Patent US4883275A successfully refreshed from Google Patents.
US4883275A
Expired / Lapsed
US
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Gold club iron head
Assignee: Union Planters Bank NA
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Filing: 1988-03-11
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Granted: 1989-11-28
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Expires: 2008-03-11
Abstract
Abstract An improved golf club iron head utilizes a composite structure of two different weight densities to transfer weight from the hosel and heel to the ball-impact region of the head. The disclosed embodiment comprises the combination of a lightweight composite material in the outlying structural portions of the head and a metallic insert to form the majority of the face, the sole and a backweight to improve weight distribution, utilization of material mass and control of the location of the center of gravity.
Inventors
- 👤 David D. Boone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:33
CPC Classifications
A; A63; A63B; A63B53/00; A63B53/04; A63B53/0433; A63B53/047; A63B60/00; A63B60/52; A63B2053/0491; A63B2209/00; A63B2209/02; A63B53/0416; A63B53/042
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
349 words
A golf club iron head (10) defining a hosel (14) coupled to a heel portion (16), said heel portion (16) being coupled to a toe portion (20) by a sole portion (18), and a ball striking surface (22) located between said toe (20) and heel (16), comprising: a first unitary member (15) defining the hosel (14), and a front portion of said heel (16) and a toe portion (21) of said head (10), said first unitary member (15) having a recess (37) formed between said heel (16) and toe (21) front portions defining a substantially planar surface, said planar surface of said recess (37) being substantially parallel to said striking surface of said head (10); a second unitary member (23) having (a) a front face member (27) defining said ball striking surface (22), (b) said sole (18), and (c) an integral backweight (32) extending upward from said sole (18) in rearwardly spaced parallel relation to said front face member (27) and defining a rear portion of said heel (30) and a rear portion of said toe (28), wherein said backweight is substantially continuous from said heel to said toe; said second unitary member (23) having a channel (34) formed between said backweight (32) and said front face member (27); said channel (34) receiving said first unitary member (15) and said recess (37) receiving said front face member (27) to form a contiguous frontal surface of said head (10), wherein said toe (21) and heel (16) portions of said first unitary member (15) are substantially coplanar with said ball striking surface (22) of said second unitary member (23), said front face member (27) having an upper edge substantially coplanar with an upper surface of said first unitary member (15); the weight density of said second unitary member (23) being greater than the weight density of said first unitary member (15); whereby said front face member (27) is matingly engaged within said recess (37) for locking engagement with said first unitary member (15) in a transverse direction with respect to a direction line substantially orthogonal to said ball striking surface (22).
Claim 2
Dependent Claim
349 words
A golf club iron head (10) defining a hosel (14) coupled to a heel portion (16), said heel portion (16) being coupled to a toe portion (20) by a sole portion (18), and a ball striking surface (22) located between said toe (20) and heel (16), comprising: a first unitary member (15) defining the hosel (14), and a front portion of said heel (16) and a toe portion (21) of said head (10), said first unitary member (15) having a recess (37) formed between said heel (16) and toe (21) front portions defining a substantially planar surface, said planar surface of said recess (37) being substantially parallel to said striking surface of said head (10); a second unitary member (23) having (a) a front face member (27) defining said ball striking surface (22), (b) said sole (18), and (c) an integral backweight (32) extending upward from said sole (18) in rearwardly spaced parallel relation to said front face member (27) and defining a rear portion of said heel (30) and a rear portion of said toe (28), wherein said backweight is substantially continuous from said heel to said toe; said second unitary member (23) having a channel (34) formed between said backweight (32) and said front face member (27); said channel (34) receiving said first unitary member (15) and said recess (37) receiving said front face member (27) to form a contiguous frontal surface of said head (10), wherein said toe (21) and heel (16) portions of said first unitary member (15) are substantially coplanar with said ball striking surface (22) of said second unitary member (23), said front face member (27) having an upper edge substantially coplanar with an upper surface of said first unitary member (15); the weight density of said second unitary member (23) being greater than the weight density of said first unitary member (15); whereby said front face member (27) is matingly engaged within said recess (37) for locking engagement with said first unitary member (15) in a transverse direction with respect to a direction line substantially orthogonal to said ball striking surface (22).
Claim 3
Dependent Claim
28 words
The golf club iron head recited in claim 1 wherein said first unitary member is made of epoxy-impregnated graphite and said second unitary member is made of steel.
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) | 1992-11-27 | 1993-05-29 | 1993-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-11-27 | 1997-05-29 | 1997-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-11-27 | 2001-05-29 | 2001-11-28 | $7700.00 | Window Closed / Lapsed |