 15 and upper 25 form a volume that is referred as a “foot cavity”. The foot cavity accommodates the foot of a person wearing the cleat 10. The foot cavity also holds the inner layer 12 and portions of the tensioning members 16. In various alternative embodiments described below, different support members and stabilizing members are also positioned inside the foot cavity. The inner layer 12 may be permanently attached to the outer shell 13 of the cleat 10, or alternatives the outer shell 13 may be selectively removable from the inner layer 12 to aid in fitting the cleat 10 to the foot.
As shown in
The exemplary embodiment of cleat 10 includes two sets of crisscrossing forefoot tensioning members 16A and 16B. As illustrated in
As best shown in
As illustrated in
As illustrated in
With particular reference to
In operation, the user first inserts a foot 14 inside the inner layer 12 positioned in the foot cavity formed inside the sole 15 and upper 25. The foot 14 slides into the inner layer 12 and seats the heel of the foot into the heel portion 60. When inserting the foot 14, tabs 18A-18B, 22A-22B, 32A-32B and the pull tabs 52A-52B are disengaged from counterpart fastening locations. The user may then apply a compressive force to the foot 14 using one or more of the tensioning members 16 on the cleat 10. In one embodiment, the user pulls forefoot tabs 18A and 18B away from each other to apply a tensile force that tightens the forefoot tensioning members 16A and 16B. The user engages the forefoot tab 18A-18B with the forefoot of the cleat 10 thus maintaining and locking in the applied tension on the forefoot tensioning members 16A-16B. The user pulls midfoot tabs 22A and 22B away from each other to applying a tensile force that tightens the midfoot tensioning members 20A and 20B. The user then engages the midfoot tabs 22A and 22B with the midfoot of the cleat 10 thus maintaining and locking in the applied tension on the midfoot tensioning members 20A and 20B. The user pulls upper foot tabs 32A and 32B away from each other to apply a tensile force that tightens the upper foot tensioning members 30A and 30B. The user then engages the upper foot tabs 32A and 32B with the upper foot of the cleat 10 thus maintaining and locking in the applied tension on the upper foot tensioning members 30A and 30B. The forefoot tensioning members 16A-16B, midfoot tensioning members 20A-20B, and the upper foot tensioning members 30A-30B may be tightened in any order.
Once tension has been applied to the tensioning members 16A-16B, 20A-20B, and 30A-30B, the user uses pull tabs 52 to pull and apply a tensile force to the tensioning straps 50. The user pulls the pull tabs 52 to apply a selected tensile force to the tensioning straps 50A and 50B, and engages pull tabs 52A and 52B with the upper foot tabs 32A and 32B, respectively, to secure the tensioning straps 50A and 50B in the selected position. The result of the aforementioned tensioning enables the user to fully lock the cleat 10 about the foot and ankle region. In an alternative embodiment, the tensioning straps 50A and 50B may have fastening material such as hook and loop material positioned on both sides of the tensioning straps 50A and 50B. In this embodiment, the user pulls on tensioning straps 50A and 50B to apply compression to the foot 14 prior to adjusting the upper foot tabs 32A and 32B.
When one of the tensioning members 16A-16B, 20A-20B, 30A-30B, and 50A-50B inside of the outer shell 13 is tightened, the effective length of the tightened tensioning member inside of the outer shell 13 decreases, and the effective length of the portion of the tensioning member that extends through the outer shell 13 increases. The term “effective length” refers to the proportion of the length of one or more of the tensioning members 16 that is either inside of or outside of the outer shell 13. As the effective length of one of the tensioning members 16 increases inside the outer shell 13, the corresponding effective length decreases outside of the outer shell 13, and vice versa. Each of the tensioning members 16A-16B, 20A-20B, 30A-30B, and 50A-50B may be loosened as well as tightened. Each tensioning member may be loosened when a corresponding tension adjustment member 18 for a tensioning member 16 is detached from a corresponding attachment location of the cleat 10. The user may loosen the tensioning member and then engage the tab with a corresponding attachment location to maintain the applied tension. When one of the tensioning members 16A-16B, 20A-20B, 30A-30B, and 50A-50B is loosened, the effective length of the loosened tensioning member inside of the outer shell 13 increases, and the effective length of the portion of the tensioning member that extends through the outer shell 13 decreases.
Article of Footwear with Support Members
With reference to
Footwear article 900 includes vertical supports 100 and horizontal supports 102 shown in
As shown in
Article of Footwear with Tensioning Member Channels Positioned Over Support Members
Article of Footwear with Adjustable Stabilizing Members
In another alternative footwear embodiment, one or more adjustable stabilizing members are positioned within the footwear to provide additional stability to one or more portions of a foot that is inserted in the footwear.
The tensioning member 1208 includes one end 1232 that is attached to the inner layer 1212 under the sole of the foot. The length of the tensioning member 1208 may be fixedly attached or threaded through the ends 1207A and 1207B of the stabilizing member 1204. A second end of the tensioning member 1236 may end in a tension adjustment member, such as a tab or other attachment device that is configured to engage a fastening pad or other fastening mechanism positioned on the outside of the footwear in a similar manner to the embodiments of
As seen in
In a finished article of footwear, an outer shell, omitted in
In operation, a user inserts the foot inside the inner layer 1212 located in the foot cavity to enable the heel 1260 to engage the stabilizing member 1204 and the ankle to engage the stabilizing members 1216A and 1216B. The user may first apply a selected tensioning force to the end of the tensioning member 1208 that extends outside of the footwear to draw the stabilizing member 1204 into further engagement with the heel 1260 to provide support to the heel 1260 when wearing the footwear. As described above, the tensioning member 1208 may be tightened or loosened to increase or decrease, respectively, the tightness of the stabilizing member 1204 with respect to the foot. The tensioning member 1208 is secured to an outer shell of the footwear in a similar manner to the embodiments of
After adjusting the tensioning member 1208 and associated heel stabilizing member 1204, the user may then adjust the tensioning members 1220A and 1220B that engage ankle stabilizing members 1216A and 1216B, respectively. To accomplish this, the user applies a selected tensioning force to the ends of tensioning members 1220A and 1220B that extend outside of the footwear and secures them to the outer shell to engage the stabilizing members 1216A and 1216B, respectively, to the ankle. The foregoing description does not limit the order of adjusting the tensioning members 1215 and stabilization members 1202. The user may adjust the tensioning members 1208, 1220A, and 1220B and corresponding stabilization members 1204, 1216A and 1216B in any order.
The stabilizing members 1204, 1216A, and 1216B provide additional support to the heel and ankle. The tensioning members 1215 enable a user to adjust the stabilizing members 1202 to conform to the foot and ankle while wearing the footwear. While the foregoing embodiments depict stabilizing members 1202 engaging the heel and ankle regions of the foot, alternative embodiments may have stabilizing members for one of the heel and ankle, and may include similar stabilizing members that engage other areas of the foot.
Article of Footwear with a Locking Strap
The cleat 90 also includes a toe guard 98. Toe guard 98 may comprise a material with an increased resistance to compression forces, such as those experiences when a large load is placed thereupon. Such materials exhibit a higher modulus of elasticity and include, but are not limited to, Kevlar fibers, plastics, and the like.
In operation, a user first inserts a foot into cleat 90, The user then pulls on an end of tensioning strap 92 that extends out of the outer shell 95 to apply a tensile force to the tensioning strap 92. Such application urges the heel of a foot inserted into the cleat 90 into the heel region 91 of the cleat 90. The heel region 91 may include an external support member 93 that engages with the posterior end of the heel. The end of the tensioning strap 92 is secured to the outer shell 95 of the cleat 90 using a hook and loop type of engagement (although other known methods may also be used). The user then wraps locking strap 96 around the ankle region of the foot and the end of the tensioning strap 92. After the locking strap 96 is wrapped around the foot, the user fastens the second end 97 of the locking strap. The locking strap 96 enables the tensioning strap 92 to remain in a position with the tensile force applied after the user tightens the tensioning strap 92.
Article of Footwear with Serially Arranged Tensioning Members
In operation, a user inserts a foot into the footwear 1410. The user tightens tensioning members 1420A by pulling on the tab 1422, and then secures the tab 1422 to a medial fastening pad 1440A. The user then tightens tensioning members 1420B by pulling on the tab 1424 and securing the tab 1424 to a lateral fastening pad 1440B. In a similar manner, the user may adjust tab 1434 first followed by tab 1436 to adjust the tensioning members 1430A and 1430B, respectively. The magnitude of compressive force applied to the foot by tensioning members 1420A and 1430A may be different than the compressive force applied by tensioning members 1420B and 1430B, respectively. The configuration of footwear 1410 provides compression to the medial and lateral sides of a foot without a crisscross arrangement of the tensioning members 1430A and 1430B.
Article of Footwear with Tensioning Members Affixed to a Strap
In operation, a user inserts a foot into the footwear 1510. The user pulls on the end of the strap 1530 that extends outside of the outer shell 1513. The tensioning members 1520 apply a compressive force to the heel, and the strap 1520 applies a compressive force to the ankle. The tensioning members 1520 are shown as engaging the heel, but may engage the forefoot and midfoot regions as well.
Article of Footwear with Tensioning Strap and Support Members
Footwear 1610 includes one or more pockets 1628 formed in the inner layer 1612. A support member, embodied herein as a nylon support member 1632 is positioned within the pocket 1628. The pocket 1628 is configured to enable the support member 1632 to move within the pocket 1628. In the example of
In operation, a user inserts a foot into the footwear 1610. The user may pull on straps 1616 and 1622 to apply compression to the forefoot, midfoot, heel, and ankle regions of the foot. Tension may be applied to the straps 1616 and 1622 in any order. The support member 1632 may move within the pocket 1628 to provide support to the foot in different orientations when wearing the footwear 1610.
Article of Footwear with Tensioning Strap Wrapped Around Foot
In operation, a user inserts a foot into the footwear 1710. The user may pull on the strap 1720 to apply compression to the midfoot and ankle regions of the foot. In the embodiment of
Although the present invention has been described with respect to certain preferred embodiments, it will be appreciated by those of skill in the art that other implementations and adaptations are possible. Moreover, there are advantages to individual advancements described herein that may be obtained without incorporating other aspects described above. Therefore, the spirit and scope of any appended claims should not be limited to the description of the preferred embodiments contained herein.
Claims
1. An article of footwear comprising:
- an outer shell;
- an inner layer positioned inside of the outer shell, the inner layer configured to surround and conform to at least a portion of a human foot; and
- at least one tensioning member engaging the inner layer, the at least one tensioning member including a portion that extends to a position that is outside of the outer shell, wherein the portion that extends to the position that is outside of the outer shell is configured to enable tightening and loosening of the at least one tensioning member.
2. The article of footwear of claim 1 wherein the portion that extends to the position that is outside of the outer shell is configured to be adjusted between a first position and a second position, wherein an effective length of the tensioning member inside the outer shell is greater in the first position than in the second position.
3. The article of footwear of claim 1 further comprising:
- a stabilizing member positioned between the inner layer and outer shell, wherein the stabilizing member is configured to provide support to a portion of the human foot.
4. The article of footwear of claim 3, wherein the stabilizing member engages the at least one tensioning member, the at least one tensioning member configured to adjust the stabilizing member with respect to the human foot in response to tightening and loosening of the at least one tensioning member.
5. The article of footwear of claim 4, wherein the stabilizing member is comprised of a semi-rigid material, and the at least one tensioning member is comprised of a flexible member.
6. The article of footwear of claim 4 wherein the stabilizing member extends from an ankle portion to a heel portion of the article of footwear.
7. The article of footwear of claim 1, wherein the at least one tensioning member has a first end and a second end, wherein the first end is attached to a portion of the inner layer conforming to a medial side of the human foot, and wherein the second end extends to the position that is outside of the outer shell on a lateral side of the human foot.
8. The article of footwear of claim 1, wherein the at least one tensioning member has a first end and a second end, wherein the first end is attached to a portion of the inner layer conforming to a lateral side of the human foot, and wherein the second end extends to the position that is outside of the outer shell on a medial side of the human foot.
9. The article of footwear of claim 1, wherein the at least one tensioning member has a first end attached to a portion of the inner layer conforming to a medial side of the human foot, wherein the at least one tensioning member extends underneath the human foot and upwards toward an ankle on the lateral side of the human foot.
10. The article of footwear of claim 1, wherein the at least one tensioning member has a first end attached to a portion of the inner layer conforming to a lateral side of the human foot, wherein the at least one tensioning member extends underneath the human foot and upwards toward an ankle on the medial side of the human foot.
11. The article of footwear of claim 1, wherein the tensioning member extends through an opening in the outer shell.
12. An article of footwear comprising:
- a sole;
- an upper connected to the sole, the upper and the sole defining a foot cavity;
- a tensioning member positioned within the foot cavity, the tensioning member configured to apply a compressive force to a foot positioned within the foot cavity; and
- a tension adjustment member positioned outside of the foot cavity, the tension adjustment member configured to adjust the compressive force applied to the foot positioned within the foot cavity.
13. The article of footwear of claim 12 further comprising a heel stabilizer positioned within the foot cavity, wherein the tension adjustment member is configured to draw the heel stabilizer closer to the foot within the foot cavity.
14. The article of footwear of claim 12 further comprising a sock positioned in the foot cavity, wherein the tensioning member engages the sock within the foot cavity.
15. The article of footwear of claim 12 wherein the tensioning member is a strap and the tension adjustment member is a portion of the strap that extends beyond a fastening location on the upper.
16. A method of providing compression to a foot, the method comprising:
- inserting the foot into a shoe having an outer shell;
- touching a portion of a tension adjustment member positioned outside of the outer shell, the tension adjustment member coupled to a tensioning member positioned at least partially within the shoe;
- moving the tension adjustment member in order to bring the tensioning member into closer engagement with the foot and provide compression to the foot.
17. The method of claim 16 wherein inserting the foot into the shoe includes inserting the foot into a flexible boot positioned within the outer shell.
18. The method of claim 17 wherein the tensioning member engages the flexible boot, and wherein moving the tension adjustment member changes the effective length of the tensioning member within the outer shell.
19. The method of claim 18 wherein the tensioning member is a band and the adjustment member is an end portion of the band.
20. The method of claim 19 wherein a stabilizing member is positioned inside of the shoe and moving the tensioning member draws the stabilizing member into closer engagement with a heel portion of the foot.
Type: Application
Filed: May 19, 2011
Publication Date: Dec 22, 2011
Applicant: UNDER ARMOUR, INC. (Baltimore, MD)
Inventors: Jason Berns (Baltimore, MD), Kevin Fisher (Baltimore, MD), Derek Campbell (Columbia, MD), Alan Guyan (Baltimore, MD), Michael White (Cockeysville, MD)
Application Number: 13/111,704