US4809981A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Golf putter with alignment features
Assignee: Individual
•
Filing: 1987-06-25
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Granted: 1989-03-07
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Expires: 2007-06-25
Abstract
Abstract Golf putters with an alignment sight feature and an alignment ball section located at the club head end for achieving more accurate alignment and stroke of the putter. Toe and heel weighting within the ball section further contributes to greater putting accuracy. In the embodiments, a hemispherical ball section is mounted on a conforming blade and its face serves as the ball striking surface. In one embodiment, a bar mounted at the end of a shaft and an alignment stripe on the ball section form the alignment means, while in a second embodiment a curved metal bar is integrally formed with an overlying alignment bar to form an alignment sight.
Inventors
- 👤 Brian A. Doran
- 👤 Robert H. Redkey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:07
CPC Classifications
A; A63; A63B; A63B69/00; A63B69/36; A63B69/3676; A63B69/3685
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
102 words
A golf putter comprising: a shaft; a hemispherical ball section having a face for striking a golf ball; a blade formed about a lower portion of said hemispherical ball section, said blade extending on either side of said hemispherical ball section; an alignment marker means on said ball section for forming a linear alignment segment, said marker means following the hemispherical contour of said ball section and being disposed on a plane perpendicularly bisecting said hemispherical ball section; and a horizontal alignment bar segment extending perpendicular to said shaft and above said linear alignment segment for alignment with said linear alignment segment.
Claim 2
Dependent Claim
102 words
A golf putter comprising: a shaft; a hemispherical ball section having a face for striking a golf ball; a blade formed about a lower portion of said hemispherical ball section, said blade extending on either side of said hemispherical ball section; an alignment marker means on said ball section for forming a linear alignment segment, said marker means following the hemispherical contour of said ball section and being disposed on a plane perpendicularly bisecting said hemispherical ball section; and a horizontal alignment bar segment extending perpendicular to said shaft and above said linear alignment segment for alignment with said linear alignment segment.
Claim 3
Dependent Claim
21 words
The golf putter of claim 1 wherein said alignment marker means comprises a curved marker member formed above said ball section.
Claim 4
Dependent Claim
20 words
The golf putter of claim 1 wherein said alignment marker means comprises a stripe marker imprinted on said ball section.
Claim 5
Dependent Claim
16 words
The golf putter of claim 1 wherein said ball section includes internal heel and toe weights.
Claim 6
Dependent Claim
28 words
The golf putter of claim 4 wherein said internal heel and toe weights are disposed in the lower half of said hemispherical ball section, on opposite sides thereof.
Claim 7
Dependent Claim
48 words
The golf putter of claim 5 wherein said heel and toe weights each have an upper surface coincident with a horizontal plane bisecting said hemispherical ball section and are separated by a gap whose width in selected to determine the weight of the respective heel and toe weights.
Claim 8
Dependent Claim
192 words
A golf putter comprising: a shaft; a hemispherical ball section of the same size as a golf ball, dimpled to resemble a golf ball, and having a flat face for striking a golf ball; a blade formed about a lower portion of said hemispherical ball section, said blade extending on either side of said hemispherical ball section; an alignment marker means on said ball section for forming a linear alignment segment, said marker means following the hemispherical contour of said ball section and lying on a plane perpendicularly bisecting said hemispherical ball section; a horizontal alignment bar segment mounted to said shaft, perpendicular thereto, and above said linear alignment segment for alignment therewith; and internal heel and toe weights disposed in the lower half of said hemispherical ball section, on opposite sides thereof, said heel and toe weights each having an upper surface disposed such that a space comprising a quarter sphere lies above said heel and toe weights, said heel and toe weights being separated by a gap which is substantially rectangular in cross section and whose width is selected to determine the weight of the respective heel and toe weights.
Claim 9
Dependent Claim
192 words
A golf putter comprising: a shaft; a hemispherical ball section of the same size as a golf ball, dimpled to resemble a golf ball, and having a flat face for striking a golf ball; a blade formed about a lower portion of said hemispherical ball section, said blade extending on either side of said hemispherical ball section; an alignment marker means on said ball section for forming a linear alignment segment, said marker means following the hemispherical contour of said ball section and lying on a plane perpendicularly bisecting said hemispherical ball section; a horizontal alignment bar segment mounted to said shaft, perpendicular thereto, and above said linear alignment segment for alignment therewith; and internal heel and toe weights disposed in the lower half of said hemispherical ball section, on opposite sides thereof, said heel and toe weights each having an upper surface disposed such that a space comprising a quarter sphere lies above said heel and toe weights, said heel and toe weights being separated by a gap which is substantially rectangular in cross section and whose width is selected to determine the weight of the respective heel and toe weights.
Claim 10
Dependent Claim
21 words
The putter of claim 7 wherein the horizontal alignment bar has a first end mounted to one end of said shaft.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-03-06 | 1992-09-05 | 1993-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-03-06 | 1996-09-05 | 1997-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-03-06 | 2000-09-05 | 2001-03-07 | $7700.00 | Window Closed / Lapsed |