Patent US3801108A successfully refreshed from Google Patents.
US3801108A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Golfer{40 s wrist-release detector
Assignee: Individual
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Filing: 1973-02-28
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Granted: 1974-04-02
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Expires: 1993-02-28
Abstract
Abstract A device for measuring relatively, the point at which a golfer releases the cock of his wrists in his downswing, so that judgement can be made whether his release is premature thus having an adverse effect on his swing. It is a device for use by golfers in training to detect wrist movement through relative measurement of swing radius. The device may include a mat having indicia thereon for properly positioning a golfer relative one or more horizontally extending light beams adapted to function as detectors. If the golfer keeps his wrists fully cocked until after the clubhead passes a selected point, the radius of the circular path of the clubhead will remain small enough for the clubhead to pass inside a light beam, without triggering an alarm associated with the beam.
Inventors
- 👤 G Murray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:09
CPC Classifications
A; A63; A63B; A63B69/00; A63B69/36; A63B69/3614; A63B2220/00; A63B2220/80; A63B2220/805
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
134 words
Apparatus for detecting the locus of a golf clubhead in a golfer''s swing in the act of swinging to hit a ball which comprises source of radiation and detector thereof established in geometric relation to a golfer so that radiation is directed through the plane of the swing essentially in the area of the downswing in combination with a mat and means on said mat for measuring distance from golfer''s position to said line of radiation so that golfer in his downswing maintains a swing radius limited by the line of radiation and his own position so if said limited swing radius be exceeded clubhead will pass through said line of radiation developing a signal for the golfer so that comparison may be made between distance measured and an ideal distance preselected by golfer.
Claim 2
Dependent Claim
134 words
Apparatus for detecting the locus of a golf clubhead in a golfer''s swing in the act of swinging to hit a ball which comprises source of radiation and detector thereof established in geometric relation to a golfer so that radiation is directed through the plane of the swing essentially in the area of the downswing in combination with a mat and means on said mat for measuring distance from golfer''s position to said line of radiation so that golfer in his downswing maintains a swing radius limited by the line of radiation and his own position so if said limited swing radius be exceeded clubhead will pass through said line of radiation developing a signal for the golfer so that comparison may be made between distance measured and an ideal distance preselected by golfer.
Claim 3
Dependent Claim
36 words
Apparatus in accOrdance with claim 1 including a plurality of beams to detect extent to which radius of golfer''s swing exceeds the limit set by his own position and the beam closest to his own position.
Claim 4
Dependent Claim
54 words
Apparatus in accordance with claim 1 which comprises a pair of stanchions one including illuminating means and means for defining a beam of said illumination the other carrying a detecting means and means for activating a signal coming from detecting the illumination, said stanchions being adjustable in height and in relation to said unit.
Claim 5
Dependent Claim
13 words
Apparatus in accordance with claim 3 in which the illumination is visible light.
Claim 6
Independent Claim
138 words
An apparatus for detecting the locus of a golf clubhead in a golfer''s swing in the act of swinging to hit a ball which comprises, a mat adapted to be placed on the ground said mat being rectangular in form and carrying indicia thereon to define positions, stanchions at two corners of said mat at the ends of one side thereof said stanchions respectively carrying a source of light and a detector therefor said stanchions being established at corners of said mat to define by means of a beam of light a line parallel to the mat over a defined point at the end thereof, a line on said mat representing an idealized center for a golfer''s club in midswing coordinated to permit positioning the golfer ideally with respect to said detection beam, his ball, and his target.
Claim 7
Independent Claim
138 words
An apparatus for detecting the locus of a golf clubhead in a golfer''s swing in the act of swinging to hit a ball which comprises, a mat adapted to be placed on the ground said mat being rectangular in form and carrying indicia thereon to define positions, stanchions at two corners of said mat at the ends of one side thereof said stanchions respectively carrying a source of light and a detector therefor said stanchions being established at corners of said mat to define by means of a beam of light a line parallel to the mat over a defined point at the end thereof, a line on said mat representing an idealized center for a golfer''s club in midswing coordinated to permit positioning the golfer ideally with respect to said detection beam, his ball, and his target.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-04-01 | 1977-10-01 | 1978-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-01 | 1981-10-01 | 1982-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-01 | 1985-10-01 | 1986-04-02 | $7700.00 | Window Closed / Lapsed |