# US 7,607,997 B2 · Low volume cover for a golf ball

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- Number: US 7,607,997 B2
- Document ID: US7607997B2
- Status: Granted
- Kind: B2
- Application number: 12/268,165
- Filed: 2008-11-10
- Published: 2009-03-12
- Granted: 2009-10-27
- Earliest claimed: 2005-04-08
- Assignees: Callaway Golf Company
- Inventors: Vincent J. Simonds; Thomas A. Veilleux; Thomas F. Bergin
- Web page: https://patentgrep.com/patent/US7607997B2

## CPC

- A63B 37/0004: {Surface depressions or protrusions}
- A63B 37/0005: {Protrusions}
- A63B 37/0009: {Polygonal}
- A63B 37/0013: {The dimple being formed in both the cover and the underlying layer}
- A63B 37/0018: {Specified number of dimples}
- A63B 37/0022: {Coatings, e.g. paint films; Markings}
- A63B 37/0029: {Physical properties}
- A63B 37/0031: {Hardness}
- A63B 37/0033: {Thickness}
- A63B 37/0037: {Flexural modulus; Bending stiffness}
- A63B 37/0045: {Thickness}
- A63B 37/0049: {Flexural modulus; Bending stiffness}
- A63B 37/0064: {Diameter}
- A63B 37/0065: {Deflection or compression}
- A63B 37/0075: {Three piece balls, i.e. cover, intermediate layer and core}
- A63B 37/008: {Diameter}
- A63B 37/0084: {Initial velocity}
- A63B 37/12: Special coverings {, i.e. outer layer material (balls with finger holes A63B37/0001, golf ball covers A63B37/0023)}
- A63B 37/0012: {Dimple profile, i.e. cross-sectional view}
- A63B 37/0019: {Specified dimple depth}
- A63B 37/0043: {Hardness}
- A63B: APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT (apparatus for passive exercising, massage A61H)

## Abstract

A golf ball (20) having a low volume cover layer (14) is disclosed herein. The golf ball (20) has a cover layer (14) with a volume less than 0.1550 cubic inches. In a preferred embodiment, the cover layer (14) is composed of a reaction-injection molded polyurethane material. Preferably, the cover layer (14) has a plurality of deep depressions (99) with either a plurality of multi-faceted polygons (44) or dimples.

## Claims

### Claim 1

A golf ball comprising:
a core;
a cover layer disposed over the core, the cover layer having a material volume ranging from 0.1550 cubic inches to 0.070 cubic inches, the cover layer comprising 1 to 10 deep depressions and a plurality of multi-faceted polygons defined by a pluralilty of lattice members;
wherein the golf ball has a diameter of at least 1.68 inches.

### Claim 2 (depends on 1)

The golf ball according to claim 1 wherein the each of the plurality of multi-faceted polygons is either a hexagon or a pentagon.

### Claim 3 (depends on 1)

The golf ball according to claim 1 wherein the cover layer has a thickness ranging from 0.010 inch to 0.030 inch.

### Claim 4 (depends on 1)

The golf ball according to claim 1 wherein the cover layer has a thickness ranging from 0.010 inch to 0.025 inch.

### Claim 5 (depends on 1)

The golf ball according claim 1 further comprising at least one boundary layer positioned between the core and the cover layer.

### Claim 6 (depends on 1)

The golf ball according to claim 1 wherein the cover layer has a material volume ranging from 0.095 cubic inches to 0.105 cubic inches.

### Claim 7 (depends on 1)

The golf ball according to claim 1 further comprising a coating layer on the cover layer.