US20080060221A1 - Shoe sole with loose fill compartments seperated by arch support - Google Patents
Shoe sole with loose fill compartments seperated by arch support Download PDFInfo
- Publication number
- US20080060221A1 US20080060221A1 US11/859,572 US85957207A US2008060221A1 US 20080060221 A1 US20080060221 A1 US 20080060221A1 US 85957207 A US85957207 A US 85957207A US 2008060221 A1 US2008060221 A1 US 2008060221A1
- Authority
- US
- United States
- Prior art keywords
- shoe
- midsole
- loose fill
- fill material
- compartment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form
- A43B13/16—Pieced soles
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B1/00—Footwear characterised by the material
- A43B1/0063—Footwear characterised by the material made at least partially of material that can be recycled
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/02—Soles; Sole-and-heel integral units characterised by the material
- A43B13/04—Plastics, rubber or vulcanised fibre
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/02—Soles; Sole-and-heel integral units characterised by the material
- A43B13/12—Soles with several layers of different materials
- A43B13/125—Soles with several layers of different materials characterised by the midsole or middle layer
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form
- A43B13/18—Resilient soles
- A43B13/187—Resiliency achieved by the features of the material, e.g. foam, non liquid materials
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form
- A43B13/18—Resilient soles
- A43B13/187—Resiliency achieved by the features of the material, e.g. foam, non liquid materials
- A43B13/188—Differential cushioning regions
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B3/00—Footwear characterised by the shape or the use
- A43B3/10—Low shoes, e.g. comprising only a front strap; Slippers
- A43B3/108—Low shoes, e.g. comprising only a front strap; Slippers characterised by the sole
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
- Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Abstract
A shoe is provided with an outsole that contacts the ground, an insole upon which a foot rests, and a midsole located between the outsole and the insole. The midsole cushions the wearer's foot by providing a loose fill material in a front compartment on which the toes and ball of the foot of the wearer rest and a heel compartment on which the heel of the wearer rests. The front compartment is divided into at least two sub compartments to keep the loose fill evenly distributed. The front compartment and the heel compartment are separated by an arch support section of the midsole, which provides relatively rigid support for the arch of the wearer's foot.
Description
- This application is a Continuation in Part Application of U.S. patent application Ser. No. 10/905,144 filed on Dec. 17, 2004. These applications are herein incorporated by reference.
- 1. Field of the Invention
- The present invention relates generally to the comfort and support in the sole of a shoe. In particular, the present invention relates to a shoe with a midsole that is partially filled with a loose fill material such as crumb rubber derived from rubber tires for shock absorption, cushioning, energy return, added comfort and stability.
- 2. Discussion of the Related Art
- Dress, casual and athletic shoes generally include an upper portion and an inner lining that cover the top of the foot, a counter placed between the upper portion and the lining to provide rigidity at the heel, an insole upon which the foot rests, an outsole which contacts the ground surface and a midsole portion that is positioned between the insole and outsole.
- A filler is a material that fills the compartments, if present, formed in the midsole when the midsole and the outsole are connected. The outsole is the bottom portion of the shoe that contacts the ground or floor surface that is usually manufactured from leather, rubber or any of several suitable synthetic materials. A scrim is a thin flexible sheet of fabric or plastic film that may be either glued or sewn over the loose fill compartments to create a top for the compartments.
- The manufacture of shoes using conventional construction methods is a complicated and expensive process. In this regard, improvements are sought to simplify the construction process and cost of materials that corresponding decrease the cost of manufacturing the shoe, while maintaining all of the functionality of the shoe.
- In the prior art, most improvements in shoe design have focused on the midsole. The midsole is a shoe's main cushioning system. In early athletic shoes, midsoles did not exist. Early basketball shoes had some rubber cushioning inside them, but nothing as advanced and innovative as the modern midsole found in every type of shoe from walking shoes to basketball shoes. These innovations range from improved foam midsoles to very complicated air and fluid systems. While these increasingly complicated midsoles may improve performance, the cost to manufacture these shoes has increased dramatically.
- Thus, there is a need in the art for a shoe having a less expensive midsole construction with a lower density while providing adequate cushioning and stability for every type of shoe or boot.
- It is an object of the present invention to provide a shoe with superior comfort, performance and stability by loose fill located in compartments in the midsole located in the heel and front of the shoe. This object is met by the present invention by constructing a shoe with a midsole that has compartments where the wearer's heel, ball of the foot and toes would normally rest. These compartments are filled with a loose fill. A scrim may be sewn or glued into place above the compartments to form a top for the compartments. The loose fill may also be held in place by the use of adhesives. An arch support section separates the front compartment from the heel compartment and is made of the same material as the rest of the midsole. The arch support provides relatively rigid support to improve the shoe's comfort and stability. In addition, by separating the front compartment and the heel compartment, the cushioning provided by the loose fill may be targeted to the locations where a wearer experiences the highest impact forces while moving, namely the heel and the ball of the foot and toes.
- A clear understanding of the various advantages and features of the present invention, as well as the construction and operation of conventional components and mechanisms associated with the present invention, will become apparent by referring to the exemplary, and therefore non-limiting, embodiments illustrated in the following drawings which accompany and form a part of this patent specification.
-
FIG. 1 is a perspective view of a shoe; -
FIG. 2 is a cross-sectional view of the shoe; -
FIG. 3 is a cross-sectional view of the heel of a shoe; and, -
FIG. 4 is a cross-sectional view of the midsole of a shoe with compartments and sub compartments to contain the fill in the shoe. - Referring to
FIG. 1 , the present invention includes generally ashoe 10 having anoutsole 12, amidsole 14, and aninsole 16. In the preferred embodiment of the present invention,shoe 10 is any shoe including but not limited to an athletic shoe, a casual shoe, a boot, a sandal, or a dress shoe. -
Outsole 12 ofshoe 10 is commonly made from a variety of materials including elastomer styrene-butadiene rubber or a carbon fiber rubber. Lying on the bottom side ofshoe 10,outsole 12's main purpose is to provide friction and durability. Different treads onoutsoles 12 defineshoe 10's purpose. For example, on an athletic shoe, waffle-studded treads act like support columns to absorb and dissipate impact. - Just above
outsole 12 ismidsole 14.Midsole 14 absorbs impact by cushioning but also returns energy to the wearer of theshoe 10. Abovemidsole 14 is insole 16.Insole 16 is commonly made from polymer foam lined with a fabric cover. The main purpose ofinsole 16 is to provide comfort and shock absorption at impact, largely in the heel section ofshoe 10. - Referring to
FIGS. 2-3 , in order to reduce manufacturing costs associated with the current complex systems used for midsoles, themidsole 14 ofshoe 10 in the preferred embodiment of the present invention includes aloose fill material 18 instead of a continuous section of material normally found inmidsole 14.Loose fill 18 is placed in compartments at theheel 22 andfront 20 of themidsole 14. - In the preferred embodiment of the present invention,
material 18 is a crumb rubber. Other materials such as ground rubber, plasticized polyvinyl chloride (PVC), ethylene-vinyl acetate (EVA), polyethylene terephthalate (PET), polyethylene resin, polyethylene foam, polyurethane foam or ethylene vinyl chloride (EVC) are available new or recycled and are able to provide stability and cushioning properties similar to crumb rubber. Such materials can be formed or shredded into pellet-like shapes similar to crumb rubber. Natural materials such as sand or buckwheat hulls may also serve as loose fill, but they may have different characteristics than crumb rubber. - Shredding scrap tires makes crumb rubber and it is a particulate material free of fiber and steel. It is generally made commercially available in 50-pound bags or 2000-pounds bulk bags. The size of the rubber particles is graded. The finest one can be as small as about 0.2 mm (Mesh −80) and below. Crumb rubber is light in weight and is durable. From the safety consideration, crumb rubber is a non-toxic and inert material.
- In addition to crumb
rubber fill material 18 being inexpensive to use in the manufacturing ofshoe 10, since it is a recycled material, use of crumb rubber helps to reduce the number of scrap tires that otherwise go to landfills or other kinds of waste storage facilities. -
FIG. 4 illustrates an embodiment of the present invention that includes afront compartment 20, aheel compartment 22, and anarch support 26 section of the midsole separating thefront compartment 20 from theheel compartment 22. Thearch support 26 section separates thefront compartment 20 from theheel compartment 22 and is made of the same material as the rest of the midsole. The arch 26 support provides relatively rigid support to improve the shoe's comfort and stability. By separating thefront compartment 20 and theheel compartment 22, the cushioning provided by theloose fill 18 may be targeted to the locations where a wearer experiences the highest impact forces while moving, namely the heel and the ball of the foot and toes. - The
divider 24 is designed to prevent the loose fill material from collecting within one area of the midsole. It may have a T shape, Y shape (not shown) or any other shape which will ensures the even distribution offill material 18 in thefront compartment 20 and guards against uneven compaction ofmaterial 18. To further guard against uneven distribution ofmaterial 18, fillmaterial 18 may include an adhesive that binds theloose crumb rubber 18 together to some extent. Not shown is a scrim that may be glued or sewn over the top of thefront compartment 20 and theheel compartment 22. It would serve as a top to contain the loose fill. The scrim, present, would be under the insole. - The scope of the application is not to be limited by the description of the preferred embodiments described above, but is to be limited solely by the scope of the claims that follow. For example, a composite sheet of crumb rubber including a binding adhesive may be used in place of loose fill crumb rubber to fill
midsole 14 ofshoe 10 without departing from the scope of the preferred embodiment of the present invention.
Claims (20)
1. A shoe comprising:
an outsole;
an insole; and
a midsole located between the outsole and the insole, wherein the midsole provides a loose fill material for cushioning in a front compartment and a heel compartment in the midsole of the shoe.
2. A shoe according to claim 1 , wherein the front compartment and the heel compartment are separated by an arch support section of the midsole.
3. A shoe according to claim 2 , wherein the loose fill material is crumb rubber.
4. A shoe according to claim 3 , wherein a portion of the loose fill material is adhesively bound together to form a composite layer of crumb rubber.
5. A shoe according to claim 1 , wherein the front compartment is divided into at least two sub compartments.
6. A shoe according to claim 5 , wherein each of the sub compartments and the heel compartment are filled with the loose fill material.
7. A shoe according to claim 6 , wherein the loose fill material is crumb rubber.
8. A shoe according to claim 1 , wherein the shoe includes an athletic shoe, a casual shoe, a boot, a sandal or a dress shoe.
9. A shoe according to claim 1 , wherein the insole is polymer foam lined with a fabric cover.
10. A shoe according to claim 1 , wherein the outsole is manufactured from elastomer styrene-butadiene rubber, leather, or synthetic material.
11. A shoe comprising:
an outsole;
an insole; and
a midsole located between the outsole and the insole, wherein the midsole provides a loose fill material for cushioning in a front compartment and a heel compartment of the midsole of the shoe, wherein the loose fill material is bound together with an adhesive.
12. A shoe according to claim 11 , wherein the front compartment and the heel compartment are separated by an arch support section of the midsole.
13. A shoe according to claim 12 , wherein the loose fill material is crumb rubber.
14. A shoe according to claim 13 , wherein the loose fill material forms a composite layer of crumb rubber.
15. A shoe according to claim 11 , wherein the front compartment is divided into at least two sub compartments.
16. A shoe according to claim 15 , wherein each of the front sub compartments and the heel compartment are filled with the loose fill material.
17. A shoe according to claim 16 , wherein the loose fill material is crumb rubber.
18. A shoe according to claim 11 , wherein the shoe includes an athletic shoe, a casual shoe, a boot, a sandal or a dress shoe.
19. A shoe comprising:
an outsole;
an insole; and
a midsole located between the outsole and the insole, wherein the midsole absorbs provides a loose fill material for cushioning in a front compartment and a heel compartment in the midsole of the shoe, wherein the front compartment is divided into at least two sub compartments and each of the compartments is filled with the loose fill material, and wherein the front compartment and the heel compartment are separated by an arch support section of the midsole.
20. A shoe according to claim 19 , wherein the loose fill material is crumb rubber.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/859,572 US20080060221A1 (en) | 2004-12-17 | 2007-09-21 | Shoe sole with loose fill compartments seperated by arch support |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/905,144 US20060130363A1 (en) | 2004-12-17 | 2004-12-17 | Shoe sole with a loose fill comfort support system |
US11/859,572 US20080060221A1 (en) | 2004-12-17 | 2007-09-21 | Shoe sole with loose fill compartments seperated by arch support |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/905,144 Continuation US20060130363A1 (en) | 2004-12-17 | 2004-12-17 | Shoe sole with a loose fill comfort support system |
Publications (1)
Publication Number | Publication Date |
---|---|
US20080060221A1 true US20080060221A1 (en) | 2008-03-13 |
Family
ID=36588662
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/905,144 Abandoned US20060130363A1 (en) | 2004-12-17 | 2004-12-17 | Shoe sole with a loose fill comfort support system |
US11/859,555 Abandoned US20080066341A1 (en) | 2004-12-17 | 2007-09-21 | Shoe sole comfort and support system containing blends of loose fill material |
US11/859,572 Abandoned US20080060221A1 (en) | 2004-12-17 | 2007-09-21 | Shoe sole with loose fill compartments seperated by arch support |
Family Applications Before (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/905,144 Abandoned US20060130363A1 (en) | 2004-12-17 | 2004-12-17 | Shoe sole with a loose fill comfort support system |
US11/859,555 Abandoned US20080066341A1 (en) | 2004-12-17 | 2007-09-21 | Shoe sole comfort and support system containing blends of loose fill material |
Country Status (3)
Country | Link |
---|---|
US (3) | US20060130363A1 (en) |
EP (1) | EP1830674A4 (en) |
WO (1) | WO2006066256A2 (en) |
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Also Published As
Publication number | Publication date |
---|---|
WO2006066256A3 (en) | 2006-11-23 |
EP1830674A4 (en) | 2011-02-02 |
US20080066341A1 (en) | 2008-03-20 |
WO2006066256A2 (en) | 2006-06-22 |
US20060130363A1 (en) | 2006-06-22 |
EP1830674A2 (en) | 2007-09-12 |
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