US4630826A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Golf club head
Assignee: Sony Corp
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Filing: 1984-07-31
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Granted: 1986-12-23
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Expires: 2004-07-31
Abstract
Abstract A golf club head having a face portion for striking a ball, the face portion being formed by a complex block comprising a plurality of ceramic plates and layers of glass fibers or carbon fibers laminated alternately. By such a complex construction, the sweet spot and the center of gravity distribution as well as the hardness and roughness of a ball striking surface can be changed as desired.
Inventors
- 👤 Susumu Nishigaki
- 👤 Akio Ohkoshi
- 👤 Torao Aozuka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:38
CPC Classifications
A; A63; A63B; A63B53/00; A63B53/04; A63B53/0416; A63B53/042; A63B53/0425; A63B53/0466; A63B60/00; B; B32; B32B; B32B9/00; B32B9/005; B32B9/04; B32B9/047; A63B2209/00; A63B2209/02; A63B53/047; B32B2262/00; B32B2262/10; B32B2262/101; B32B2262/106; Y; Y10; Y10S; Y10S273/00; Y10S273/07; Y10S273/23; Y10S428/00; Y10S428/902; Y10T; Y10T428/00; Y10T428/30
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
73 words
A golf club head having a striking face portion for striking a ball, said striking face portion being formed at least in part by a composite block comprising a plurality of layers of thin ceramic plates and a plurality of layers of thin glass fibers or carbon fibers laminated in alternating layers and united into an integral composite block by a thermoset resin impregnated into said layers of glass fibers or carbon fibers.
Claim 2
Dependent Claim
73 words
A golf club head having a striking face portion for striking a ball, said striking face portion being formed at least in part by a composite block comprising a plurality of layers of thin ceramic plates and a plurality of layers of thin glass fibers or carbon fibers laminated in alternating layers and united into an integral composite block by a thermoset resin impregnated into said layers of glass fibers or carbon fibers.
Claim 3
Dependent Claim
24 words
A golf club head according to claim 1, wherein the thickness of said ceramic plates is in the range from 0.2 to 1.0 mm.
Claim 4
Dependent Claim
27 words
A golf club head according to claim 1, wherein the diameter of said glass fibers or carbon fibers is in the range from 50 to 500 microns.
Claim 5
Dependent Claim
28 words
A golf club head according to claim 1, wherein a major surface of one of said ceramic plates forms part of a surface which strikes a striking ball.
Claim 6
Dependent Claim
32 words
A golf club head according to claim 1, wherein said plates and layers are so laminated that the edges of said plates and layers face to a surface which strikes the ball.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-12-22 | 1990-06-23 | 1990-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-12-22 | 1994-06-23 | 1994-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-12-22 | 1998-06-23 | 1998-12-23 | $7700.00 | Window Closed / Lapsed |