IP Library Granted Patent US 7,997,999
Granted Patent B2
US 7,997,999 · App. 12/553,977 · Granted Aug 16, 2011

Multi-piece golf club head with improved inertia

Assignee: Cobra Golf Incorporated
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Quick Facts
Patent No.
US 7,997,999
App. No.
12/553,977
Granted
Aug 16, 2011
Kind
B2
Abstract

A multi-piece iron-type golf club head with a substantial weight member is disclosed and claimed. The golf club head includes a plurality of body members. A first body member includes a face, a rear surface, and a hosel. A viscoelastic material is attached to the rear surface, and a second body member is attached to the viscoelastic material. The second body member, which may be a weight member, has a substantially larger mass than in known golf clubs. The viscoelastic member may form a substantial part of the club head. The club head may also have a recess located in a top portion thereof between the heel and the toe and extending toward the sole. A low-density insert may be positioned within the recess.

Claims (10)

1. An iron-type golf club head, comprising:

a first body member comprising a striking face, a hosel, a heel, a toe, and an uppermost portion adjacent to the striking face, extending between the hosel and the toe of the club head, defining a top line, a bottommost portion adjacent to the striking face, extending between the hosel and the toe of the club head, defining a sole;

the first body member further comprising a rear surface having a concave profile extending from a heel of the club head to a toe of the club head, wherein the concave profile extends to the sole;

the sole having a sole profile extending between the striking face and the rear surface;

a second body member coupled to the rear surface of the concave profile of the first body member;

a third body member disposed between the first and second body members;

wherein the second body member forms at least a portion of a sole of the golf club head;

wherein the concave profile is oriented in a front to back direction such that the concave profile widens in a continuous curve in a direction substantially parallel to the sole profile.

2. The golf club head of claim 1 , wherein the third body member comprises a viscoelastic material.

3. The golf club head of claim 1 , wherein the first body member forms at least a portion of a sole of the golf club head.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 17, 2010
From: ACUSHNET COMPANY
To: COBRA GOLF, INC
Reel/Frame 024090/0786 →
Continuity (5)
Continuation In Part 11808189 · Jun 7, 2007
Continuation In Part 11064965 · Feb 25, 2005
Continuation In Part 11266180 · Nov 4, 2005
Continuation In Part 10843622 · May 12, 2004
Related Publication 20100056297A1 · Mar 4, 2010