Patent US4230668A successfully refreshed from Google Patents.
US5000454A
Expired / Lapsed
US
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Golf club head
Assignee: Maruman Golf Co Ltd
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Filing: 1989-08-30
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Granted: 1991-03-19
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Expires: 2009-08-30
Abstract
Abstract A golf club head is disclosed which comprises a body made of a fiber-reinforced plastic having a back side, a club face, a sole and a hosel. A weight member having a nearly circular configuration is located adjacent to the inner circumference of the back side and at a position lower than the vertical centerline of the club face and a reinforcing member is located adjacent to the inside of the club face.
Inventors
- 👤 Takeo Soda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:24
CPC Classifications
A; A63; A63B; A63B53/00; A63B53/04; A63B53/0433; A63B53/0458; A63B53/0466; A63B60/00; A63B2209/00; A63B2209/02; A63B53/045; A63B53/0454
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
159 words
A golf club head comprising: (a) a body made of a fiber-reinforced plastic, said body including a hollow main body and a hosel, said hollow main body including a back side, a club face for hitting a golf ball, a sole, and an inner circumference, defined within said hollow main body said club face having a vertical center; (b) a weight means having a shape corresponding to said inner circumference at said back side of said hollow main body, wherein a rearmost portion of said weight means contacts said inner circumference at said back side of said hollow main body at a point lower than said vertical center of said club face; and (c) a reinforcing means connected to said weight means and positioned adjacent said inner circumference at said club face of said hollow main body, said weight means and said reinforcing means forming a single band which extends along said inner circumference of said hollow main body.
Claim 2
Dependent Claim
159 words
A golf club head comprising: (a) a body made of a fiber-reinforced plastic, said body including a hollow main body and a hosel, said hollow main body including a back side, a club face for hitting a golf ball, a sole, and an inner circumference, defined within said hollow main body said club face having a vertical center; (b) a weight means having a shape corresponding to said inner circumference at said back side of said hollow main body, wherein a rearmost portion of said weight means contacts said inner circumference at said back side of said hollow main body at a point lower than said vertical center of said club face; and (c) a reinforcing means connected to said weight means and positioned adjacent said inner circumference at said club face of said hollow main body, said weight means and said reinforcing means forming a single band which extends along said inner circumference of said hollow main body.
Claim 3
Dependent Claim
19 words
A golf club head according to claim 1, wherein said weight means is integrally connected with said reinforcing means.
Claim 4
Dependent Claim
26 words
A golf club head according to claim 1, wherein said sole of said hollow main body includes a sole plate made of a corrosion resistant material.
Claim 5
Dependent Claim
27 words
A golf club head according to claim 1, wherein said sole of said hollow main body includes a sole plate made of a wear-resistant, low friction material.
Claim 6
Dependent Claim
24 words
A golf club head according to claim 1, wherein said reinforcing means is a plate positioned adjacent said inner circumference at said club face.
Claim 7
Dependent Claim
23 words
A golf club head according to claim 5, wherein said weight means is coupled to a vertical center portion of said reinforcing means.
Claim 8
Dependent Claim
22 words
A golf club head according to claim 5, wherein said weight means is coupled to a bottom portion of said reinforcing means.
Claim 9
Dependent Claim
26 words
A golf club head according to claim 1, wherein said reinforcing means includes a plurality of rods positioned adjacent said inner circumference at said club face.
Claim 10
Dependent Claim
24 words
A golf club head according to claim 5, wherein said weight means includes a pillar means extending from said back side to said plate.
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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) | 1994-03-18 | 1994-09-17 | 1995-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-03-18 | 1998-09-17 | 1999-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-03-18 | 2002-09-17 | 2003-03-19 | $7700.00 | Window Closed / Lapsed |