US3687458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exercising and training type golf club
Assignee: MCLAUGHLIN RESEARCH CORP
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Filing: 1971-06-29
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Granted: 1972-08-29
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Expires: 1991-06-29
Abstract
Abstract The pivoted member at the upper end of the golf club shaft, which is biased outwardly by a compression spring, is adapted to be squeezed by the uppermost hand of the user and moved against the fixed semi-cylindrical portion of the shaft to provide a generally cylindrical grip portion. If the gripping force exerted by the golfer''s hand is not sufficient to compress the spring and force the pivoted member against the shaft, an awkward and uncomfortable grip portion is provided which prevents the golfer from swinging the club in the proper manner.
Inventors
- 👤 Wayne C Proctor Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:38
CPC Classifications
A; A63; A63B; A63B69/00; A63B69/36; A63B69/3623; A63B69/3632; A63B60/00; A63B60/46; A63B2060/464; A63B21/00; A63B21/02; A63B21/023; A63B21/04; A63B21/0407; A63B21/0421; A63B21/05; A63B2220/00; A63B2220/50; A63B2220/56; A63B23/00; A63B23/035; A63B23/12; A63B23/16
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
153 words
A golf club having an exercising and training grip portion at the outer end of the shaft of the club adapted to be grasped only by the uppermost hand of the user, said grip portion being split and comprising: a fixed member rigid with the outer end of the shaft; and elongated member lying along one side of said fixed member and forming therewith said grip portion; means pivotally connecting one end of said elongated member to said fixed member, said elongated member being pivotally movable between a first position with a surface thereof substantially co-extensive with and contiguous to an opposed surface of said fixed member and a second position with the free outer end of said elongated member spaced outwardly from said fixed member; and resilient means disposed between said elongated member and spaced from the pivotal connection, biasing the free end of said elongated member away from said fixed member.
Claim 2
Dependent Claim
153 words
A golf club having an exercising and training grip portion at the outer end of the shaft of the club adapted to be grasped only by the uppermost hand of the user, said grip portion being split and comprising: a fixed member rigid with the outer end of the shaft; and elongated member lying along one side of said fixed member and forming therewith said grip portion; means pivotally connecting one end of said elongated member to said fixed member, said elongated member being pivotally movable between a first position with a surface thereof substantially co-extensive with and contiguous to an opposed surface of said fixed member and a second position with the free outer end of said elongated member spaced outwardly from said fixed member; and resilient means disposed between said elongated member and spaced from the pivotal connection, biasing the free end of said elongated member away from said fixed member.
Claim 3
Dependent Claim
23 words
A golf club according to claim 1 including stop means for limiting the outward movement of the free end of said elongated member.
Claim 4
Dependent Claim
40 words
A golf club according to claim 2 in which the pivotal connection is spaced from the outer end of the fixed member and the free end of said elongated member is disposed adjacent the outer end of said fixed member.
Claim 5
Dependent Claim
34 words
A golf club according to claim 3 in which the elongated member is disposed on the upper side of the fixed member when the club is in the position for contacting a golf ball.
Claim 6
Dependent Claim
22 words
A golf club according to claim 4 in which the opposed surfaces of the fixed member and the elongated member are planar.
Claim 7
Dependent Claim
42 words
A golf club according to claim 5 in which said resilient means is a calibrated compression spring and a pair of opposed recesses are formed in said opposed planar surfaces, and the ends of said spring are seated in said opposed recesses.
Claim 8
Dependent Claim
50 words
A golf club according to claim 1 in which the elongated member comprises a body portion of generally semi-cylindrical configuration and the adjacent portion of the fixed member is of generally semi-cylindrical configuration and said grip portion is substantially cylindrical when said elongated member is pivoted to said first position.
References Cited (Backward Citations)
US1676270A
Cited
US1919221A
Cited
US2837334A
Cited
US3111322A
Cited
US3246895A
Cited
US3408075A
Cited
US3516669A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-29 | 1976-02-28 | 1976-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-29 | 1980-02-28 | 1980-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-29 | 1984-02-28 | 1984-08-29 | $7700.00 | Window Closed / Lapsed |