Golf putter head and golf putter including the same

• US 7,387,580 B2
• Filed: 10/20/2005
• Issued: 06/17/2008
• Est. Priority Date: 11/09/2004
• Status: Expired due to Fees

• Current Assignee: SRI Sports Limited (Sumitomo Rubber Industries Limited)
• Original Assignee: SRI Sports Limited (Sumitomo Rubber Industries Limited)
• Inventors: Hasegawa, Hiroshi
• Primary Examiner(s): Passaniti; Sebastiano
• Application Number:
  US11/253,762
• Publication Number:
  US 20060100030A1
• Time in Patent Office: 971 Days
• Field of Search: 473324-350, 473219-256, 473/313
• US Class Current: 473/340
• CPC Class Codes: A63B 2053/0491 with added weights, e.g. changeable, replaceable
• CPC Class Codes: A63B 2209/00 Characteristics of used materials
• CPC Class Codes: A63B 53/0408 characterised by specific dimensions, e.g. thickness
• CPC Class Codes: A63B 53/0412 Volume
• CPC Class Codes: A63B 53/0416 Heads having an impact surface provided by a face insert
• CPC Class Codes: A63B 53/0487 for putters A63B53/065 takes precedence
• CPC Class Codes: A63B 60/02 Ballast means for adjusting the centre of mass A63B60/24, A63B60/54 take precedence
• CPC Class Codes: A63B 60/54 with means for damping vibrations

Abstract

A golf putter head 1 includes a head body having a face surface, and a head rear portion affixed to a back side of the head body and having a greater specific gravity than that of the head body. Provided that S1 represents a cross-sectional area of the head body with respect to a cross-section taken at a boundary portion K between the head body and the head rear portion and along a plane parallel to the face surface, whereas S2 represents a cross-sectional area of the head rear portion with respect to a cross-section taken at the boundary portion K and along a plane parallel to the face surface, a value of (S2/S1) is 1.1 or more and 2.0 or less.

Claims

1. A golf putter head comprising:

a head body having a face surface, said head body including a body front portion including the face surface and extending in a toe-heel direction and a body rear portion extending in a face-back direction from a toe-heel center of a back side face of the body front portion, the body front portion and the body rear portion being formed in one piece; and

a head rear portion affixed to a back-side end of the body rear portion and having a greater specific gravity than that of the head body,

wherein provided that S1 represents a cross-sectional area of the head body with respect to a cross-section taken at a boundary portion between the body rear portion and the head rear portion and along a plane parallel to the face surface, whereas S2 represents a cross-sectional area of the head rear portion with respect to a cross-section taken at the boundary portion and along a plane parallel to the face surface, a value of (S2/S1) is 1.1 or more and 2.0 or less.

2. The golf putter head of claim 1, wherein provided that L1 represents a toe-heel length of the head body as determined at the boundary portion, whereas L2 represents a toe-heel length of the head rear portion as determined at the boundary portion, a value of(L2/L1) is 1.1 or more and 2.0 or less.

3. The golf putter head of claim 1, wherein provided that H1 represents a top-sole length of the head body as determined at the boundary portion, whereas H2 represents a top-sole length of the head rear portion as determined at the boundary portion, a value of (H2/H1) is 1.1 or more and 2.0 or less.

4. A golf putter comprising the golf putter head of claim 1.

5. The golf putter head of claim 1, wherein an entirety of the head rear portion is rearward of the back-side end of the body rear portion.