Wood type golf club head

• US 5,516,107 A
• Filed: 01/31/1994
• Issued: 05/14/1996
• Est. Priority Date: 08/13/1991
• Status: Expired due to Fees

• Current Assignee: Yokohama Rubber Company Limited
• Original Assignee: Yokohama Rubber Company Limited
• Inventors: Okumoto, Takaharu, Soeda, Heihatiro, Kawada, Kazuo, Kobayashi, Toshio
• Primary Examiner(s): Passaniti, Sebastiano
• Application Number:
  US08/188,811
• Time in Patent Office: 834 Days
• Field of Search: 273/167 R, 273/167 H, 273/167 F, 273/169, 273/170, 273/171, 273/172, 273/173, 273/193 R, 273/194 R, 273/DIG. 3, 273/DIG. 6, 273/DIG. 8 , 273/DIG. 23, 273/77 R, 273/78
• US Class Current: 473/346
• CPC Class Codes: A63B 2209/02 with reinforcing fibres, e.g. carbon, polyamide fibres
• CPC Class Codes: A63B 53/04 Heads
• 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: B29C 44/18 Filling preformed cavities B29C44/1204 takes precedence
• CPC Class Codes: B29C 45/0053 combined with a final operation, e.g. shaping injection-compression moulding B29C45/561
• CPC Class Codes: B29C 45/14065 Positioning or centering articles in the mould
• CPC Class Codes: B29C 45/4421 using expansible or collapsible cores
• CPC Class Codes: B29K 2077/00 Use of PA, i.e. polyamides, e.g. polyesteramides or derivatives thereof, as moulding material
• CPC Class Codes: B29K 2105/12 of short lengths, e.g. chopped filaments, staple fibres or bristles
• CPC Class Codes: B29K 2277/10 Aromatic polyamides [Polyaramides] or derivatives thereof
• CPC Class Codes: B29L 2031/5227 Clubs
• CPC Class Codes: Y10S 273/23 High modulus filaments

Abstract

A method of producing a wood type golf club head which comprises molding and curing integrally an outer shell portion of a head main body having a hollow portion thereinside and equipped with a recess on at least one of the toe, back and heel sides thereof facing the hollow portion, from a synthetic resin as a main material, fixing a weight member having an adjustable weight into the or each recess, packing a core member into the hollow portion, and fitting a sole plate to a sole portion, and such a wood type golf club produced.

Claims

1. A wood type golf club head comprising a head main body, said body having an outer shell portion, said outer shell portion being molded from a synthetic resin containing reinforcing fibers and having top and bottom sides, face and back sides and toe and heel sides and a hollow portion inside of and accessible from the bottom side thereof, at least one weight member buried in a recess in said hollow portion adjacent at least one of said toe, heel and back sides, a surface of said weight member facing said hollow portion and said weight member not being exposed on an outside surface of the outer shell portion, a core member of a foamed material packed into said hollow portion so that a portion of the core member abuts said surface of said weight member and a sole plate affixed to the bottom side of said outer shell portion.

2. The wood type golf club head of claim 1, including at least two weight members, each buried in a recess in said hollow portion adjacent a toe, heel or back side thereof.

3. The wood type golf club head of claim 1, wherein said weight member has an engageable member on an outer surface thereof that is engaged with a portion of the outer shell portion when the weight member is buried in said recess.

4. The wood type golf club head of claim 1, wherein the weight member is made of a resin containing metal particles.