Patent US4573686A successfully refreshed from Google Patents.
US4573686A
Expired / Lapsed
US
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Putting training device for golfers
Assignee: Individual
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Filing: 1983-10-26
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Granted: 1986-03-04
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Expires: 2003-10-26
Abstract
Abstract A training device for ball games includes a sloping surface having a forward edge flush with the floor or ground on which the training device is placed, and upstanding walls extending upward from the edges of the sloping surface except the forward edge thereof, the sloping surface including a simulated area of such a length that it can be estimated that a ball rolling upward on the sloping surface will never pass a target when the rolling ball stops up to the inner end of the simulated area.
Inventors
- 👤 Yoshiro Nakamats
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:42
CPC Classifications
A; A63; A63B; A63B63/00; A63B69/00; A63B69/36; A63B69/3676
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
171 words
A training device for golf games comprising, in combination: (a) an imperforate member providing a generally rectangular sloping surface (20) having a forward edge (21) adapted to be disposed flush with a supporting surface (3) for the device, (b) upstanding golf ball-confining wall means (22) extending upwardly from said sloping surface (20), (c) first visually-observable indicia disposed on said sloping surface (20) and forming an inverted generally U-shaped discrete ball-rolling zone (25) extending rearwardly from said forward edge (21), (d) said generally U-shaped zone having side portions spaced inwardly from adjacent said ball confining wall means (22) and disposed angularly thereto and converging to spaced terminus portions at said forward edge (21), (e) and second visually observable indicia (26) positioned on said U-shaped zone adjacent said forward edge (21) and extending between and of the same width as the distance between said spaced terminus portions of said generally U-shaped zone (25), (f) said second indicia (26) defining at least a portion of a simulated target hole for a golf ball (24).
Claim 2
Dependent Claim
171 words
A training device for golf games comprising, in combination: (a) an imperforate member providing a generally rectangular sloping surface (20) having a forward edge (21) adapted to be disposed flush with a supporting surface (3) for the device, (b) upstanding golf ball-confining wall means (22) extending upwardly from said sloping surface (20), (c) first visually-observable indicia disposed on said sloping surface (20) and forming an inverted generally U-shaped discrete ball-rolling zone (25) extending rearwardly from said forward edge (21), (d) said generally U-shaped zone having side portions spaced inwardly from adjacent said ball confining wall means (22) and disposed angularly thereto and converging to spaced terminus portions at said forward edge (21), (e) and second visually observable indicia (26) positioned on said U-shaped zone adjacent said forward edge (21) and extending between and of the same width as the distance between said spaced terminus portions of said generally U-shaped zone (25), (f) said second indicia (26) defining at least a portion of a simulated target hole for a golf ball (24).
Claim 3
Dependent Claim
30 words
The training device of claim 1 in which said second indicia (26) is shaped as a semi-circle having its center disposed on said forward edge (21) of said imperforate member.
Claim 4
Dependent Claim
78 words
The training device of claim 1 or 2 in which: (a) the inclination of said sloping surface (20) of said imperforate member is in the range of 25° to 35° when said training device is mounted on said supporting surface (3), (b) the length (L) of said ball-rolling zone (25) is 330 millimeters, (c) and said side portions of said U-shaped zone (25) are disposed at an angle of 4° to 10° from said adjacent wall means (22).
Claim 5
Dependent Claim
36 words
The training device as defined in claim 1, further including a runway on which the ball rolls, said runway being defined by a flat sheet which extends forwardly from the forward edge of said sloping surface.
Claim 6
Dependent Claim
19 words
The training device as defined in claim 4 wherein said runway is inclined transversely relative to the length thereof.
Claim 7
Dependent Claim
24 words
The training device as defined in claim 1, wherein said first indicia is printed on a sheet which is applied to said sloping surface.
Claim 8
Dependent Claim
20 words
The training device as defined in claim 1, wherein said first indicia is an image projected on said sloping surface.
References Cited (Backward Citations)
US1689475A
Cited
US3561765A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-03-03 | 1989-09-02 | 1990-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-03-03 | 1993-09-02 | 1994-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-03-03 | 1997-09-02 | 1998-03-04 | $7700.00 | Window Closed / Lapsed |