Golf club and method for manufacturing the same

• US 20050037861A1
• Filed: 07/19/2004
• Published: 02/17/2005
• Est. Priority Date: 08/12/2003
• Status: Active Grant

• Current Assignee: K.K. Endo Seisakusho
• Original Assignee: K.K. Endo Seisakusho
• Inventors: Kobayashi, Kenji
• Granted Patent: US 7,258,624 B2
• Time in Patent Office: Days
• US Class Current: 473/345
• 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 53/0416 Heads having an impact surface provided by a face insert
• CPC Class Codes: A63B 53/045 Strengthening ribs
• 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: A63B 60/006 Surfaces specially adapted for reducing air resistance

Abstract

The partial crown portion member comprises: the edge frame made from metal; and the shell body provided inside the edge frame and made from resin enveloping the inner edge of the edge frame. Inside the edge frame, the plural through-holes penetrating the front surface of the edge frame to the rear surface thereof are provided, while the shell body is inserted in the through-holes by casting manner. Since the front and rear surfaces of the inner edge of the edge frame, the through-holes are enveloped by casting manner, the adhesiveness thereof can be enhanced.

Claims

1. A golf club comprising:

a golf club head formed by an outer shell member so as to be hollow; and

a shaft connected to said golf club head,

wherein said outer shell member comprises;

an edge frame made from metal; and

a shell body made from resin and provided inwardly relative to said edge frame, said shell body enveloping both front and rear surfaces of an inner edge of said edge frame.

2. The golf club according to claim 1, wherein:

a plurality of through-holes penetrating from a front surface of said edge member to a rear surface thereof are provided on an inward portion of said edge member; and

said resin of said shell body is inserted into said plurality of through-holes.

3. The golf club according to claim 1, wherein said resin of said shell body has translucency.

4. The golf club according to claim 2, wherein said resin of said shell body has translucency.

7. The golf club according to claim 1, wherein:

said edge frame made from metal has a plurality of reinforced ribs provided in a reticular pattern; and

said shell body made from resin envelops said plurality of reinforced ribs by casting manner.

8. The golf club according to claim 7, wherein said plurality of reinforced ribs comprises:

a plurality of first reinforced ribs each perpendicular to a face of said golf club head; and

a plurality of second reinforced ribs each parallel to the face of said golf club head.

9. The golf club according to claim 1, wherein:

said edge frame made from metal has a plurality of first reinforced ribs each perpendicular to a face of said golf club head; and

said shell body made from resin envelops said plurality of first reinforced ribs by casting manner.

10. The golf club according to claim 1, wherein:

said edge frame made from metal has a plurality of second reinforced ribs each parallel to a face of said golf club head; and

said shell body made from resin envelops said plurality of first reinforced ribs by casting manner.

5. A method for manufacturing a golf club, said golf club comprising:

a golf club head formed by a plurality of partial outer shell members so as to be hollow; and

a shaft connected to said golf club head, each of said plurality of partial outer shell members comprising;

an edge frame made from metal; and

a shell body made from resin and provided inwardly relative to said edge frame, said shell body enveloping both front and rear surfaces of an inner edge of said edge frame,

wherein the method includes steps of;

inserting said edge frame into a pair of molds;

closing the pair of molds and filing molten resin of said shell body into the pair of closed molds; and

allowing said molten resin of said shell body to envelop an inner edge of said edge frame by casting manner so that said edge frame and said shell body are integrated with each other.

6. The method for manufacturing a golf club according to claim 5, wherein said method further includes steps of:

forming a first air gap between a front surface of the inner edge of said inserted edge frame and one of the mold facing the front surface of the inner edge of said inserted edge frame, when the pair of molds are closed;

forming a second air gap between a rear surface of the inner edge of said inserted edge frame and an other of the mold facing the rear surface of the inner edge of said inserted edge frame when the pair of molds are closed; and

filling said molten resin into said first and second air gaps.