Golf club head

• US 4,681,321 A
• Filed: 01/29/1986
• Issued: 07/21/1987
• Est. Priority Date: 01/29/1986
• Status: Expired due to Fees

• Current Assignee: Chin-Chi Chen, Yung-Shing Lin
• Original Assignee: Chin-Chi Chen, Yung-Shing Lin
• Inventors: Chen, Chin-Chi, Lin, Yung-Shing
• Primary Examiner(s): Marlo, George J.
• Application Number:
  US06/823,753
• Time in Patent Office: 538 Days
• Field of Search: 273/167 H, 273/169, 273/DIG. 7, 273/DIG. 23, 273/170, 273/171, 273/172, 273/173, 273/174, 273/167 J
• US Class Current: 473/332
• CPC Class Codes: A63B 53/04 Heads
• CPC Class Codes: A63B 53/045 Strengthening ribs
• CPC Class Codes: A63B 53/0466 wood-type
• CPC Class Codes: A63B 60/00 Details or accessories of golf clubs, bats, rackets or the like
• CPC Class Codes: Y10S 273/07 Glass fiber
• CPC Class Codes: Y10S 273/23 High modulus filaments

Abstract

A golf club head is provided, having an inner body formed of composite material and an outer body formed of a composite material secured to the outer surface of the inner body and accommodating the inner body. The inner body is hollow, and includes a plurality of rib plates therein to form a force bridge system, each rib plate extending from the inner surface of the inner body adjacent to the hitting surface of the outer body and radially to the surface opposite to the hitting surface.

Claims

1. In a golf club head having a neck portion by which the golf club head may be attached to a shaft for use as a golf club, and in which the golf club head includes a molded synthetic plastic resin outer body member having an upwardly convexly arcuate top wall, a fan-shaped, generally flat, front hitting plane wall, a rearwardly convex arcuate rear wall and a generally flat bottom plate, all merging into one another at respective margins, with the neck extending upwards from the top wall near one end of the front hitting plane wall,

the improvement wherein:

said golf club head comprises a hollow inner body having an outer surface, and said outer body member completely envelops said inner body and is intimately in contact with said outer surface throughout substantially all of said inner body; and

said inner body further includes at least two generally vertical internal partition walls which integrally extend from said bottom plate to said top wall and from said front hitting plane wall to said rear wall and divide said inner body, internally thereof into at least three separate compartments, with said partition walls being disposed to perform, in use, as respective force bridges.

2. The improved golf club head of claim 1, wherein:

said internal partition walls diverge from one another from generally centrally of said front hitting plane wall towards said rear wall.

3. The improved golf club head of claim 1, wherein:

both said inner body and said outer body are made of like synthetic plastic resin having a filling of carbon fiber.

4. The improved golf club head of claim 1, wherein:

both said inner body and said outer body are made of like synthetic plastic resin having a filling of glass fiber.