GOLF BALL

• US 20130157782A1
• Filed: 12/16/2011
• Published: 06/20/2013
• Est. Priority Date: 12/16/2011
• Status: Abandoned Application

• Current Assignee: Bridgestone Sports Co Limited (Bridgestone Corporation)
• Original Assignee: Bridgestone Sports Co Limited (Bridgestone Corporation)
• Inventors: KOMATSU, Atsushi, OZAWA, Yuichiro, NASU, Hiroshi
• Application Number:
  US13/328,506
• Publication Number:
  US 20130157782A1
• Time in Patent Office: Days
• US Class Current: 473/378
• CPC Class Codes: A63B 37/0003 Golf balls
• CPC Class Codes: A63B 37/0004 Surface depressions or protrusions
• CPC Class Codes: A63B 37/00222 Physical properties, e.g. hardness
• CPC Class Codes: A63B 37/0023 Covers
• CPC Class Codes: A63B 37/0031 Hardness
• CPC Class Codes: A63B 37/0064 Diameter
• CPC Class Codes: A63B 37/0074 Two piece balls, i.e. cover and core
• CPC Class Codes: A63B 37/0075 Three piece balls, i.e. cover, intermediate layer and core
• CPC Class Codes: A63B 37/0092 Hardness distribution amongst different ball layers
• CPC Class Codes: A63B 45/00 Apparatus or methods for manufacturing balls working of plastics or substances in a plastic state B29
• CPC Class Codes: C08G 18/4063 Mixtures of compounds of group C08G18/62 with other macromolecular compounds
• CPC Class Codes: C08G 18/4288 modified by higher fatty oils or their acids or by resin acids
• CPC Class Codes: C08G 18/73 acyclic

Abstract

A golf ball of the present invention includes: a core located in the center of the golf ball; a cover surrounding the outside of the core and having plural dimples on the surface thereof; and a paint layer surrounding the outside of the cover. The paint layer is formed of a material having rubber elasticity. The paint layer may have a thickness of at most approximately 100 μm. The paint layer may have a hardness of at most approximately 70 in terms of JIS-C hardness. The cover may contain ionomer resin. The cover may have a hardness of at least 40 in terms of Shore D hardness.

Claims

1. A golf ball comprising:

a core located in a center of the golf ball;

a cover surrounding an outside of the core and having plural dimples on a surface thereof; and

a paint layer surrounding an outside of the cover, the paint layer formed of a material having rubber elasticity.

2. The golf ball according to claim 1, wherein the paint layer has a thickness of at most approximately 100 μ

m.

3. The golf ball according to claim 1, wherein the paint layer has a hardness of at most approximately 70 in terms of JIS-C hardness.

4. The golf ball according to claim 1, wherein a material used for forming the paint layer has a Young'"'"'s Modulus of at most approximately 70 MPa.

5. The golf ball according to claim 1, wherein the material for forming the paint layer has a Poisson'"'"'s ratio of at least approximately 0.45.

6. The golf ball according to claim 1, wherein the cover contains ionomer resin.

7. The golf ball according to claim 1, wherein the cover has a hardness of at least 40 in terms of Shore D hardness.