Patent US4811950A successfully refreshed from Google Patents.
US4811950A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Golf club head
Assignee: Maruman Golf Co Ltd
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Filing: 1987-07-27
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Granted: 1989-03-14
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Expires: 2007-07-27
Abstract
Abstract A head of a golf club comprises a head body having a front surface forming a hitting surface of the head for hitting a ball and a cut-off portion other than the front surface. A fitting member for adjusting at least the weight or weight-distribution of the head is made of a material different from that of the head body and fixed to the cut-off portion of the head body so as to form a part of the outer surface of the head other than the hitting surface thereof. A cushion member made of a resilient material is disposed between the head body and the fitting member, to prevent damage to the head body and separation of the fitting member from the head body caused by an impact force produced when a golf ball is hit by the golf club head.
Inventors
- 👤 Masashi Kobayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:50
CPC Classifications
A; A63; A63B; A63B53/00; A63B53/04; A63B53/0466; A63B53/047; A63B60/00; A63B53/0433; A63B60/54
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
142 words
A head of golf club comprising: a head body having a front surface forming a hitting surface of said head for hitting a ball, said head body also having a cut-off surface other than said front surface; a fitting member for adjusting a least the weight of said head, said fitting member being engagable with said cut-off surface of said head body to form an outer surface portion continuous with said head body but other than said front surface thereof, said fitting member being made of a material different from that of said head body; a cushion member made of a resilient material and disposed along an entire contact area between said cut-off surface of said head body and said fitting member; and means for securing said head body, cushion member and fitting member so as to form an integral club head.
Claim 2
Dependent Claim
142 words
A head of golf club comprising: a head body having a front surface forming a hitting surface of said head for hitting a ball, said head body also having a cut-off surface other than said front surface; a fitting member for adjusting a least the weight of said head, said fitting member being engagable with said cut-off surface of said head body to form an outer surface portion continuous with said head body but other than said front surface thereof, said fitting member being made of a material different from that of said head body; a cushion member made of a resilient material and disposed along an entire contact area between said cut-off surface of said head body and said fitting member; and means for securing said head body, cushion member and fitting member so as to form an integral club head.
Claim 3
Dependent Claim
46 words
A head of a golf club according to claim 1, wherein said head body has a cut-off surface formed at the back thereof, and said fitting member is made of metal and is fixed to said cut-off surface of said head body through said cushion member.
Claim 4
Dependent Claim
50 words
Ahead of a golf club according to claim 1, wherein said head body has a concavity formed at the sole thereof, and said fitting member is sole plate fitted into said concavity of said head body through said cushion member and fixed to said head body through said cushion member.
Claim 5
Dependent Claim
28 words
A head of golf bulb according to claim 2 or 3, wherein said head body has a shape similar to that of a conventional wood golf club head.
Claim 6
Dependent Claim
52 words
A head of a golf club according to claim I, wherein said head body has a concavity formed at the back thereof, and said fitting member is a back plate fitted into said concavity of said head body through said cushion member and fixed to said head body through said cushion member.
Claim 7
Dependent Claim
26 words
A head of golf club according to claim 5, wherein said head body has a shape similar to that of a conventional iron golf club head.
Claim 8
Dependent Claim
27 words
A head of a golf club according to claim 1, wherein said fitting member has a specific gravity which is greater than that of said head body.
Claim 9
Dependent Claim
29 words
A head of a golf club according to claim 1, wherein said cushion member is made of a silicon or urethane rubber, or fiber-reinforced resin reinforced by aramid fibers.
Claim 10
Dependent Claim
55 words
A head of a golf club according to claim 1, wherein said cushion member is fixed to said head body by an adhesive, and said fitting member is detachably fixed to said head body through said cushion member by screws extending through said fitting member and said cushion member and screwed into said head body.
Claim 11
Dependent Claim
27 words
A head of a golf club according to claim 1, wherein said fitting member and said cushion member are fixed to said head body by an adhesive.
Claim 12
Dependent Claim
64 words
A head of a golf club according to claim 1, wherein said cushion member is fixed to said head body by an adhesive, and said fitting member is fixed to said cushion member by an adhesive and also fixed to said head body through said cushion member by screws extending through said fitting member and said cushion member and screwed into said head body.
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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) | 1992-03-13 | 1992-09-12 | 1993-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-03-13 | 1996-09-12 | 1997-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-03-13 | 2000-09-12 | 2001-03-14 | $7700.00 | Window Closed / Lapsed |