US5016882A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metallic golf club head
Assignee: Yamaha Corp
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Filing: 1989-05-03
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Granted: 1991-05-21
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Expires: 2009-05-03
Abstract
Abstract In construction of a metallic gold club head having a rear side recess and a composite face situated in front of the rear side recess, the position of the composite face is biased towards the toe or heel depending on the number of the club head in order to assure stabilized course of travel traced by balls, increased distance of travel traced by balls and crisp feel at shot of balls.
Inventors
- 👤 Masaki Fujimura
- 👤 Toyohiko Tadokoro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:09
CPC Classifications
A; A63; A63B; A63B53/00; A63B53/04; A63B53/047; A63B60/00; A63B2209/00; A63B2209/02; A63B2209/023; A63B53/005
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
165 words
A metallic golf club head comprising a main body member having a front side, a rear side, a toe and a heel, said main body having a lateral axis extending between said toe and said heel and a predetermined central location centrally located between said toe and said heel along said lateral axis, 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, said recess having a predetermined length defined by two recess ends and a recess center between said recess ends, said recess center being in a predetermined laterally offset position with respect to said predetermined central location along said lateral axis thereby offsetting said recess laterally between said toe and said heel, said laterally offset position providing the optimum center of gravity of said golf club head so that a ball struck with said shooting surface will travel a substantially stabilized course.
Claim 2
Dependent Claim
165 words
A metallic golf club head comprising a main body member having a front side, a rear side, a toe and a heel, said main body having a lateral axis extending between said toe and said heel and a predetermined central location centrally located between said toe and said heel along said lateral axis, 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, said recess having a predetermined length defined by two recess ends and a recess center between said recess ends, said recess center being in a predetermined laterally offset position with respect to said predetermined central location along said lateral axis thereby offsetting said recess laterally between said toe and said heel, said laterally offset position providing the optimum center of gravity of said golf club head so that a ball struck with said shooting surface will travel a substantially stabilized course.
Claim 3
Dependent Claim
21 words
The golf club head claimed in claim 1, wherein said recess is offset towards said toe of said golf club head.
Claim 4
Dependent Claim
21 words
The golf club head claimed in claim 1, wherein said recess is offset towards said heel of said golf club head.
Claim 5
Dependent Claim
33 words
The golf club head claimed in claim 1, including a reinforcement member connected to said inner surface within said recess so as to form a composite front side of said golf club head.
Claim 6
Dependent Claim
17 words
The golf club head claimed in claim 4, wherein said reinforcement member is a fiber reinforced plastic.
Claim 7
Dependent Claim
18 words
The golf club head claimed in claim 4, wherein said reinforcement member is a carbon fiber reinforced plastic.
References Cited (Backward Citations)
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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) | 1994-05-20 | 1994-11-19 | 1995-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-05-20 | 1998-11-19 | 1999-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-05-20 | 2002-11-19 | 2003-05-21 | $7700.00 | Window Closed / Lapsed |