Patent US4964640A successfully refreshed from Google Patents.
US4964640A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Iron club head for golf
Assignee: Yamaha Corp
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Filing: 1990-01-30
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Granted: 1990-10-23
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Expires: 2010-01-30
Abstract
Abstract In construction of a composite type iron club head for golf having a fiber reinforcement, a synthetic resin backup is used as a substitute for the conventional ring for holding the fiber reinforcement in postion, thereby improving productivity and inertia moment of iron clud head. The fiber reinforcement, which can be of solid or hollow construction, and the synthetic resin back up are disposed in a recess provided on the side of the club head remote from the shooting surface. A mass can be adjustably imbedded in the synthetic resin backup so as to increase the inertial moment of the club head. A rise member extending upwardly from the sole face of the clud head can also be provided so that the center of gravity can be more easily adjusted. Undercuts can also be provided about the periphery of the recess to further facilitate the fixing of the fiber reinforcement within the recess and to provide additional fiber reinforcement in the peripheral sections of the club head. To further provide additional fiber reinforcement in the peripheral sections of the club head, a plano-concave surface can be provided on the side of the club head remove from the shooting surface.
Inventors
- 👤 Tatsuo Nakanishi
- 👤 Toyohiko Tadokoro
- 👤 Masaki Fujimura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:31
CPC Classifications
A; A63; A63B; A63B53/00; A63B53/04; A63B53/047; A63B60/00; A63B2209/00; A63B2209/02; A63B2209/023; A63B60/54
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
124 words
An iron-type golf club head comprising, a main body member having a front side and a rear side, said rear side including a sole portion and a recess, said front side including a wall section having an inner surface in communication with said recess and a shooting surface remote from said inner surface, said sole portion having an upwardly extending rear rise spaced from said inner surface of said wall section, said rear rise being of a predetermined length, width and weight to facilitate the adjustment of the center of gravity of the golf club head, a fiber reinforcement member disposed in said recess adjacent said inner surface of said wall section, and support means for fixing said fiber reinforcement member in said recess.
Claim 2
Dependent Claim
124 words
An iron-type golf club head comprising, a main body member having a front side and a rear side, said rear side including a sole portion and a recess, said front side including a wall section having an inner surface in communication with said recess and a shooting surface remote from said inner surface, said sole portion having an upwardly extending rear rise spaced from said inner surface of said wall section, said rear rise being of a predetermined length, width and weight to facilitate the adjustment of the center of gravity of the golf club head, a fiber reinforcement member disposed in said recess adjacent said inner surface of said wall section, and support means for fixing said fiber reinforcement member in said recess.
Claim 3
Dependent Claim
23 words
The iron-type golf club head claimed in claim 1, wherein said rear rise covers at least a portion of said fiber reinforcement member.
Claim 4
Dependent Claim
16 words
The iron-type golf club head claimed in claim 2, wherein said support means comprises synthetic resin.
Claim 5
Dependent Claim
29 words
The iron-type golf club head in claim 1, wherein at least a portion of said support means in said recess between said rear rise and said fiber reinforcement member.
Claim 6
Dependent Claim
16 words
The iron-type golf club head claimed in claim 4, wherein said support means comprises synthetic resin.
Claim 7
Dependent Claim
17 words
The iron-type golf club head in claim 1, wherein said fiber reinforcement member has a hollow construction.
Claim 8
Dependent Claim
35 words
The iron-type golf club head claimed in claim 6, wherein the hollow construction of the fiber reinforcement member has a profile which is substantially similar to the transverse cross-sectional profile of said main body member.
Claim 9
Dependent Claim
23 words
The iron-type golf club head claimed in claim 7, wherein said rear rise covers at least a portion of said fiber reinforcement member.
Claim 10
Dependent Claim
16 words
The iron-type golf club head claimed in claim 8, wherein said support means comprises synthetic resin.
Claim 11
Dependent Claim
30 words
The iron-type golf club head in claim 7, wherein at least a portion of said support means is in said recess between said rear rise and said fiber reinforcement member.
Claim 12
Dependent Claim
16 words
The iron-type golf club head claimed in claim 10, wherein said support means comprises synthetic resin.
Claim 13
Dependent Claim
86 words
An iron-type golf club head comprising, a main body member having a front side and a rear side, said rear side including a recess, said front side including a wall section having an inner surface in communication with said recess and a shooting surface remote from said inner surface, a fiber reinforcement member disposed in said recess adjacent said inner surface of said wall section, said fiber reinforcement member being of a hollow construction, and support means for fixing said fiber reinforcement member in said recess.
Claim 14
Dependent Claim
86 words
An iron-type golf club head comprising, a main body member having a front side and a rear side, said rear side including a recess, said front side including a wall section having an inner surface in communication with said recess and a shooting surface remote from said inner surface, a fiber reinforcement member disposed in said recess adjacent said inner surface of said wall section, said fiber reinforcement member being of a hollow construction, and support means for fixing said fiber reinforcement member in said recess.
Claim 15
Dependent Claim
31 words
The iron-type golf club head claimed in claim 12, wherein the hollow construction of the fiber reinforcement member is substantially similar to the transverse crosssectional profile of said main body member.
Claim 16
Dependent Claim
60 words
The iron-type golf club head claimed in claim 13, wherein said main body member includes a sole portion, said hole portion having an upwardly extending rear rise spaced from said inner surface of said wall section, said rear rise being of a predetermined length, width and weight to facilitate the adjustment of center of gravity of the golf club head.
Claim 17
Dependent Claim
61 words
The iron-type golf club head claimed in claim 12, wherein said main body member includes a sole portion, said sole portion having an upwardly extending rear rise spaced from said inner surface of said wall section, said rear rise being of a predetermined length, width and weight to facilitate the adjustment of the center of gravity of the golf club head.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-10-22 | 1994-04-23 | 1994-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-10-22 | 1998-04-23 | 1998-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-10-22 | 2002-04-23 | 2002-10-23 | $7700.00 | Window Closed / Lapsed |