US3762707A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Golf club with means within the shaft to rigidity the same upon impact
Assignee: Individual
•
Filing: 1971-05-17
•
Granted: 1973-10-02
•
Expires: 1991-05-17
Abstract
Abstract A golf club comprising a hollow shaft with a grip at one end and a club head attached to the other end. The shaft is made of a material to impart a predetermined flexibility to the shaft. The shaft is partially filled from the attachment end up to a predetermined distance within the shaft with a normally flexible plastic material, preferably a polysiloxane composition, that does not alter the predetermined shaft flexibility under static conditions but has the characteristic of increased rigidity upon impact thereby imparting rigidity to the flexible shaft at the time of impact of the club head with a golf ball.
Inventors
- 👤 S Santorelli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:28
CPC Classifications
A; A63; A63B; A63B53/00; A63B60/00; A63B53/002; Y; Y10; Y10S; Y10S273/00; Y10S273/29
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
100 words
A golf club comprising a hollow shaft with a grip at one end and a club head attached to the other end, said shaft being made of a material to impart a predetermined flexibility to said shaft, said shaft being partially filled from the attachment end up to a predetermined distance within the shaft with a normally flexible plastic material that does not alter said predetermined shaft flexibility under static conditions but has the characteristic of increased rigidity upon impact thereby imparting rigidity to said flexible shaft at the time of impact of said club head with a golf ball.
Claim 2
Dependent Claim
100 words
A golf club comprising a hollow shaft with a grip at one end and a club head attached to the other end, said shaft being made of a material to impart a predetermined flexibility to said shaft, said shaft being partially filled from the attachment end up to a predetermined distance within the shaft with a normally flexible plastic material that does not alter said predetermined shaft flexibility under static conditions but has the characteristic of increased rigidity upon impact thereby imparting rigidity to said flexible shaft at the time of impact of said club head with a golf ball.
Claim 3
Dependent Claim
25 words
A golf club according to claim 1 wherein said predetermined distance is from about eight inches to about one half the length of said shaft.
Claim 4
Dependent Claim
15 words
A golf club according to claim 1 wherein said plastic material is a polysiloxane composition.
Claim 5
Dependent Claim
33 words
A golf club according to claim 1 wherein said plastic material is a polysiloxane composition and said predetermined distance is from about eight inches to about one half the length of said shaft.
References Cited (Backward Citations)
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US1904750A
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Cited
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Cited
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Cited
US3083969A
Cited
US3265401A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-01 | 1977-04-02 | 1977-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-01 | 1981-04-02 | 1981-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-01 | 1985-04-02 | 1985-10-02 | $7700.00 | Window Closed / Lapsed |