Reinforced hollow metal golf club head

• US 4,511,145 A
• Filed: 07/18/1983
• Issued: 04/16/1985
• Est. Priority Date: 07/18/1983
• Status: Expired due to Term

• Current Assignee: Callaway Golf Company
• Original Assignee: Glenn H. Schmidt
• Inventors: Schmidt, Glenn H.
• Primary Examiner(s): Marlo, George J.
• Application Number:
  US06/514,975
• Time in Patent Office: 638 Days
• Field of Search: 273/167 H, 273/169, 273/167 J, 273/167 F, 273/170, 273/171, 273/172, 273/175
• US Class Current: 473/346
• CPC Class Codes: A63B 53/04 Heads
• CPC Class Codes: A63B 53/045 Strengthening ribs
• CPC Class Codes: A63B 53/0454 Strengthening ribs on the rear surface 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

Abstract

A hollow metal shell golf club head, has a ball striking front wall, a top wall, a bottom wall and longitudinally spaced toe and heel walls. The head is characterized by:

(a) said front wall having front side, and a rear side exposed to the hollow interior of the head,

(b) and a metallic ridge integral with said front wall and extending longitudinally and downwardly from a central region of the front wall and adjacent said rear side thereof to transfer ball impact loading to at least one of said toe and heel walls.

Claims

1. In a hollow metallic golf club head having a ball striking front wall, a top wall, a bottom wall, and longitudinally spaced toe and heel walls, the improvement comprising

(a) said front wall having a front side, and a rear side exposed to the hollow interior of the head,

(b) and a metallic ridge in the form of an arch integral with said front wall and extending longitudinally and downwardly adjacent said front wall from a central region of the front wall and adjacent said rear side thereof to transfer ball impact loading to said toe and heel walls,

(c) said ridge having the form of a rib with opposite end portions, and upper, rear and lower surfaces each of which is arched upwardly throughout the major lengthwise extent of the rib between said opposite end portions, said opposite end portions approaching said toe and heel walls increasing substantially in forward and rearward thickness, whereby the rib has compound arching configuration for impact load transfer to said toe and heel walls.

2. The improvement of claim 1 wherein said ridge extends everywhere adjacent said front wall.

3. The improvement of claim 2 wherein said ridge merges endwise with said head proximate the juncture of said bottom wall with each of the toe and heel walls, the top of the ridge located rearward of the sweet spot associated with the front wall.

4. The improvement of claim 1 wherein said bottom wall includes a sole plate welded to the head, and said ridge is everywhere spaced from said sole plate.

5. The improvement of claim 1 wherein said ridge has helical configuration.

6. The improvement of claim 1 including additional ribbing integral with said front wall and associated with said ridge.

7. The improvement of claim 1 wherein said ridge undulates along its length.