US3989257A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Golf putter
Assignee: Individual
•
Filing: 1975-09-02
•
Granted: 1976-11-02
•
Expires: 1995-09-02
Abstract
Abstract A golf putter apparatus is provided having a putter head with a front driving face having convex, horizontal and vertical curves each approximating ellipses. A putter shaft is attached in the center of the rear of the putter head and a striking point indicator is located on top of the putter head so that striking a golf ball on the driving face of the putter head at the approximate indicated striking point will compensate for minute movements of a golfer's wrist.
Inventors
- 👤 Samuel J. Barr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 00:50
CPC Classifications
A; A63; A63B; A63B53/00; A63B53/04; A63B53/0487; A63B53/0441
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
110 words
A golf putter comprising: a putter head having a front driving face, and rear, top and bottom sides, said driving face having a substantially convex horizontal elliptical curve of extended focal length; said putter head driving face having a substantially convex vertical elliptical curve thereby forming a face of intersecting elliptical surfaces; a shaft attached to the rear side of said putter head behind said driving face; and a striking point indicator located on the top side of said putter head whereby striking a golf ball on the driving face of said putter head at the approximate indicator striking point will compensate for a slight wrist movement of the user.
Claim 2
Dependent Claim
110 words
A golf putter comprising: a putter head having a front driving face, and rear, top and bottom sides, said driving face having a substantially convex horizontal elliptical curve of extended focal length; said putter head driving face having a substantially convex vertical elliptical curve thereby forming a face of intersecting elliptical surfaces; a shaft attached to the rear side of said putter head behind said driving face; and a striking point indicator located on the top side of said putter head whereby striking a golf ball on the driving face of said putter head at the approximate indicator striking point will compensate for a slight wrist movement of the user.
Claim 3
Dependent Claim
42 words
A golf putter in accordance with claim 1 in which the shaft has a hooked curve on one end thereof with a protruding straight portion adjacent said hooked curved attached to the approximate center of the rear side of said putter head.
Claim 4
Dependent Claim
43 words
A golf putter in accordance with claim 2 in which the elongated axis of the protruding straight portion of said shaft entering the rear of said putter head is parallel with the striking point indicator on the top side of said putter head.
Claim 5
Dependent Claim
25 words
A golf putter in accordance with claim 3 in which said striking point indicator is a pointer etched into the top of the putter head.
Claim 6
Dependent Claim
26 words
A golf putter in accordance with claim 1 in which the angle of loft of the driving face of said putter head is approximately 6° .
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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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) | 1979-11-02 | 1980-05-03 | 1980-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-11-02 | 1984-05-03 | 1984-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-11-02 | 1988-05-03 | 1988-11-02 | $7700.00 | Window Closed / Lapsed |