IP Library › Granted Patent US 10,918,161
Granted Patent B2
US 10,918,161 · App. 16/745,929 · Granted Feb 16, 2021

Footwear sole, boot and sandal

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Quick Facts
Patent No.
US 10,918,161
App. No.
16/745,929
Filed
Jan 17, 2020
Granted
Feb 16, 2021
Kind
B2
Art Unit
1765
USPC
428/131
Abstract

Aspects of the invention can be directed to a boot including a sole portion, a lower portion, and a boot shaft portion. The sole portion, the lower portion and the boot shaft portion can be formed as a unitary member composed of a single compound. The wherein the single compound can include: EVA in the range of 17% to 27%, POE in the range of 6% to 16%, SEBS in the range of 10% to 20%, and rubber in the range of 19% to 29%.

Claims (42)

1. A boot, comprising:

a sole portion;

a lower portion; and

a boot shaft portion,

wherein the sole portion, the lower portion and the boot shaft portion are formed as a unitary member composed of a single compound, and

wherein the single compound includes:

styrene ethylene butylene styrene block copolymer (SEBS)

ethyl vinyl acetate copolymer (EVA) in the range of 17% to 27% by weight; and

polyolefin elastomer (POE) in the range of 6% to 16% by weight.

2. The boot of claim 1 , wherein the single compound includes:

EVA in the range of 20% to 24% by weight; and

POE in the range of 9% to 13% by weight.

3. The boot of claim 2 , wherein the single compound includes:

EVA 22% by weight; and

POE 11% by weight.

4. The boot of claim 1 , wherein the single compound further includes:

a bridging agent in the range of 0% to 2 by weight %.

5. The boot of claim 4 , wherein the single compound further includes a foaming agent in the range of 0% to 4% by weight.

6. The boot of claim 1 , wherein the boot is formed by a single shot injection molding process.

7. The boot of claim 1 , wherein the boot is formed by a two step compression molding process.

8. A sandal, comprising:

a sole portion; and

an upper portion,

wherein the sole portion and the upper portion are formed as a unitary member composed of a single compound, and

wherein the single compound includes:

styrene ethylene butylene styrene block copolymer (SEBS)

ethyl vinyl acetate copolymer (EVA) in the range of 17% to 27% by weight; and

polyolefin elastomer (POE) in the range of 6% to 16% by weight.

9. The sandal of claim 8 , wherein the single compound includes:

EVA in the range of 20% to 24% by weight; and

POE in the range of 9% to 13% by weight.

10. The sandal of claim 9 , wherein the single compound includes:

EVA 22% by weight; and

POE 11% by weight.

11. The sandal of claim 8 , wherein the single compound further includes:

a bridging agent in the range of 0% to 2% by weight.

12. The sandal of claim 11 , wherein the single compound further includes a foaming agent in the range of 0% to 4% by weight.

13. The sandal of claim 8 , wherein the sandal is formed by a single shot injection molding process.

14. The sandal of claim 8 , wherein the sandal is formed by a two step compression molding process.

15. The sandal of claim 8 , wherein the upper portion includes one or more straps.

16. The sandal of claim 15 , wherein the upper portion includes a toe post.

17. The sandal of claim 8 , wherein the upper portion includes a plurality of apertures.