Golf club head

• US 5,997,415 A
• Filed: 02/11/1997
• Issued: 12/07/1999
• Est. Priority Date: 02/11/1997
• Status: Expired due to Fees

• Current Assignee: Golfsmith Licensing LLC
• Original Assignee: Zevo Golf Co., Inc. (Dick's Sporting Goods Incorporated)
• Inventors: Wood, Donald C.
• Primary Examiner(s): Passaniti, Sebastiano
• Application Number:
  US08/798,634
• Time in Patent Office: 1,029 Days
• Field of Search: 473/324, 473/345, 473/346, 473/347, 473/348, 473/349, 473/350
• US Class Current: 473/346
• CPC Class Codes: A63B 2053/0491 with added weights, e.g. changeable, replaceable
• CPC Class Codes: A63B 2225/01 Special aerodynamic features, e.g. airfoil shapes, wings or air passages
• 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 53/0433 with special sole configurations
• CPC Class Codes: A63B 53/045 Strengthening ribs
• 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

An improved golf club head incorporating a lattice structure covered by a thin-walled body. The aerodynamically shaped golf club head has a lattice structure formed by an outer ring, curved longitudinal frame elements, and curved latitudinal frame elements. A generally flat shaped ball striking face is formed at one end of the lattice structure. The ball striking face is generally parallelogram shaped and results in a larger and more desirably oriented "sweet spot." The thin-walled body covering the lattice structure defines a cavity, and has a top, a bottom, a toe end, a heel end, and a tail end. The ball striking face extends between the top and the bottom of the thin-walled body at an angle with respect to the vertical. A hosel extends generally upwardly from the heel end of the thin-walled body. Alternative internal energy absorbing and distributing structures, in addition to the lattice structure, are also part of the invention.

Claims

1. A golf club head having a discretionary weight budget, comprising:

an internal energy absorbing structure for providing the load bearing function for the golf club head;

a substantially non-load bearing thin-walled skin covering over the energy absorbing structure for defining a cavity and having a top, a bottom, a curved toe end, a curved heel end, a tail end and a ball striking face extending between said top and said bottom at an angle with respect to the vertical, wherein said ball striking face is generally flat, the energy absorbing structure being internal to said cavity and extending between said curved toe end, said curved heel end, said tail end, and said ball striking face, wherein said internal energy absorbing structure absorbs forces encountered by said skin ball striking face throughout said structure and allows the discretionary weight budget of said golf club head to be discretionary distributed wherein said energy absorbing structure includes;

an outer ring having a generally elliptical peripheral shape flattened on one side, wherein said flattened side intersects said ball striking face and is integral thereto;

at least one longitudinal frame element coupled to said ball striking face perimeter and extending from said ball striking perimeter to a point on said outer ring which is opposite from said ball striking face; and

at least one latitudinal frame element having a frame element perimeter and a generally elliptical peripheral shape, said generally elliptical peripheral shape defining at least two sides and tow ends of said frame element perimeter, wherein ecah of said ends of said frame element perimeter is affixed to said outer ring at different locations, and wherein each of said sides attaches to at least one curved longitudinal frame element, and wherein said structure is an integral, unitary combination of said outer ring and said longitudinal and said latitudinal frame elements.

2. The golf club head recited in claim 1, wherein said energy absorbing structure includes at least one substantially horizontal structural member, wherein said member braces said ball striking face to prevent said face from permanently deforming when impacted by a golf ball.

3. The golf club head recited in claim 1, further comprising a hosel having a longitudinal axis extending generally upwardly from said heel end of said thin-walled skin.

4. The golf club head recited in claim 1, wherein said top of said thin-walled skin includes a top cover integral thereto.

5. The golf club head recited in claim 1, wherein said bottom further comprises a sole plate, wherein said sole plate is removably secured to said thin-walled skin.

6. The golf club head recited in claim 1, wherein said bottom further comprises at least one cover secured to said bottom.

7. The golf club head recited in claim 1, wherein said ball striking face is generally parallelogram shaped.

8. A golf club head having a discretionary weight budget, comprising:

a non-load bearing thin-walled skin defining a cavity and having a generally rounded top, a generally curved bottom, a curved toe end, a curved heel end, a tail end and a ball striking face extending between said generally rounded top and said generally curved bottom at an angle with respect to the vertical, wherein said ball striking face is generally flat;

a load-bearing energy absorbing structure internal to said cavity and extending between said curved toe end, said curved heel end, said tail end, and said ball striking face, wherein said energy absorbing structure absorbs forces encountered by said ball striking face throughout said structure and allows for discretionary distribution of said discretionary weight budget of said golf club head; and

a hosel having a longitudinal axis extending generally upwardly from said heel end of said skin to secure said golf club head to a golf club shaft wherein said energy absorbing structure includes;

an outer ring having a generally elliptical peripheral shape flattened on one side, wherein said flattened side intersects said ball striking face and is integral thereto;

at least one longitudinal frame element coupled to said ball striking face perimeter and extending from said ball striking face perimeter to a point on said outer ring which is opposite from said ball striking face; and

at least one latitudinal frame element having a frame element perimeter and a generally elliptical peripheral shape, said generally elliptical peripheral shape defining at least two sides and two ends of said frame element perimeter, wherein each of said ends of said frame element perimeter is affixed to said outer ring at different locations, and wherein each of said sides attaches to at least one curved longitudinal frame element, and wherein said structure is an integral, unitary combination of said outer ring and said longitudinal and said latitudinal frame elements.

9. The golf club head recited in claim 8, wherein said energy absorbing structure comprises at least one structural member, wherein said member braces said ball striking face to prevent said face from substantially deforming when impacted by golf ball.

10. The golf club head recited in claim 9, wherein said generally rounded top of said thin-walled skin includes a top cover integral thereto.

11. The golf club head recited in claim 8, wherein said bottom comprises a sole plate secured to said thin-walled skin.

12. The golf club head recited in claim 8, wherein said bottom further comprises at least one cover secured to said generally curved bottom. generally rounded top of said thin-walled skin includes a top cover integral thereto.

13. The golf club head recited in claim 8, wherein said ball striking face is generally parallelogram shaped.

14. A golf club head having a discretionary weight budget, comprising:

a load bearing energy absorbing means forming a cavity wherein said energy absorbing means comprises a frame element structure extending between a curved toe end, a curved heel end, a tail end, and a ball striking face, and wherein said energy absorbing means allows for discretionary distribution of said discretionary weight budget of said golf club head; and

a thin-walled skin covering formed over the frame element structure, the thin-walled skin covering being substantially non-load bearing, the thin-walled skin covering defining a cavity and having a top, a bottom, a curved toe end, a curved heel end, a tail end and a ball striking face extending between said top and said bottom at an angle with respect to the vertical, and wherein said ball striking face is generally flat wherein said energy absorbing means includes;

an outer ring having a generally elliptical peripheral shape flattened on one side, wherein said flattened side intersects said ball striking face and is integral thereto;

at least one longitudinal frame element coupled to said ball striking face perimeter and extending from said ball striking face perimeter to a point on said outer ring which is opposite from said ball striking face; and

at least one latitudinal frame element having a frame element perimeter and a generally elliptical peripheral shape, said generally elliptical peripheral shape defining at least two sides and two ends of said frame element perimeter, wherein each of said ends of said frame element perimeter is affixed to said outer ring at different locations, and wherein each of said sides attaches to at least one curved longitudinal frame element, and wherein said energy absorbing means is an integral, unitary combination of said outer ring and said longitudinal and said latitudinal frame elements.

15. The golf club head recited in claim 14, further comprising a hosel having a longitudinal axis extending generally upwardly from said heel end of said thin-walled skin covering.

16. The golf club head recited in claim 14, wherein said bottom includes a bottom plate intersecting said ball striking face.

17. The golf club head recited in claim 14, wherein said thin-walled skin covering is made of a semi-rigid material.

18. The golf club head recited in claim 14, wherein said thin-walled skin covering is made of a semi-rigid material.

19. The golf club head recited in claim 14, wherein said thin-walled skin covering includes a top cover integral thereto.

20. The golf club head recited in claim 14, wherein said bottom further comprises a sole plate secured to said thin-walled skin covering.

21. The golf club head recited in claim 14, wherein said bottom further comprises at least one cover secured to said thin-walled skin covering, wherein cover cooperates with said sole plate to form said bottom.

22. The golf club head recited in claim 14, wherein said ball striking face is generally parallelogram shaped.