IP Library Granted Patent US 7,444,766
Granted Patent B2
US 7,444,766 · App. 10/963,885 · Granted Nov 4, 2008

Footwear with enhanced cushioning

View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 7,444,766
App. No.
10/963,885
Granted
Nov 4, 2008
Kind
B2
Abstract

Footwear includes an insole of low density polyurethane and an integral border for attaching the insole to the upper and having an integral support surface for attaching a steel shank. The footwear includes the insole and two contiguous cushioning layers.

Claims (17)

1. A method of producing an insole for footwear comprising the steps of:

a. providing a non-woven cloth material having an opening therein in the shape of the insole to be formed;

b. inserting the cloth material in a mold;

c. placing polyurethane in the opening in said non-woven cloth material; and

d. molding the polyurethane and non-woven cloth material to form an insole so that the non-woven cloth material provides a border around the polyurethane.

2. A method of producing an insole for footwear as recited in claim 1 wherein the polyurethane has a specific gravity of between 0.35 and 0.45.

3. A method of producing an insole for footwear as recited in claim 1 including the further steps of providing the same non-woven material in the bottom of said mold and molding the polyurethane and said same non-woven material to form a support surface.

4. A method of producing an insole for footwear, comprising the steps of:

providing a non-woven fabric having an opening therein corresponding to the shape of the insole to be formed;

inserting the non-woven fabric in a mold;

placing a polyurethane material in the opening in the non-woven fabric; and

molding the polyurethane and the non-woven fabric to form an insole having a non-woven material border.

5. The method of producing an insole for footwear recited in claim 4 , wherein the molded polyurethane has a specific gravity between 0.35 and 0.45.

6. The method of producing an insole for footwear recited in claim 4 , further comprising the steps of:

placing a shaped piece of the same material as the border in the bottom of the mold; and

molding the shaped piece to the polyurethane to form a support surface under the polyurethane.

7. The method of producing an insole for footwear recited in claim 6 , wherein the shaped piece corresponds to the opening in the non-woven fabric.

Assignments (7)
RELEASE OF SECURITY INTEREST Recorded May 1, 2024
From: TCW ASSET MANAGEMENT COMPANY LLC
To: ROCKY BRANDS US, LLC; US FOOTWEAR HOLDINGS LLC
Reel/Frame 067282/0510 →
SECURITY INTEREST Recorded Apr 29, 2024
From: ROCKY BRANDS, INC.; ROCKY BRANDS US, LLC; US FOOTWEAR HOLDINGS LLC
To: BANK OF AMERICA, N.A., AS AGENT
Reel/Frame 067260/0452 →
SECURITY INTEREST Recorded Mar 22, 2021
From: ROCKY BRANDS US, LLC; ROCKY BRANDS, INC.; US FOOTWEAR HOLDINGS LLC
To: TCW ASSET MANAGEMENT COMPANY LLC, AS AGENT
Reel/Frame 055679/0001 →
SECURITY INTEREST Recorded Mar 15, 2021
From: ROCKY BRANDS US, LLC; ROCKY BRANDS, INC.; US FOOTWEAR HOLDINGS LLC
To: BANK OF AMERICA, N.A.
Reel/Frame 055590/0294 →
CHANGE OF NAME Recorded Mar 11, 2021
From: ROCKY BRANDS WHOLESALE LLC
To: ROCKY BRANDS US, LLC
Reel/Frame 055564/0291 →
MERGER Recorded Mar 22, 2007
From: GEORGIA BOOT LLC
To: ROCKY BRANDS WHOLESALE LLC
Reel/Frame 019035/0989 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 12, 2004
From: MITCHELL, DAVID
To: GEORGIA BOOT LLC
Reel/Frame 015892/0429 →