US3833223A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Golf club assembly having interchangeable inner flex members
Assignee: Individual
•
Filing: 1973-07-09
•
Granted: 1974-09-03
•
Expires: 1993-07-09
Abstract
Abstract An adjustable shaft for golf clubs comprises a hollow elongated shaft fixed to a club head. The shaft is open at one end to receive an elongated flex member. The flex member is characterized by a predetermined degree of flexibility along its length to impart a specific reflex to the shaft along its length. Adjustability of flex along the club shaft enables the golfer to determine the degree of shaft flexibility to suit his specific requirements.
Inventors
- 👤 R Shulkin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:45
CPC Classifications
A; A63; A63B; A63B60/00; A63B53/00; A63B60/06; A63B60/16; A63B60/0081; A63B60/08; A63B60/10
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
151 words
A golf club assembly for enabling a golfer to select the appropriate shaft flexibility in a golf club according to the golfer''s style and physical capabilities, comprising: a test golf club having an axially hollow, elongated, flexible shaft with a club head fixed to a lower end thereof and a hand grip fixed to an upper open end thereof; a plurality of interchangeable elongated flex members, each having a different predetermined flexibility and an exterior contour complementary to the hollow interior of the flexible shaft for selective insertion into the interior of the flexible shaft through the upper end with the resultant flexibility being a function of the combined flexibility of the shaft and the selected inserted flex member; and releasable fastening means engageable between the shaft and the inserted flex member for releasably securing the inserted flex member in the flexible shaft while the test golf club is being utilized.
Claim 2
Dependent Claim
151 words
A golf club assembly for enabling a golfer to select the appropriate shaft flexibility in a golf club according to the golfer''s style and physical capabilities, comprising: a test golf club having an axially hollow, elongated, flexible shaft with a club head fixed to a lower end thereof and a hand grip fixed to an upper open end thereof; a plurality of interchangeable elongated flex members, each having a different predetermined flexibility and an exterior contour complementary to the hollow interior of the flexible shaft for selective insertion into the interior of the flexible shaft through the upper end with the resultant flexibility being a function of the combined flexibility of the shaft and the selected inserted flex member; and releasable fastening means engageable between the shaft and the inserted flex member for releasably securing the inserted flex member in the flexible shaft while the test golf club is being utilized.
Claim 3
Dependent Claim
39 words
The golf club shaft set out in claim 1 wherein said fastening means comprises complementary engageable sections on the shaft and flex member positioned on said shaft and flex member to securely engage said flex member within said shaft.
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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) | 1977-09-02 | 1978-03-04 | 1978-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-02 | 1982-03-04 | 1982-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-02 | 1986-03-04 | 1986-09-03 | $7700.00 | Window Closed / Lapsed |