# US 7,611,749 B2 · Method and apparatus for applying flocking to the outsole of shoe under pressure

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 7,611,749 B2
- Document ID: US7611749B2
- Status: Granted
- Kind: B2
- Application number: 11/769,442
- Filed: 2007-06-27
- Published: 2008-03-20
- Granted: 2009-11-03
- Earliest claimed: 2006-09-18
- Assignees: Vida Shoes International, Inc.
- Inventors: Jie Zhan
- Web page: https://patentgrep.com/patent/US7611749B2

## CPC

- A43B 13/00: Soles; Sole-and-heel integral units
- A43B 3/0084: {Arrangement of flocked decoration on shoes}
- A43D 11/003: {Applying or removing protective coverings}
- A43D 11/14: Devices for treating shoe parts, e.g. stiffeners, with steam or liquid (for soled shoes A43D95/12)
- A43B: CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43D: MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR

## Abstract

Flocking fibers are applied to the outsole of a shoe by placing the fibers in a chamber within a housing and placing the outsole over an opening in the housing after applying an adhesive to a surface of the outsole which is to receive the flocking. A pressurized gas jet is activated to increase the pressure in the housing thereby causing the fibers to exit the chamber and collide with the adhesive surface of the outsole. The outsoles may be supported on screens within openings in a tray which is removably mountable on the housing over the opening therein.

## Claims

### Claim 1

A method of applying flocking fibers to the outsole of a shoe comprising,
inserting flocking fibers into a chamber within a housing,
coating a surface of said outsole with an adhesive,
placing said outsole outside of said chamber with said surface of said outsole over an opening in said housing in communication with said chamber,
increasing the pressure in said chamber to a level greater than the pressure outside of said chamber sufficiently to force said flocking fibers to exit said chamber through said opening without subjecting said flocking fibers to any electric field, and to collide with said adhesive on said surface of said outsole whereby at least some of said flocking fibers adhere to said adhesive.

### Claim 2 (depends on 1)

A method of applying flocking fibers to the outsole of a shoe according to claim 1 further comprising heating said adhesive after said flocking fibers have been adhered thereto for causing said adhesive to set.

### Claim 3 (depends on 1)

A method of applying flocking fibers to the outsole of a shoe according to claim 1 further comprising covering at least one area of said surface of said outsole with a mask before coating said surface of said outsole with said adhesive to prevent said at least one area from receiving said adhesive, and
removing said mask from said outsole after causing said flocking fibers to collide with said adhesive on said surface of said outsole, whereby said outsole is only partially covered with flocking fibers.

### Claim 4 (depends on 3)

A method of applying flocking fibers to the outsole of a shoe according to claim 3 further comprising coating said mask with an adhesive having a greater affinity for the mask than for the outsole before covering said at least one area of said surface of said outsole with said mask.

### Claim 5 (depends on 1)

A method of applying flocking fibers to the outsole of a shoe according to claim 1 further comprising removing excess flocking fibers from said outsole after said adhesive sets.

### Claim 6 (depends on 1)

A method of applying flocking fibers to the outsole of a shoe according to claim 1 further comprising,
directing a jet of a gas into said chamber, and
deflecting said jet of gas after it enters said chamber to increase the pressure therein in order to force said flocking fibers to exit from the chamber through the said opening in said housing.

### Claim 7 (depends on 1)

A method of applying flocking fibers to the outsole of a shoe according to claim 1 further comprising,
placing said outsole on a tray over an opening in said tray, and
placing said tray over said opening in said housing with said opening in said tray in registration with said opening in said housing.

### Claim 8 (depends on 7)

A method of applying flocking fibers to the outsole of a shoe according to claim 7 further comprising mounting a support for said outsole within said opening in said tray before placing said outsole on said tray over said opening in said tray.

### Claim 9 (depends on 8)

A method of applying flocking fibers to the outsole of a shoe according to claim 8 wherein said support comprises a screen.