Putter head

• US 7,473,188 B2
• Filed: 02/09/2007
• Issued: 01/06/2009
• Est. Priority Date: 04/17/2006
• Status: Expired due to Fees

• Current Assignee: SRI Sports Limited (Sumitomo Rubber Industries Limited)
• Original Assignee: SRI Sports Limited (Sumitomo Rubber Industries Limited)
• Inventors: Nishino, Takumi
• Primary Examiner(s): Kim; Gene
• Assistant Examiner(s): Hunter; Alvin A
• Application Number:
  US11/704,208
• Publication Number:
  US 20070243951A1
• Time in Patent Office: 697 Days
• Field of Search: None
• US Class Current: 473/340
• CPC Class Codes: A63B 53/0408 characterised by specific dimensions, e.g. thickness
• CPC Class Codes: A63B 53/042 the face insert consisting of a material different from that of the head
• CPC Class Codes: A63B 53/0487 for putters A63B53/065 takes precedence

Abstract

A head 2 has three regions, i.e., an anterior region Z positioned on the facemost side, a posterior region K positioned on the backmost side, and a joint region R positioned between the anterior region Z and the posterior region K, which are provided to divide the putter head equally in the face-to-back direction. The anterior region Z has an anterior thick part Z1 having a thickness of equal to or greater than 20 mm. The joint region R has a thin part 16 having a thickness of equal to or less than 7 mm. The posterior region K has a posterior thick part K1 having a thickness of greater than 7 mm. The joint region R has a full-width part 23 formed by making the full width of this joint region to correspond to the thin part 16. Provided that the length of the head 2 in the face-to-back direction is A1, the length of the full-width part 23 in the face-to-back direction is equal to or greater than (A1/6).

Claims

1. A putter head comprising three regions:

an anterior region positioned on the facemost side;

a posterior region positioned on the backmost side; and

a joint region positioned between the anterior region and the posterior region, which are provided to divide the putter head equally in the face-to-back direction,

said anterior region having an anterior thick part having a thickness of equal to or greater than 20 mm,

said joint region having a thin part having a thickness of equal to or less than 7 mm,

said posterior region having a posterior thick part having a thickness of greater than 7 mm,

said joint region having a full-width part formed by making the full width of this joint region to correspond to the thin part, and

provided that the length of the head in the face-to-back direction is A1, the length of the full-width part in the face-to-back direction being equal to or greater than (A1/6).

2. The putter head according to claim 1 wherein the length A1 of the head in the face-to-back direction is equal to or greater than 60 mm.

3. The putter head according to claim 1 wherein the entire joint region is the thin part.

4. The putter head according to claim 1 wherein maximum thickness T1 of the anterior region, maximum thickness T2 of the joint region, and maximum thickness T3 of the posterior region satisfy the relation:

T1>

T3>

T2.

5. The putter head according to claim 1 wherein maximum width B1 of the anterior region, maximum width B3 of the joint region, and maximum width B6 of the posterior region satisfy the relation:

B1>

B6>

B3.

6. The putter head according to claim 1 wherein the weight of the posterior region is greater than the weight of the joint region.