US4699383A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Club-head
Assignee: Maruman Golf Co Ltd
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Filing: 1986-03-18
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Granted: 1987-10-13
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Expires: 2006-03-18
Abstract
Abstract A club-head (10) for an iron golf club comprising a hitting portion constituted by a main body (11) made of fiber-reinforced plastic and a sole member (12) including a rib (15) made of metal, in which a plate-like back member (16) made of a heavy material such as a heavy metal is added to the main body (11) along or near the backside surface of the main body (11). This allows an improvement in the disposition of the center of gravity of the club-head and provides a wide selection of golf clubs suitable for the respective golfer.
Inventors
- 👤 Masashi Kobayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:27
CPC Classifications
A; A63; A63B; A63B53/00; A63B53/04; A63B53/0416; A63B53/047; A63B60/00; A63B2209/00; A63B2209/02; A63B53/0487
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
134 words
A club-head for a golf club including a hitting portion comprising a main body made of fiber-reinforced plastic and having a planar back side surface, a metal sole member integrally fixed to the main body along an underside of the main body, and a plate-like back member having a planar main surface and fixed to said hitting portion so that said planar main surface is substantially parallel to and close to said planar back side surface of said main body, said back member being made of heavy material and formed separately from said sole member, characterized in that said sole member is provided with a rib disposed in the lengthwise direction on an upperside of said sole member and is rigidly connected to a neck member of the club-head to form a one-piece member.
Claim 2
Dependent Claim
134 words
A club-head for a golf club including a hitting portion comprising a main body made of fiber-reinforced plastic and having a planar back side surface, a metal sole member integrally fixed to the main body along an underside of the main body, and a plate-like back member having a planar main surface and fixed to said hitting portion so that said planar main surface is substantially parallel to and close to said planar back side surface of said main body, said back member being made of heavy material and formed separately from said sole member, characterized in that said sole member is provided with a rib disposed in the lengthwise direction on an upperside of said sole member and is rigidly connected to a neck member of the club-head to form a one-piece member.
Claim 3
Dependent Claim
29 words
A club-head as defined by claim 1, wherein said back member is positioned in the interior of said main body so as to be covered by said main body.
Claim 4
Dependent Claim
30 words
A club-head as defined by claim 1, wherein said back member is attached on the back surface of said main body so as to be exposed outside said main body.
References Cited (Backward Citations)
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Cited
US1780625A
Cited
US1988043A
Cited
US3640534A
Cited
US4063737A
Cited
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Cited
US4540178A
Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-10-12 | 1991-04-13 | 1991-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-10-12 | 1995-04-13 | 1995-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-10-12 | 1999-04-13 | 1999-10-13 | $7700.00 | Window Closed / Lapsed |