US4768787A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Golf club including high friction striking face
Assignee: Carbite Inc
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Filing: 1987-06-15
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Granted: 1988-09-06
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Expires: 2007-06-15
Abstract
Abstract A golf club provided with a metallic golf ball striking surface wherein the striking surface has hard particles embedded therein with portions of the particles protruding above the surface so as to provide greater frictional grip between the golf ball striking surface and the golf ball. The striking surface of the golf club may be treated by various techniques so that the hard particles become embedded in the metallic matrix thus formed on the surface of the golf ball striking surface, or a separate formed metallic composite may be metallurgically bonded to the golf club head in the area of its surface which will contain the hard particles embedded therein with portions protruding above the surface.
Inventors
- 👤 Chester S. Shira
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:49
CPC Classifications
A; A63; A63B; A63B53/00; A63B53/04; A63B53/0416; A63B53/042; A63B53/0445; A63B53/047; A63B2209/00; A63B2209/02; A63B2209/023; A63B60/00; A63B60/004
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
44 words
A golf club provided with a metallic flat golf ball striking surface, said golf ball striking surface including a metallic matrix thereon containing hard particles which are harder than said metallic matrix and wherein portions of said particles protrude above said metallic matrix surface.
Claim 2
Dependent Claim
44 words
A golf club provided with a metallic flat golf ball striking surface, said golf ball striking surface including a metallic matrix thereon containing hard particles which are harder than said metallic matrix and wherein portions of said particles protrude above said metallic matrix surface.
Claim 3
Dependent Claim
19 words
The golf club of claim 1 wherein said harder particles have sharp features protruding above said metallic matrix surface.
Claim 4
Dependent Claim
17 words
The golf club of claim 1 wherein said metallic matrix is metallurgically bonded to said golf club.
Claim 5
Dependent Claim
39 words
The golf club of claim 3 wherein said golf ball striking surface is provided with a composite of said softer metallic matrix material which is metallurgically bonded to said golf club and which in turn contains said harder particles.
Claim 6
Dependent Claim
32 words
The golf club of claim 3 wherein said softer metallic matrix material is bonded to the golf club ball striking surface and the harder particles are bonded into the metallic matrix material.
References Cited (Backward Citations)
US703519A
Cited
US1289553A
Cited
GB547946A
Cited
GB1062796A
Cited
US3989861A
Cited
JPS5226929A
Cited
US4667963A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-09-06 | 1992-03-07 | 1992-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-09-06 | 1996-03-07 | 1996-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-09-06 | 2000-03-07 | 2000-09-06 | $7700.00 | Window Closed / Lapsed |