FORCE FOCUSING GOLF CLUB

• US 3,817,522 A
• Filed: 02/20/1973
• Issued: 06/18/1974
• Est. Priority Date: 04/19/1971
• Status: Expired due to Term

• Current Assignee: Samuel P. Simmons
• Original Assignee: Samuel P. Simmons
• Inventors: Simmons, Samuel P.
• Primary Examiner(s): Oechsle, Anton O.
• Assistant Examiner(s): Apley, Richard J.
• Application Number:
  US05/333,665
• Time in Patent Office: 483 Days
• Field of Search: 273/77R,78,81R,167-175
• US Class Current: 473/332
• CPC Class Codes: A63B 2209/00 Characteristics of used materials
• 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 53/042 the face insert consisting of a material different from that of the head
• CPC Class Codes: A63B 53/0458 with non-uniform thickness of the impact face plate
• CPC Class Codes: A63B 53/0462 characterised by tapering 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: Y10S 273/03 Epoxy

Abstract

This is a golf club comprising a head and attached shaft wherein a pressure focusing means, such as a metal paraboloid reflector, is disposed in a filled recess to reflect shock waves caused by a golf ball impacting on the impact face of the head. The head may also include a gas-filled chamber adjacent to the side of the reflector opposite the impact face.

Claims

1. A golf club having a head, an impact face thereon, and an attached shaft, the combination comprising:

a pressure focusing metallic element disposed in said head, said focusing element having a concave inner surface defining a force focusing structure with an open end facing said impact face;

synthetic material in uniform contact with said inner surface and entirely and uniformly filling said inner surface forming and said impact face; and

a relatively thin-walled hollow ball disposed in said head adjacent to and on the side of said pressure focusing element opposite said impact face whereby pressure forces caused to propagate in said synthetic material inwardly from said impact face toward said inner surface and said hollow ball when a golf ball strikes said impact face are uniformly reflected by the action of said inner surface and said hollow ball and caused to propagete back through said synthetic material toward said impact face.

2. The golf club according to claim 1, wherein synthetic material is disposed between said hollow ball and said pressure focusing element.

3. The golf club according to claim 2, wherein a closable passageway is disposed in said head between said head between said hollow ball'"'"''"'"'s inner chamber and an outer surface of said head.