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US3979125A
Expired / Lapsed
US
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Golf putter practice device
Assignee: Individual
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Filing: 1975-11-10
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Granted: 1976-09-07
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Expires: 1995-11-10
Abstract
Abstract The head of a golf putter includes a reservoir for receipt of a fluid indicator and a plurality of separate divergent channels in communication therewith with one of said channels disposed normal to the ball striking face of the putter head so that, upon impact with a golf ball, the momentum imparted to the indicator fluid will cause it to flow forwardly into one or more of the channels dependent upon the orientation of the putter in relation to the ball upon impact therewith. The channels are further constructed so that the liquid indicator entering such channels is maintained therein so that a positive after-the-fact indication of the orientation of the putter face in regard to the ball upon impact is obtained. This enables corrections to be made to the putting stroke if the liquid indicator shows that during the previous putt, the club face was not properly positioned with respect to the ball upon impact.
Inventors
- 👤 William E. Lancellotti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:46
CPC Classifications
A; A63; A63B; A63B53/00; A63B53/04; A63B53/0487; A63B53/0437; A63B53/0441; A63B69/00; A63B69/36; A63B69/3676; A63B69/3685
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
130 words
A golf putter practice device comprising indication means including a reservoir for receipt of a liquid indicator, such as mercury, a plurality of separate liquid receiving channels converging with each other and communicating with said reservoir at adjacent points along an edge thereof, means operatively associating said reservoir and channels with the top surface of the putter wherein the reservoir is disposed toward the rear edge of the putter with the channels extending forwardly toward the ball-contacting face of the putter and being viewable by the golfer, wherein momentum transmitted to said liquid indicator during a putting stroke and upon impact with a ball serves to force liquid from said reservoir into said channels in varying amounts dependent upon the alignment of the putter face and the ball during impact.
Claim 2
Dependent Claim
130 words
A golf putter practice device comprising indication means including a reservoir for receipt of a liquid indicator, such as mercury, a plurality of separate liquid receiving channels converging with each other and communicating with said reservoir at adjacent points along an edge thereof, means operatively associating said reservoir and channels with the top surface of the putter wherein the reservoir is disposed toward the rear edge of the putter with the channels extending forwardly toward the ball-contacting face of the putter and being viewable by the golfer, wherein momentum transmitted to said liquid indicator during a putting stroke and upon impact with a ball serves to force liquid from said reservoir into said channels in varying amounts dependent upon the alignment of the putter face and the ball during impact.
Claim 3
Dependent Claim
25 words
The device set forth in claim 1 wherein wall portions separating said channels from each other terminate in a sharp edge at said common opening.
Claim 4
Dependent Claim
28 words
The device set forth in claim 1, said channels opening into said reservoir along a common plane disposed at a level substantially above the bottom of said reservoir.
Claim 5
Dependent Claim
26 words
The device set forth in claim 3, each said channel upwardly inclined from a closed terminus distal from said reservoir to a point proximate said reservoir.
Claim 6
Dependent Claim
41 words
The device set forth in claim 4, each channel terminus including a secondary reservoir for receipt of liquid indicator forced out of said primary reservoir and into one or more of said channels upon impact of said putter with said ball.
Claim 7
Dependent Claim
22 words
The device set forth in claim 3, each said channel opening into said reservoir along a gently rounded upwardly inclined wall thereof.
Claim 8
Dependent Claim
23 words
The device set forth in claim 6, said channels of rounded cross-sectional configuration and having a liquid contacting surface of low friction material.
Claim 9
Dependent Claim
16 words
The device set forth in claim 7, wherein said low friction material is a Teflon coating.
Claim 10
Dependent Claim
56 words
The device set forth in claim 1, wherein said channels include a primary indicating channel disposed normally to the ball contacting putter face and secondary indicating channels disposed on either side of said primary channel, said secondary channels outwardly diverging from said reservoir to terminal points laterally spaced from the terminal point of said primary channel.
Claim 11
Dependent Claim
26 words
The device set forth in claim 1, said device including a generally transparent cover member for enclosing open top portions of said reservoir and said channels.
Claim 12
Dependent Claim
21 words
The device set forth in claim 10, said reservoir having a vent to atmosphere for preventing vacuum buildup in said reservoir.
Claim 13
Dependent Claim
17 words
The device set forth in claim 1, said reservoir and said channels formed integrally in said putter.
Claim 14
Dependent Claim
26 words
The device set forth in claim 1, said reservoir and said channels disposed in a separate member and means for attaching said member to said putter.
Claim 15
Dependent Claim
31 words
The device set forth in claim 13, said attachment means comprising a plural-sided post downwardly extending from said member adapted to be received in a correspondingly shaped opening in the putter.
Claim 16
Dependent Claim
13 words
The device set forth in claim 13, said attachment means including magnetic means.
Claim 17
Dependent Claim
33 words
The device set forth in claim 15, said attachment means comprising a magnet attached to an underside of said member and receivable in a recess formed in the upper surface of said putter.
Claim 18
Dependent Claim
47 words
The device set forth in claim 13, said attachment means comprising a keyway upwardly extending from the top surface of said putter and longitudinally orientated normal to the face thereof, and a key attached to an underside of said member, said key slidably receivable in said keyway.
Claim 19
Dependent Claim
19 words
The device set forth in claim 1, including means connected therewith for selectively blocking observation of said indication means.
Claim 20
Dependent Claim
24 words
The device set forth in claim 18, said blocking means comprising a cover connected to said putter and movable between closed and open positions.
Claim 21
Dependent Claim
53 words
The device set forth in claim 1, said indication means comprising a separate member having top and bottom surfaces, said reservoir and said channels disposed in said top surface, and a recess in said putter for receiving said member, said member being selectively mountable with either said top or bottom surface upwardly disposed.
Claim 22
Dependent Claim
52 words
The device set forth in claim 20, said recess having a peripheral extent equal to that of said member for receipt thereof, and means including a peripheral groove in said depression and a peripheral rib on said member adapted for receipt on said groove for releasably maintaining said member in said recess.
Claim 23
Dependent Claim
45 words
The device set forth in claim 20, a pair of spaced finger-engageable ledges outwardly extending from the periphery of said member adjacent the top and bottom surfaces thereof, and a notch outwardly extending from the periphery of said recess, said ledges received in said notch.
Claim 24
Dependent Claim
38 words
The device set forth in claim 1, including a spirit level mounted on said putter, said spirit level observable during practice use of said putter to insure that the putter bottom is lying flat on the putting surface.
References Cited (Backward Citations)
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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) | 1979-09-07 | 1980-03-08 | 1980-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-07 | 1984-03-08 | 1984-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-07 | 1988-03-08 | 1988-09-07 | $7700.00 | Window Closed / Lapsed |