Golf ball

• US 5,833,554 A
• Filed: 07/02/1997
• Issued: 11/10/1998
• Est. Priority Date: 11/27/1991
• Status: Expired due to Term

• Current Assignee: Callaway Golf Company
• Original Assignee: Lisco Incorporated
• Inventors: Sullivan, Michael J., Binette, Mark, Nesbitt, Dennis
• Primary Examiner(s): Marlo, George J.
• Application Number:
  US08/887,053
• Time in Patent Office: 496 Days
• Field of Search: 473/373, 473/374, 473/375, 473/376, 473/377, 473/378, 473/385
• US Class Current: 473/374
• CPC Class Codes: A63B 37/0003 Golf balls
• CPC Class Codes: A63B 37/0004 Surface depressions or protrusions
• CPC Class Codes: A63B 37/0021 Occupation ratio, i.e. percentage surface occupied by dimples
• CPC Class Codes: A63B 37/0031 Hardness
• CPC Class Codes: A63B 37/0043 Hardness
• CPC Class Codes: A63B 37/008 Diameter
• CPC Class Codes: A63B 37/0083 Weight; Mass

Abstract

A golf ball having an outside diameter of substantially 1.70 to 1.80 inches and a weight no grater than 1.62 ounces.

The ball includes a spherical core, a mantel surrounding the core; and an outer cover surrounding the core and the mantle.

The mantle and outer cover each have a different Shore D hardness. The ball has a dimple pattern covering at least 70% of the surface of the ball.

Claims

1. A golf ball of improved playing characteristics comprising:

a ball having an outside diameter of substantially 1.70 to 1.80 inches and a weight no greater than 1.62 ounces said ball comprising

a spherical core;

a mantle surrounding said core;

an outer cover surrounding said core and said mantle;

said mantle and said outer cover having a different Shore D hardness; and

said ball having a dimple pattern covering at least 70% of the surface of the ball.

2. The golf ball of claim 1 wherein the Shore D hardness of said mantle is greater than the Shore D hardness of said outer cover.

3. The golf ball of claim 2 wherein the Shore D hardness of said mantle is about 60 or more and the Shore D hardness of said cover is about 60 or less.

4. The golf ball of claim 1 wherein the Shore D hardness of said mantle is less than the Shore D hardness of said outer cover.

5. The golf ball of claim 4 wherein the Shore D hardness of said mantle has a Shore D hardness of about 65 or less and said outer cover has a Shore D hardness of about 60 or more.