Golf club head

• US 5,899,821 A
• Filed: 09/15/1997
• Issued: 05/04/1999
• Est. Priority Date: 09/15/1997
• Status: Expired due to Fees

• Current Assignee: Chien Ting Precision Casting Co. Ltd., Tsai-Fu Hsu
• Original Assignee: Chien Ting Precision Casting Co. Ltd., Tsai-Fu Hsu
• Inventors: Chen, Kuang-Wei, Hsu, Tsai-Fu
• Primary Examiner(s): Passaniti, Sebastiano
• Application Number:
  US08/929,402
• Time in Patent Office: 596 Days
• Field of Search: 473/324, 473/329, 473/332, 473/349, 473/350, 473/345, 273/DIG. 14, 273/DIG. 23
• US Class Current: 473/332
• CPC Class Codes: A63B 53/04 Heads
• CPC Class Codes: A63B 53/047 iron-type
• CPC Class Codes: A63B 53/0475 with one or more enclosed cavities
• CPC Class Codes: A63B 60/00 Details or accessories of golf clubs, bats, rackets or the like
• CPC Class Codes: A63B 60/54 with means for damping vibrations

Abstract

A golf club head includes a head body having a front flat surface as a striking face and a hollow room formed behind the front surface and a rear cap. The rear cap is pushed in the hollow room contacting with an annular edge of the hollow room, fixedly closed on the opening of the hollow room, and welded together with the head body. Then liquid non-metal material is filled in a hollow pinched layer formed between the rear cap and the hollow room, becoming a buffer block after cooled. The buffer block has a proper softness and hardness, absorbing vibration of a ball to give stability to the golf club when the ball is hit by the golf club head.

Claims

1. A golf club head comprising a head body and a rear cap, said head body having a front flat surface formed with plural cut lines to make up a striking face for hitting a golf ball, and characterized by said head body being formed with a recessed hollow room behind said front surface, said hollow room having a tapered sectional profile, a stair shape and an annular projecting edge in an inner surface of said hollow room, said rear cap having a hole and complementary contour to fit closely in an opening of said hollow room and contacting said annular projecting edge of said hollow room, a hollow pinched layer formed between said rear cap and said hollow room after said rear cap is closed on said hollow room, liquid non-metal material being filled in said hollow pinched layer and becoming a solid buffer block after solidifying;

said striking face having a thickness between approximately 1.4 mm and 2 mm, said buffer block having a thickness between approximately 2.5 mm and 10 mm;

said buffer block being adapted to absorb vibration of said club head thereby enhancing the stability of the golf club and preventing harm in technique or injury to the user from incorrectly holding the golf club.

2. The golf club head as recited in claim 1, wherein when said rear cap is closed fixedly on said head body, said hole of said rear cap is located at the widest point with respect to said tapered sectional contour of said hollow room of said head body to facilitate the exhaustion of gas therethrough during the filling of said non-metal material into said pinched layer.

3. The golf club head as recited in claim 1, wherein after said rear cap is pushed tightly in said hollow room of said head body, said rear cap is welded fixedly with said head body by means of a welding process.

4. The golf club head as recited in claim 1, wherein said non-metal material filled in said pinched layer formed between said head body and said rear cap is rubber having predetermined softness and hardness characteristics.