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US4871174A Expired / Lapsed US ⏱️ 0.0 years remaining

Golf club

Assignee: Maruman Golf Co Ltd
•
Filing: 1989-02-24
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Granted: 1989-10-03
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Expires: 2009-02-24
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Abstract

Abstract In a golf club for putting, the head of the club comprises a face plate having a hitting surface extending between opposite toe and heel sides of the head and a back surface extending substantially in parallel to the hitting surface. A pair of spaced rod-like bodies are fixed to the back surface of the face plate at the toe and heel sides of the head, respectively, and extend backward and in a direction perpendicular to the hitting surface of the face plate. A shaft-mounting body, for mounting the shaft thereon, is fixedly disposed between the rod-like bodies. A hosel member is attached to the top surface of said shaft-mounting body substantially at a center of the head, the hosel member extends upwardly from the shaft-mounting body to a position near a plane containing the face plate and is connected to the shaft at that position.

Inventors

  • 👤 Masashi Kobayashi

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-26 22:16
CPC Classifications
A; A63; A63B; A63B53/00; A63B53/04; A63B53/0487; A63B53/02; A63B53/021; A63B53/0416

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 265 words
A golf club having a head and a shaft, said head comprising: a thin face plate having a generally flat hitting surface extending between toe and heel sides of said head and a generally flat back surface extending substantially in parallel to said hitting surface; a pair of cylindrical bodies each having one end thereof fixed to said back surface of said face plate such that one of said pairs is fixed at a position adjacent to said toe side and the other is fixed at a position adjacent to said heel side of said face plate, said pair of cylindrical bodies extending backward in a direction perpendicular to said hitting surface of said face plate with a clearance between said pair of cylindrical bodies; a shaft-mounting body disposed between said pair of cylindrical bodies and fixed to at least one of said face plate and said pair of said cylindrical bodies such that a center of gravity of said head is in said shaft-mounting body; and a hosel member attached to said shaft-mounting body, said hosel member including a first portion extending upwardly from said shaft-mounting body, a second portion extending further upwardly from said first portion at a first angle with respect to said shaft-mounting body to a position near a plane containing said face plate and third portion being bent from said second portion at a second angle greater than said first angle, said second portion being connected to said shaft in a manner such that the axis of said shaft passes in front of said center of gravity of said head.
Claim 2
Dependent Claim 265 words
A golf club having a head and a shaft, said head comprising: a thin face plate having a generally flat hitting surface extending between toe and heel sides of said head and a generally flat back surface extending substantially in parallel to said hitting surface; a pair of cylindrical bodies each having one end thereof fixed to said back surface of said face plate such that one of said pairs is fixed at a position adjacent to said toe side and the other is fixed at a position adjacent to said heel side of said face plate, said pair of cylindrical bodies extending backward in a direction perpendicular to said hitting surface of said face plate with a clearance between said pair of cylindrical bodies; a shaft-mounting body disposed between said pair of cylindrical bodies and fixed to at least one of said face plate and said pair of said cylindrical bodies such that a center of gravity of said head is in said shaft-mounting body; and a hosel member attached to said shaft-mounting body, said hosel member including a first portion extending upwardly from said shaft-mounting body, a second portion extending further upwardly from said first portion at a first angle with respect to said shaft-mounting body to a position near a plane containing said face plate and third portion being bent from said second portion at a second angle greater than said first angle, said second portion being connected to said shaft in a manner such that the axis of said shaft passes in front of said center of gravity of said head.
Claim 3
Dependent Claim 34 words
A golf club according to claim 1, wherein said shaft-mounting body is fixed solely to said pair of cylindrical bodies and spaced form said back surface of said face plate leaving a clearance therebetween.
Claim 4
Dependent Claim 27 words
A golf club according to claim 1, wherein said shaft-mounting body is fixed to said pair of cylindrical bodies and said back surface of said face plate.
Claim 5
Dependent Claim 33 words
A golf club according to claim 3, wherein said shaft-mounting body extends in parallel to said pair of cylindrical bodies and has a length greater than those of said pair of cylindrical bodies.
Claim 6
Dependent Claim 29 words
A golf club according to claim 1, wherein said shaft-mounting body is fixed to said back surface of said face plate and spaced from said pair of cylindrical bodies.
Claim 7
Dependent Claim 39 words
A golf club according to any one of preceding claims 1 to 5, wherein said shaft-mounting body extends in parallel to said pair of cylindrical bodies and has a length less than those of said pair of cylindrical bodies.

References Cited (Backward Citations)

US2155830A Cited
US3516674A Cited
US3966210A Cited
US3966210B1 Cited
US3675923A Cited
US4010958A Cited
US4174110A Cited
US4390184A Cited
JPS5912916A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1992-10-02 1993-04-03 1993-10-03 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1996-10-02 1997-04-03 1997-10-03 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2000-10-02 2001-04-03 2001-10-03 $7700.00 Window Closed / Lapsed

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