Golf club face shield

• US 5,141,231 A
• Filed: 12/14/1990
• Issued: 08/25/1992
• Est. Priority Date: 12/14/1990
• Status: Expired due to Fees

• Current Assignee: Elizabeth Ann Martin
• Original Assignee: Elizabeth Ann Martin
• Inventors: Cox, A. Paul
• Primary Examiner(s): Grieb, William H.
• Application Number:
  US07/627,268
• Time in Patent Office: 620 Days
• Field of Search: 273/173
• US Class Current: 473/330
• 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 53/0425 the face insert comprising two or more different materials
• 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 53/06 adjustable

Abstract

A shield is provided for covering the face of a golf club of the type known as a wood wherein the shield comprises a metallic plate, having the general shape and size to substantially cover a given golf club face; the shield may further comprise a bonding layer sandwiched between the metallic plate and the golf club face for filling voids therebetween and for imparting a cushioning and resilience effect. The shield may be attached to the face of the golf club either by the epoxy bonding layer itself, with adequate adhesive strength to retain the metallic shield, or by pinning devices such as screws, nails, or tacks penetrating through the metallic plate and into the club face. The shield can be of uniform thickness or it can have thickness gradient from one edge to the other for altering the directivity of the club. Specifically, it can have a top-to-sole gradient for changing loft characteristics or it can have a heel-to-toe gradient to counteract horizontal spin and thereby offset a slice or a hook tendency of the club.

Claims

1. A shield assembly for covering a face of a golf club which has a curved face with a bulge and roll, comprising:

a plate having a curved rear face with a shape adapted to approximate the bulge and roll and size of the face of the golf club; and

fastening means comprising a plurality of fasteners having retaining heads, the fasteners adapted to penetrate into the face of the golf club through the plate for securing the plate to the face of the golf club.

2. The shield assembly for covering a face of a golf club according to claim 1 and further comprising:

a bonding layer substantially covering the face of the club and sandwiched between the plate and the face of the golf club.

3. The shield assembly for covering a face of a golf club according to claim 2 wherein:

the bonding layer comprises a thermosetting resin.

4. The shield assembly for covering a face of a golf club according to claim 2 wherein:

the bonding layer comprises an epoxy resin prepared by reacting epichlorohydrin with a polyhydroxy compound in the presence of a catalyst.

5. The shield assembly for covering a face of a golf club according to claim 1 wherein:

the plate has a front face, a top edge and a sole edge, and wherein the front face comprises a plurality of lateral grooves substantially parallel to each other and to the sole edge of the plate for increasing friction on the contact surface.

6. The shield assembly for covering a face of a golf club according to claim 1 wherein:

the metallic plate has a top edge and a sole edge opposite the top edge, the metallic plate further comprising a thickness gradient of uniform change in thickness from the top edge to the sole edge for varying the loft of the face of the wooden golf club when the shield is affixed thereto.

7. The shield assembly for covering a face of a golf club according to claim 6 wherein:

the sole edge is thicker than the top edge for increasing the loft of the face of the golf club.

8. The shield assembly for covering a face of a golf club according to claim 6 wherein:

the top edge is thicker than the sole edge for decreasing the loft of the face of the golf club.

9. The shield assembly for covering a face of a golf club according to claim 1 wherein:

the plate further comprises a front face, a toe edge and a heel edge opposite the toe edge, the metallic plate further comprising a thickness gradient of a uniform change in thickness from the toe edge to the heel edge for varying an orientation of the front face relative to the face of the golf club when the shield is affixed thereto.

10. The shield assembly for covering a face of a golf club according to claim 9 wherein:

the toe edge is thicker than the heel edge for offsetting a tendency of the golf club to induce a slice into the flight path of a golf ball.

11. The shield assembly for covering a face of a golf club according to claim 9 wherein:

the heel edge is thicker than the toe edge for offsetting a tendency of the golf club to induce a hook into the flight path of a golf ball.

12. A shield assembly for covering a face of a golf club, the face of the golf club having a curved shape with a bulge and roll, the shield assembly comprising:

a plate having a shape adapted to approximate the shape and size of the face of the golf club and having a curved rear face adapted to approximate the bulge and roll of the face of the golf club;

a bonding layer located between the rear face of the plate and the face of the golf club, the bonding layer substantially covering the face of the golf club; and

fastening means for attaching the plate and the bonding layer to the face of the golf club.

13. The shield assembly for covering the face of a golf club according to claim 12 wherein:

the fastening means comprises a plurality of fasteners having retaining heads, the fasteners adapted to penetrate into the face of the golf club through the plate and the bonding layer.

14. The shield assembly for covering the face of a golf club according to claim 12 wherein:

the fastening means comprises adhesive characteristics of the bonding layer sufficient to bond the plate to the face.

15. An improved golf club comprising in combination:

a golf club known as a wood, the golf club having a head with a face which includes an insert having a plurality of parallel grooves formed therein, the face being curved and having a bulge and roll; and

a shield assembly for attaching to and covering the face and the insert of the golf club, the shield assembly further comprising;

a plate having a front face, a rear face, a top edge, a sole edge opposite the top edge, a toe edge, and a heel edge opposite the toe edge, the rear face having a curved shape adapted to approximate the bulge and roll and size of the face and insert of the golf club; and

a bonding layer of a nonmetallic material sandwiched between the rear face of the plate and the face of the golf club.

16. The improved golf club according to claim 15 wherein:

the plate further comprises a thickness gradient of uniformly changing thickness from the sole edge to the top edge for changing a vertical angle of the face of the golf club when the shield is affixed thereto for improving loft characteristics of the golf club.

17. The improved golf club according to claim 15 wherein:

the plate further comprises a thickness gradient of uniformly changing thickness from the toe edge to the heel edge for changing a horizontal angle of the face of the golf club when the shield is affixed thereto for improving hook and slice tendency characteristics of the golf club.

18. The improved golf club according to claim 15 wherein:

the bonding layer comprises an epoxy resin prepared by reacting epichlorohydrin with a polyhydroxy compound in the presence of a catalyst.

19. The improved golf club according to claim 15 wherein:

the bonding layer comprises a thermosetting resin.

20. The improved golf club according to claim 15 and further comprising:

a plurality of fasteners having retaining heads and adapted to penetrate into the face of the golf club through the plate and the bonding layer for securing the plate and the bonding layer to the face of the golf club.

21. A method for improving a golf club comprising:

providing a golf club of the type known as a wood to be improved, the golf club having a face containing a plurality of parallel grooves and a bulge and roll;

determining improvement characteristics to be made to the golf club, including changes to at least one or more of loft, hook and slice characteristics thereof and repair of damaged locations on a face of the golf club;

providing a plurality of shield assemblies for attaching to a face of golf clubs, each shield assembly comprising a plate having a curved rear face shaped to approximate the bulge and a roll of the face of the golf club, the plate further comprising a thickness gradient from one edge to an opposing edge for establishing a pre-determined angle of the face of the golf club when the shield is affixed thereto, the shield assembly further comprising a fastening means for attaching the plate to the face;

then

selecting one of the shield assemblies provided to achieve the determined improvement characteristics sought for the golf club;

then

securing the shield assembly to the face of the golf club, covering the grooves of the face of the golf club, and adjusting the shape of the shield assembly as installed for smoothness and appearance.

22. A method for manufacturing a new golf club comprising:

providing a blank head for a golf club commonly referred to as a wood;

the blank head having a prefabricated hosel and a curved face with a bulge and a roll;

determining intended hook, slice and loft characteristics for a finished golf club to be fabricated from the blank head;

installing a shaft for the golf club;

providing a plurality of shield assemblies for attaching to a face of a golf club, each shield assembly comprising a fastening means and plate having a curved rear face shaped to approximate the bulge and the roll of the blank head, the plate further comprising a thickness gradient from one edge to an opposing edge for establishing an angle of the face of the finished golf club when the shield is affixed thereto, the shield assembly further comprising a fastening means for attaching the plate to the face;

then

selecting one of the shield assemblies provided to achieve the determined characteristics sought for the gold club;

then

installing the shield assembly to the face of the golf club and adjusting the shape of the shield assembly as installed for smoothness and appearance.