US4932661A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extensible exercise golf club
Assignee: Individual
•
Filing: 1989-06-27
•
Granted: 1990-06-12
•
Expires: 2009-06-27
Abstract
Abstract An extensible exercise golf club including a golf club shaft comprising a plurality of telescopic interlocking shaft lengths which function to extend from a collapsed position to a fully extended position as a result of the force generated by the swinging action of the golf club.
Inventors
- 👤 Richard W. Choi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:46
CPC Classifications
A; A63; A63B; A63B69/00; A63B69/36; A63B69/3623; A63B69/3632; A63B53/00; A63B60/00; A63B60/0085; A63B15/00; A63B15/005
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
136 words
An extensible exercise golf club which comprises: a club head member, a club handle member, and a club shaft member disposed therebetween, said club shaft member including: a plurality of telescopic tubular members which telescopically fit into each other for slidably extending from a telescopically collapsed position to a telescopically extended position, and channel and rail members disposed alternately on the inner and outer surfaces of adjacent telescopic tubular members, said rail member of one tubular member engaging said channel member of an adjacent tubular member for interlocking said adjacent telescopic tubular members together, whereby upon the swinging of the golf club, the club shaft member of the golf club is telescopically extended and guided by the engagement of the rail member within the channel member whereby the twisting of adjacent shaft members is effectively prevented.
Claim 2
Dependent Claim
136 words
An extensible exercise golf club which comprises: a club head member, a club handle member, and a club shaft member disposed therebetween, said club shaft member including: a plurality of telescopic tubular members which telescopically fit into each other for slidably extending from a telescopically collapsed position to a telescopically extended position, and channel and rail members disposed alternately on the inner and outer surfaces of adjacent telescopic tubular members, said rail member of one tubular member engaging said channel member of an adjacent tubular member for interlocking said adjacent telescopic tubular members together, whereby upon the swinging of the golf club, the club shaft member of the golf club is telescopically extended and guided by the engagement of the rail member within the channel member whereby the twisting of adjacent shaft members is effectively prevented.
Claim 3
Dependent Claim
62 words
The extensible exercise golf club of claim 1, wherein the plurality of the telescopic tubular members contain spring members which connect adjacent telescopic tubular members together, said spring members being biased to provide resistance against the slidable extension of the telescopic tubular members as they extend from a collapsed position to a fully extended position during the swinging of the golf club.
Claim 4
Dependent Claim
48 words
The extensible exercise golf club of claim 2, wherein the adjacent telescopic tubular member are in slidable and frictional engagement with each other so that the force of the swing overcomes the frictional engagement for fully extending the club shaft during the swing operation of the golf club.
Claim 5
Dependent Claim
21 words
The extensible exercise golf club of claim 1, wherein said plurality of telescopic tubular members is at least three in number.
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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) | 1993-06-11 | 1993-12-11 | 1994-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-06-11 | 1997-12-11 | 1998-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-06-11 | 2001-12-11 | 2002-06-12 | $7700.00 | Window Closed / Lapsed |