Internal off-set hosel for a golf club head

• US 6,371,868 B1
• Filed: 04/13/2000
• Issued: 04/16/2002
• Est. Priority Date: 11/01/1999
• Status: Expired due to Fees

• Current Assignee: Callaway Golf Company
• Original Assignee: Callaway Golf Company
• Inventors: Galloway, J. Andrew, Hocknell, Alan, Helmstetter, Richard C., Aguinaldo, Homer E.
• Primary Examiner(s): Sewell, Paul T.
• Assistant Examiner(s): VARMA, SNEH K
• Application Number:
  US09/548,968
• Time in Patent Office: 733 Days
• Field of Search: 473/342, 473/345, 473/346, 473/349, 473/332, 473/290, 473/291, 473/324, 473/329
• US Class Current: 473/324
• 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 53/02 Joint structures between the head and the shaft
• CPC Class Codes: A63B 53/04 Heads
• 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 53/0433 with special sole configurations
• CPC Class Codes: A63B 53/0441 with visual indicators for aligning the golf club
• CPC Class Codes: A63B 53/0458 with non-uniform thickness of the impact face plate
• CPC Class Codes: A63B 53/0466 wood-type
• CPC Class Codes: A63B 60/00 Details or accessories of golf clubs, bats, rackets or the like
• CPC Class Codes: B21J 5/00 Methods for forging, hammering, or pressing for working sheet-metal or metal tubes, rods, or profiles B21D; for working wire B21F; Special equipment or accessories therefor
• CPC Class Codes: B21K 17/00 Making sport articles, e.g. skates
• CPC Class Codes: C22F 1/183 of titanium or alloys based thereon
• CPC Class Codes: C23F 1/00 Etching metallic material by chemical means manufacture of printing surfaces B41C; manufacture of printed circuits H05K
• CPC Class Codes: C23F 1/26 for etching refractory metals
• CPC Class Codes: Y10T 29/49826 Assembling or joining

Abstract

A golf club having an interior hosel that is disposed inward from a striking plate to allow for compliance of the striking plate during impact with a golf ball. The present invention also includes a method for producing the golf club in which the interior hosel is attached to a lateral extension of a face member. The lateral extension is connected to the striking plate. The striking plate is preferably composed of a forged titanium material.

Claims

1. A golf club head comprising:

a face member comprising

a striking plate for striking a golf ball having an exterior surface, an interior surface, and a perimeter, the striking plate extending from a heel section of the golf club head to a toe section of the golf club head,

a face extension extending laterally inward along the entire perimeter of the striking plate, the face extension having an upper portion, a lower portion opposite the upper portion, a heel wall in the heel section of the golf club head and substantially perpendicular to the face plate, and a toe wall in the toe section of the golf club head;

an interior hosel for receiving a shaft therethrough, the interior hosel attached to the upper portion of the face extension and the lower portion of the face extension, the entire interior hosel unattached to the striking plate and disposed inward from the striking plate from about 0.05 inch to 0.5 inch at a bottom end thereby allowing for greater flexibility of the striking plate during impact with a golf ball;

a crown member secured to the upper portion of the face extension along a substantially horizontal plane at a distance from about 0.2 inch to 1.0 inch from the striking plate; and

a sole member secured to the lower portion of the face extension along a substantially horizontal plane at a distance from about 0.2 inch to 1.0 inch from the face plate.

2. The golf club head according to claim 1 wherein the striking plate is composed of a forged titanium material.

3. The golf club head according to claim 1 wherein the striking plate of the face member has a thickness in the range of 0.010 inch to 0.250 inch, and has a coefficient of restitution of at least 0.83.

4. The golf club head according to claim 1 wherein the striking plate has concentric regions of varying thickness with the thickest region in the center.

5. The golf club head according to claim 1 wherein the striking plate comprises a central circular region having a base thickness, a first concentric region having a first thickness wherein the base thickness is greater than the first thickness, a second concentric region having a second thickness wherein the first thickness is greater than the second thickness, a third concentric region having a third thickness wherein the second thickness is greater than the third thickness, and a periphery region having a fourth thickness wherein the fourth thickness is less than the third thickness.

6. The golf club head according to claim 1 wherein the upper portion of the face extension has a hosel section extending about the interior hosel, the hosel section having a width greater than the entirety of the upper portion of the face extension.

7. The golf club head according to claim 1 wherein the lower portion of the face extension has a bore section extending about the interior hosel, the bore section having a width greater than the entirety of the lower portion of the face extension.

8. The golf club head according to claim 1 wherein the face extension of the face member further comprises a heel wall substantially perpendicular to the striking plate, the heel wall disposed in the heel section of the club head.

9. The golf club head according to claim 1 wherein the face extension of the face member further comprises a toe wall arcing inward from the striking plate, the toe wall disposed in the toe section of the club head.

10. The golf club head according to claim 1 wherein the face extension is non-planar.