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Patent US4422638A successfully refreshed from Google Patents.
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US4422638A Expired / Lapsed US ⏱️ 0.0 years remaining

Golf putter

Assignee: WM T Burnett and Co Inc
•
Filing: 1981-01-23
•
Granted: 1983-12-27
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Expires: 2001-01-23
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Abstract

Abstract A putter having a soft elastomeric striking face is described. The elastomer of the striking face has a hardness of at least 70 Durometer A and a hardness less than the hardness of a golf ball, and a high resiliency with controlled dampening. This hardness permits penetration of a golf ball into the elastomer when a ball is stroked with the elastomeric face, and the resiliency and controlled dampening causes the stroked ball to rebound from the face at a distance at least as great as the distance of the rebound of the ball when the ball is stroked with an equal force with a metal putter head of equal mass. Additionally, the resilient face imparts to the putter an improved sense of touch and feel without sacrificing distance. In FIGS. 1-5 of the drawing different species of the golf clubs of the present invention are disclosed. In FIG. 1 resilient face 6 extends across the front of the club head; in FIG. 2 the resilient face 6 is partially indented in the club head; in FIGS. 3 and 4 the resilient face 6 extends entirely around the club head; and in FIG. 5 the resilient face is in two sections, the forward section having a low rebound response and the rear section having a high rebound response. In FIG. 6, attachable resilient pads having different rebound characteristics are provided. The preferred resilient face is made of ADIPRENE 5418 which is a urethane elastomer manufactured and sold by the duPont Company.

Inventors

  • 👤 Richard B. C. Tucker

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-31 04:04
CPC Classifications
A; A63; A63B; A63B53/00; A63B53/007; A63B53/04; A63B53/0441; A63B53/0416; Y; Y10; Y10S; Y10S273/00; Y10S273/08

Claims Analysis

Total Claims: 12
Claim 1
Independent Claim 130 words
A putter comprising a shaft and a head having a striking face at one end of said shaft, said head having an elastomer on at least the striking area of said face of said head, said elastomer having a hardness of at least 70 Durometer A and a hardness less than the hardness of a golf ball and a high resiliency with controlled dampening, said hardness permitting penetration of a golf ball into said elastomer when a ball is stroked with said face, and said resiliency and controlled dampening causing said stroked ball to rebound from said face a distance at least as great as the distance of the rebound of said ball when said ball is stroked with an equal force with a metal putter head of equal mass.
Claim 2
Dependent Claim 130 words
A putter comprising a shaft and a head having a striking face at one end of said shaft, said head having an elastomer on at least the striking area of said face of said head, said elastomer having a hardness of at least 70 Durometer A and a hardness less than the hardness of a golf ball and a high resiliency with controlled dampening, said hardness permitting penetration of a golf ball into said elastomer when a ball is stroked with said face, and said resiliency and controlled dampening causing said stroked ball to rebound from said face a distance at least as great as the distance of the rebound of said ball when said ball is stroked with an equal force with a metal putter head of equal mass.
Claim 3
Dependent Claim 49 words
The putter of claim 1 wherein the resiliency and controlled dampening causes said stroked ball to rebound from said face a distance greater than the distance of the rebound of said ball when said ball is stroked with an equal force with a metal putter head of equal mass.
Claim 4
Dependent Claim 28 words
The putter of claim 1 wherein the elastomer has a hardness of at least 70 and below 90 Durometer A, and a reiliency of greater than 60% (Bashore).
Claim 5
Dependent Claim 12 words
The putter of claim 3 wherein the elastomer is a urethane polymer.
Claim 6
Dependent Claim 11 words
The putter of claim 4 wherein the elastomer is ADIPRENE 5418.
Claim 7
Dependent Claim 15 words
The putter of claim 1 wherein the elastomer face is bonded to a metal head.
Claim 8
Dependent Claim 17 words
The putter of claim 6 wherein the elastomer face is bonded to the metal head by casting.
Claim 9
Dependent Claim 17 words
The putter of claim 6 wherein the elastomer face is bonded to the metal head by molding.
Claim 10
Dependent Claim 15 words
The putter of claim 1 wherein the elastomer face is recessed into a metal head.
Claim 11
Dependent Claim 25 words
The putter of claim 1 wherein the elastomer is molded entirely around a metal head portion and said shaft is integral with said head portion.
Claim 12
Dependent Claim 58 words
The putter of claim 1 wherein said elastomer is at substantially the striking area of said face only and a second elastomer providing a second point of contact is on the toe of said face, said second elastomer having a slower rebound response thereby providing first and second points of contact on said face having different rebound characteristics.

References Cited (Backward Citations)

CA646942A Cited
GB190623691A Cited
GB191402003A Cited
US3211455A Cited
US3937474A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1986-12-26 1987-06-27 1987-12-27 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1990-12-26 1991-06-27 1991-12-27 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1994-12-26 1995-06-27 1995-12-27 $7700.00 Window Closed / Lapsed

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