Wood type golf club head

• US 5,193,811 A
• Filed: 11/01/1991
• Issued: 03/16/1993
• Est. Priority Date: 11/09/1990
• Status: Expired due to Fees

• Current Assignee: Yokohama Rubber Company Limited
• Original Assignee: Yokohama Rubber Company Limited
• Inventors: Onozato, Atsushi, Okumoto, Takaharu
• Primary Examiner(s): Millin, V.
• Assistant Examiner(s): Passaniti, Sebastiano
• Application Number:
  US07/786,747
• Time in Patent Office: 501 Days
• Field of Search: 273/167-175, 273/77 R, 273/77 A
• US Class Current: 473/349
• CPC Class Codes: A63B 53/04 Heads
• CPC Class Codes: A63B 53/0433 with special sole configurations
• 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: A63B 60/52 with slits

Abstract

A wood type golf club head comprising a head body consisting mainly of a synthetic resin, and a metallic sole plate bonded to the lower surface of the head body. The sole plate has on its surface to be bonded to the head body various members formed integrally therewith which include a hosel on the heel side, weights on the toe side and rear side, and a beam connecting the weights and the hosel.

Claims

1. A wood type golf club head comprising a head body molded primarily of a synthetic resin and having a top and bottom side, a front and a rear side and a toe and a heel side, said head body having an interior hollow space having inner surfaces in which a core member is packed and a metallic sole plate having a side bonded to the bottom side of said head body, said sole plate having an outer circumference and on said side to be bonded to said head body, a hosel portion adapted to cooperate with the heel side of said head body, and weights adapted to cooperate with both the toe side and the rear side of the head body, said hosel portion and weights being integrally connected together by a beam to form a frame member, wherein said weights have overhanging portions that project beyond the outer circumference of said sole plate and that are bonded to an inner surface of said hollow space in the interior of said head body when said plate is bonded to said head body.

2. The wood type golf club head of claim 1, wherein said frame member and sole plate are integrally cast as one piece.

3. The wood type golf club of claim 1, wherein said frame member is welded to said sole plate.

4. The wood type golf club of claim 1, wherein said beam of the frame member is formed in the shape of the letter "T" having three ends, the three ends of the T-shaped beam being connected to said hosel portion and said two weights.

5. The wood type golf club head of claim 1, wherein said sole plate and frame member are formed out of a metal selected from the group consisting of aluminum, titanium, magnesium and alloys of said metals.

6. The wood type golf club of claim 1, wherein said weights have at least one auxiliary weight fixed thereto.

7. The wood type golf club of claim 6, wherein said auxiliary weight is formed out of a metal selected from the group consisting of brass, lead, tungsten and zinc or a synthetic resin in which at least one of said metals is mixed.

8. The wood type golf club of claim 1, wherein said head body has a hosel portion formed integral therewith on the heel side of the head body adapted to cooperate with the hosel portion of the frame member to form a hosel for the club head when said sole plate is bonded to said head body, each hosel portion having an upper end, the distance from said sole plate to the upper end of said hosel portion formed integral with said frame member being smaller than the distance from said sole plate to the upper end of said hosel portion formed integral with said head body.