Golf club head with variable energy absorption

• US 6,302,807 B1
• Filed: 06/01/1999
• Issued: 10/16/2001
• Est. Priority Date: 06/01/1999
• Status: Expired due to Term

• Current Assignee: John W. Rohrer
• Original Assignee: John W. Rohrer
• Inventors: Rohrer, John W.
• Primary Examiner(s): Passaniti, Sebastiano
• Application Number:
  US09/323,744
• Time in Patent Office: 868 Days
• Field of Search: 473/324, 473/329, 473/330, 473/331, 473/332, 473/333, 473/347, 473/348, 473/349, 473/350, 473/342, 473/340, 473/219, 473/226, 473/236, 473/282, 473/238
• US Class Current: 473/329
• CPC Class Codes: A63B 2209/00 Characteristics of used materials
• CPC Class Codes: A63B 53/0416 Heads having an impact surface provided by a face insert
• CPC Class Codes: A63B 53/0425 the face insert comprising two or more different materials
• CPC Class Codes: A63B 53/0487 for putters A63B53/065 takes precedence
• CPC Class Codes: A63B 60/00 Details or accessories of golf clubs, bats, rackets or the like
• CPC Class Codes: A63B 60/54 with means for damping vibrations

Abstract

Disclosed is a golf club head, preferably a putterhead, comprising a striking face with an intended strikepoint, and a variable energy absorbing means incorporated such that maximum energy is absorbed when a golf ball is struck on the intended strikepoint and progressively less energy is absorbed as the ball is struck on the striking face at distances incrementally remote from the intended strikepoint along a horizontal axis. In preferred embodiments, the energy absorbing elements are comprised of a plurality of adjacent viscoelastic elements of predetermined and varying energy absorption. The adjacent viscoelastic elements are arranged such that energy absorption is greatest at the intended strikepoint, the plurality of adjacent viscoelastic elements cooperating to reduce the variance of, and optimally to equalize, the distance a golf ball travels when struck at the intended strikepoint, or points on the striking face remote from the intended strikepoint, with an otherwise identical stroke.

Claims

1. A putterhead comprising a working section which absorbs energy in a variable manner, the working section containing a centrally located intended strikepoint on a striking face, and comprising a plurality of adjacent viscoelastic elements of predetermined and varying energy absorption, energy absorption being greatest at the intended strikepoint, the plurality of adjacent viscoelastic elements cooperating to equalize the distance a golf ball travels when struck at the intended strikepoint, or points on the striking face remote from the intended strikepoint, with an otherwise identical stroke.

2. The putterhead of claim 1 wherein the striking face comprises the surface of at least one element of the plurality of adjacent viscoelastic elements.

3. A putterhead of claim 2 wherein the rear boundary between the adjacent viscoelastic elements and a putterhead blank is either straightline or curvilinear.

4. The putterhead of claim 1 wherein the striking face is a face plate which is in communication with, and covers, the plurality of adjacent viscoelastic elements.

5. The putterhead of claim 4 wherein the face plate is produced from a material selected from the group consisting of metal, plastic and elastomer.

6. The putterhead of claim 5 wherein the metal is magnesium.

7. The putterhead of claim 5 wherein the face plate is produced from an elastomer which is substantially identical to an elastomeric component of the plurality of viscoelastic elements which is minimally energy absorbing.

8. The putterhead of claim 1 wherein the plurality of adjacent viscoelastic elements meet at a boundary which is straight line or curvilinear.

9. The putterhead of claim 8 wherein the straightline or curvalinear boundary between viscoelastic elements is not perpendicular to the striking face plate.

10. A putterhead of claim 1 wherein the rear boundary between the adjacent viscoelastic elements and a putterhead blank is either straightline or curvilinear.

11. A putterhead comprising a striking face with an intended strikepoint, and a variable energy absorbing means incorporated such that maximum energy is absorbed when a golf ball is struck on the intended strikepoint and progressively less energy is absorbed as the ball is struck on the striking face at distances incrementally remote from the intended strikepoint along a horizontal axis, the variable energy absorbing means comprising a plurality of vertically oriented striking elements, the major plane of the vertically oriented striking elements being oriented perpendicular to the striking face of the putterhead, the vertically oriented striking elements being insulated from communication with adjacent vertically oriented striking elements by one or more viscoelastic energy absorbing materials.

12. An golf club comprising a working section which absorbs energy in a variable manner, the working section containing a centrally located intended strikepoint on a striking face, and comprising a plurality of adjacent viscoelastic elements of predetermined energy absorption varying from a maximum at the intended strikepoint to a minimum at a point in spaced apart relation to the intended strikepoint, the plurality of adjacent viscoelastic elements cooperating to equalize the distance a golf ball travels when struck at the intended strikepoint, or points on the striking face remote from the intended strikepoint, with an otherwise identical stroke.

13. The golf club of claim 12 wherein the striking face comprises the surface of at least one element of the plurality of adjacent viscoelastic elements.

14. The golf club of claim 12 wherein the striking face is a face plate which is in communication with, and covers, the plurality of adjacent viscoelastic elements.

15. The golf club of claim 14 wherein the face plate is produced from a material selected from the group consisting of metal, plastic and elastomer.

16. The golf club of claim 15 wherein the metal is magnesium.

17. The golf club of claim 15 wherein the face plate is produced from an elastomer which is substantially identical to an elastomeric component of the plurality of viscoelastic elements which is minimally energy absorbing.

18. The golf club of claim 12 wherein the plurality of adjacent viscoelastic elements meet at a boundary which is straight line or curvilinear.

19. The golf club of claim 18 wherein the straightline or curvalinear boundary between viscoelastic elements is not perpendicular to the striking face plate.

20. The golf club of claim 12 wherein the rear boundary between the adjacent viscoelastic elements and an iron blank is either straightline or curvilinear.

21. A putterhead comprising a working section which absorbs energy in a variable manner, the working section containing a centrally located intended strikepoint on a striking face, and comprising a plurality of adjacent viscoelastic elements of predetermined and varying energy absorption, energy absorption being greatest at the intended strikepoint, the plurality of adjacent viscoelastic elements cooperating to reduce the variance of the distance a golf ball travels when struck at the intended strikepoint, or points on the striking face remote from the intended strikepoint, with an otherwise identical stroke.

22. The putterhead of claim 21 wherein the striking face comprises the surface of at least one element of the plurality of adjacent viscoelastic elements.

23. The putterhead of claim 21 wherein the striking face is a face plate which is in communication with, and covers, the plurality of adjacent viscoelastic elements.

24. The putterhead of claim 23 wherein the face plate is produced from a material selected from the group consisting of metal, plastic and elastomer.

25. The putterhead of claim 24 wherein the metal is magnesium.

26. The putterhead of claim 24 wherein the face plate is produced from an elastomer which is substantially identical to an elastomeric component of the plurality of viscoelastic elements which is minimally energy absorbing.

27. The putterhead of claim 21 wherein the plurality of adjacent viscoelastic elements meet at a boundary which is straight line or curvilinear.

28. The putterhead of claim 27 wherein the straightline or curvalinear boundary between viscoelastic elements is not perpendicular to the striking face plate.