Golf putter head with interchangeable rebound control insert

• US 5,921,871 A
• Filed: 10/04/1997
• Issued: 07/13/1999
• Est. Priority Date: 05/02/1994
• Status: Expired due to Fees

• Current Assignee: Dale Fisher
• Original Assignee: Dale Perry Fisher
• Inventors: Fisher, Dale Perry
• Primary Examiner(s): Wong, Steven
• Assistant Examiner(s): BLAU, STEPHEN LUTHER
• Application Number:
  US08/944,080
• Time in Patent Office: 647 Days
• Field of Search: 473/340, 473/341, 473/342, 473/329
• US Class Current: 473/329
• CPC Class Codes: A63B 2209/00 Characteristics of used materials
• CPC Class Codes: A63B 2209/02 with reinforcing fibres, e.g. carbon, polyamide fibres
• 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 53/0487 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 60/50 with through-holes A63B60/18 takes precedence; for stringing purposes A63B49/00
• CPC Class Codes: A63B 60/62 specially adapted for clubs, e.g. head covers , connector means therefor

Abstract

A golf putter providing improved control of distance and direction of a golf ball impacted by the putter includes a resilient insert having a controlled rebound factor fitted into a wedge-shaped recess provided in the face of the putter head. The insert includes a front rebound control pad made of a resilient polymer material, and a rear backing plate releasably fastenable to the putter head. Intrinsic resiliency, thickness and hardness of the pad are chosen to yield in combination with the putter head body an overall, composite ball-impacting rebound factor that may be varied over a relatively wide range of rebound factors, which determine in a substantially linear way the roll distance of a ball impacted by the putter. The insert may be readily interchanged by a golfer with other inserts which provide higher or lower rebound factors, which may be chosen on days in which greens were slower or faster, respectively. Optionally, the hardness of an insert may be varied somewhat independently from rebound factor, thus achieving a desired ball-impacting feel as well as selected rebound factor.

Claims

1. A golf putter head comprising;

a. a head adapted to be attached to a shaft, said head including a body having a front face with an intended golf ball impact region, said front face of said body having formed therein a recess, and

b. at least one rebound control insert releasably adapted to fit in said recess of said body, said insert having at least a front portion thereof made of a resilient polymer and providing a composite rebound factor having a predetermined value selected from a first plurality of values, said composite rebound factor being determined by the resiliency or intrinsic rebound factor of the particular material of which said insert is made and by the thickness of said insert in combination with the characteristics of said body, said composite rebound factor values being related by a predetermined, repeatable relationship to the roll distance of a ball impacted by said putter, and

c. releasable fastening means for fastening said insert to said body.

2. The golf putter head of claim 1 wherein said insert is further defined as comprising in combination a front resilient pad comprising said front portion of said insert, and a backing plate fastened to said pad.

3. The golf putter head of claim 2 wherein said means for releasably attaching said insert to said putter head body comprises in combination at least one threaded hole in said backing plate, a through-hole provided through said body and aligned with said threaded-hole, and a headed screw received through said through-hole and threadably received by said threaded hole.

4. The putter head of claim 2 wherein said insert is further defined as having a front face substantially flush with the front face of said body.

5. The putter head of claim 1 wherein said composite rebound factor is further defined as being no more than about fifty percent.

6. The putter head of claim 5 wherein said hardness of said resilient portion of said insert is further defined as being between about Shore A 70 and Shore D 80.

7. The putter head of claim 6 wherein said polymer is further defined as being a polyurethane.

8. A golf putter head comprising;

a. a laterally elongated body having upper and lower wall surfaces and a generally flat front face with an intended region for impacting a golf ball, said face having formed therein a generally trapezoidally-shaped recess which extends through both said upper and lower wall surfaces of said body,

b. at least one rebound control insert having a plan view shape complementary to that of said recess, said insert being adapted to fit conformally within said recess and having at least a front portion thereof made of a resilient polymer, said insert providing a composite rebound factor, for a ball impacted by said head, of a predetermined value selected from a first plurality of values, said composite rebound factor being determined by the resiliency or intrinsic rebound factor of the particular material of which said insert is made and by the thickness of said insert in combination with the characteristics of said body, said composite rebound factor values being related by a predetermined, repeatable relationship to the roll distance of a ball impacted by said putter, and

c. releasable fastening means for fastening said insert to said body.

9. The golf putter head of claim 8 wherein said rebound control insert is further defined as comprising in combination at least one resilient pad, and a backing plate fastened to said pad, said pad and backing plate both having a plan-view shape complementary to the plan view shape of said recess in said face of said putter head body.

10. The golf putter head of claim 9 wherein said releasable fastening means is further defined as comprising in combination a pair of laterally spaced apart threaded holes which penetrate the rear surface of said backing plate, a pair of through-holes provided through said body and aligned with said threaded holes, and a pair of headed screws received individually through said through-holes and tightened onto said threaded holes.

11. The putter head of claim 9 wherein said resilient pad of said insert is further defined as comprising in combination a laminated stack of polymer inserts including said first polymer insert and at least one additional insert.

12. The putter head of claim 8 wherein said composite rebound factor is further defined as being no more than about fifty percent.

13. The putter head of claim 12 wherein said hardness of said resilient portion of said insert is further defined as being between about Shore A70 and Shore D80.

14. The putter head of claim 13 wherein said polymer is further defined as being a polyurethane.