# US 6,390,872 B1 · Surfboard having improved leash plug anchoring

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- Number: US 6,390,872 B1
- Document ID: US6390872B1
- Status: Granted
- Kind: B1
- Application number: 09/513,622
- Filed: 2000-02-25
- Granted: 2002-05-21
- Earliest claimed: 2000-02-25
- Assignees: Hammer Corporation
- Inventors: Corey Croson Davis
- Web page: https://patentgrep.com/patent/US6390872B1

## CPC

- B63B 32/73: for tethering users or objects to the board, e.g. leashes
- B63B 32/57: Boards characterised by the material, e.g. laminated materials
- B63B 32/77: Arrangements for fixation of accessories to the board, e.g. inserts or rails
- B63B: SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING (arrangements of vessel ventilation, heating, cooling, or air-conditioning B63J2/00; floating substructures as supports of dredgers or soil-shifting machines E02F9/06)

## Abstract

A surfboard, comprising a blank made of lightweight, semi-rigid material and having a top major surface. A layer of resin-impregnated cloth adhered to the top major surface and a leash plug including a cup portion that is set into the top major surface of the blank and at least one extension that is interposed between the blank and the layer of resin-impregnated cloth.

## Claims

### Claim 1

A surfboard, comprising:
a) a blank made of lightweight, semi-rigid material and having a top major surface;
b) a layer of resin-impregnated cloth adhered to said top major surface; and
c) a leash plug including a cup portion and an extension, said cup portion being set into said top major surface of said blank and said extension being interposed between said blank and said layer of resin-impregnated cloth.

### Claim 2 (depends on 1)

The surfboard of claim 1 wherein said blank of lightweight, semi-rigid material is made of cellular polystyrene.

### Claim 3 (depends on 1)

The surfboard of claim 1 wherein said blank of lightweight, semi-rigid material is made of cellular polyurethane.

### Claim 4 (depends on 1)

The surfboard of claim 1 wherein said cloth is made at least in part of fiberglass.

### Claim 5 (depends on 1)

The surfboard of claim 1 wherein said extension is a rim encircling said cup portion.

### Claim 6 (depends on 1)

The surfboard of claim 1 wherein said leash plug further includes a ridge encircling said cup portion.

### Claim 7

A method of manufacturing a surfboard, comprising:
a) providing a blank of lightweight semi-rigid material having a top major surface;
b) forming an indentation in said blank at said top major surface;
c) providing a leash plug having a cup portion and an extension extending outwardly from said cup portion;
d) placing said cup portion in said indentation so that said extension extends outwardly from said cup over a portion of said top major surface;
e) placing a cloth over said top major surface, so that said extension is interposed between said top major surface and said cloth;
f) impregnating said cloth with resin;
g) curing said resin.

### Claim 8 (depends on 7)

The method of claim 7 wherein said blank of lightweight, semi-rigid material is made of cellular polystyrene.

### Claim 9 (depends on 7)

The method of claim 7 wherein said blank of lightweight, semi-rigid material is made of polyurethane.

### Claim 10 (depends on 7)

The method of claim 7 wherein said cloth is made at least in part of fiberglass.

### Claim 11 (depends on 7)

The method of claim 7 wherein said extension is a rim encircling said cup portion.

### Claim 12 (depends on 7)

The method of claim 7 wherein said leash plug further includes a ridge encircling said cup portion.

### Claim 13

A leash plug having a top and a bottom and comprising:
a) a cup portion having a top at said top of said leash plug, traversed by a cross-bar;
b) a ridge encircling and defining said top of said cup portion;
c) a rim extending outwardly from said ridge; and
d) a retention wall extending downwardly from said rim, substantially at a right angle to said rim.

### Claim 14 (depends on 13)

The leash plug of claim 13 made, at least in part, of nylon mixed with glass fibers.