Golf club head

• US 4,809,978 A
• Filed: 01/28/1987
• Issued: 03/07/1989
• Est. Priority Date: 07/29/1983
• Status: Expired due to Term

• Current Assignee: Sumitomo Rubber Industries Limited
• Original Assignee: Sumitomo Rubber Industries Limited
• Inventors: Kurahashi, Koichiro, Yamaguchi, Tetsuo
• Primary Examiner(s): Marlo, George J.
• Application Number:
  US07/007,594
• Time in Patent Office: 769 Days
• Field of Search: 273/DIG. 22, 273/167 J, 273/173, 273/174, 273/78, 273/235, 273/227, 273/175, 273/167 F, 273/167 R, 273/167 B, 273/167 H, 273/167 K, 273/168
• US Class Current: 473/329
• CPC Class Codes: A63B 53/04 Heads
• CPC Class Codes: A63B 53/0416 Heads having an impact surface provided by a face insert
• CPC Class Codes: A63B 53/0466 wood-type
• CPC Class Codes: A63B 53/047 iron-type
• CPC Class Codes: A63B 60/00 Details or accessories of golf clubs, bats, rackets or the like
• CPC Class Codes: Y10S 273/22 Ionomer

Abstract

A golf club head of a wood-type or an iron-type golf club having a face plate forming a part of the entire impact front face of the club head, and the face plate is formed of an ionomer resin having a compression Young'"'"'s modulus in the range of 20 to 50 Kg/mm².

Claims

1. A golf club head of a golf club comprising

a face plate forming at least a part of the impact front face of the golf club head;

said face plate being formed of an ionomer resin having a compression Young'"'"'s modulus in the range of 20 to 50 Kg/mm².

2. The golf club head as defined in claim 1, wherein the face plate is 3 to 35 mm in thickness.

3. The golf club head as defined in claim 2, wherein the face plate is 12 to 26 mm in thickness.

4. The golf club head as defined in claim 1, wherein the face plate is 8 to 30 mm in thickness.

5. The golf club head as defined in claim 4, wherein the face plate is 17 to 23 mm in thickness.

6. The golf club head as defined in claim 1, in which the golf club is an iron-type golf club, wherein the face plate forms at least a part of the impact front face of the golf club head, in which the body of the golf club head comprises metal.

7. The golf club head as defined in claim 1, in which the golf club is a wood-type golf club, wherein the face plate forms at least a part of the impact front face of the golf club head, in which the body of the golf club head comprises at least one material selected from the group consisting of wood, a synthetic resin other than an ionomer resin, carbon and a light alloy.

8. A golf club comprising the golf club head of claim 1, wherein the golf club is an iron-type golf club.

9. A golf club comprising the golf club head of claim 1, wherein the golf club is a wood-type golf club.

10. The golf club head as defined in claim 1, wherein said face plate comprises a substantially trapezoidal shape.

11. The golf club head as defined in claim 1, wherein said face plate formed covers the entire impact front face of the golf club head.