Patent US5124508A successfully refreshed from Google Patents.
Patent US4196676A successfully refreshed from Google Patents.
US3313541A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Golf club including reinforced fiber glass shaft
Assignee: United States Fiberglass Co
•
Filing: 1963-10-11
•
Granted: 1967-04-11
•
Expires: 1983-10-11
Abstract
No abstract record available.
Inventors
- 👤 Andrew J Benkoczy
- 👤 Lawrence W Hull
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:37
CPC Classifications
A; A63; A63B; A63B53/00; A63B53/10; A63B2208/00; A63B2208/12; A63B2209/00; A63B2209/02; A63B60/00; A63B60/06; A63B60/08; A63B60/10; Y; Y10; Y10S; Y10S273/00; Y10S273/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
257 words
A GOLF CLUB INCLUDING A TAPERED SHAFT HAVING A CLUB HEAD SECURED TO THE SMALLER END THEREOF AND A HAND GRIP SECURED TO THE LARGER END THEREOF, SAID SHAFT CONSISTING ESSENTIALLY OF A PLURALITY OF PARALLEL LONGITUDINAL GLASS FIBERS IN SAID SHAFT EACH EXTENDING SUBSTANTIALLY AXIALLY OF SAID SHAFT FROM SAID GRIP TO SAID HEAD, A PLURALITY OF PARALLEL AND GENERALLY CIRCUMFERENTIALLY DISPOSED GLASS FIBERS INTERWOVEN WITH INDIVIDUAL SMALL GROUPS OF SAID LONGITUDINAL FIBERS TO INCREASE THE HOOP STRENGTH ALONG THE ENTIRE LENGTH OF THE SHAFT AND PROVIDE RESISTANCE AGAINST COLLAPSING OF SAID TUBULAR SHAFT WHEN THE CLUB HEAD STRIKES A GOLF BALL, SAID CIRCUMFERENTIAL FIBERS BEING SUBSTANTIALLY FEWER IN NUMBER THAN SAID LONGITUDINAL FIBERS FOR MAXIMUM LONGITUDINAL STIFFNESS, SAID LONGITUDINAL AND CIRCUMFERENTIAL GLASS FIBERS BEING DISPOSED IN A PLURALITY OF LAYERS, SAID PLURALITY OF LAYERS VARYING IN NUMBER ALONG THE LENGTH OF SAID TUBULAR SHAFT SO THAT THE WALL THICKNESS OF SAID SHAFT VARIES ALONG ITS LENGTH WITH THE GREATEST THICKNESS BEING DISPOSED AT SAID SMALLER END FOR MAXIMUM STRENGTH IN THE PORTION OF THE SHAFT ADAPTED TO SUPPORT THE CLUB HEAD, A PLURALITY OF REINFORCING GLASS FIBERS DISPOSED IN SAID SMALLER END BETWEEN SAID LAYERS AND AT AN ANGLE OF ABOUT 30-45* TO SAID LONGITUDINAL FIBERS TO RESIST TORSIONAL STRESSES WHICH ARE THE GREATEST AT SAID END WHEN THE CLUB HEAD STRIKES A GOLF BALL, AND THERMOSETTING RESIN BINDER MEANS FOR JOINING SAID FIBERS AND SAID LAYERS TOGETHER IN A SUBSTANTIALLY INTEGRAL TUBE CAPABLE OF RESISTING THE TORSIONAL, INTER-LAMINAR SHEAR AND OTHER FORCES IMPOSED THEREON.
Claim 2
Dependent Claim
257 words
A GOLF CLUB INCLUDING A TAPERED SHAFT HAVING A CLUB HEAD SECURED TO THE SMALLER END THEREOF AND A HAND GRIP SECURED TO THE LARGER END THEREOF, SAID SHAFT CONSISTING ESSENTIALLY OF A PLURALITY OF PARALLEL LONGITUDINAL GLASS FIBERS IN SAID SHAFT EACH EXTENDING SUBSTANTIALLY AXIALLY OF SAID SHAFT FROM SAID GRIP TO SAID HEAD, A PLURALITY OF PARALLEL AND GENERALLY CIRCUMFERENTIALLY DISPOSED GLASS FIBERS INTERWOVEN WITH INDIVIDUAL SMALL GROUPS OF SAID LONGITUDINAL FIBERS TO INCREASE THE HOOP STRENGTH ALONG THE ENTIRE LENGTH OF THE SHAFT AND PROVIDE RESISTANCE AGAINST COLLAPSING OF SAID TUBULAR SHAFT WHEN THE CLUB HEAD STRIKES A GOLF BALL, SAID CIRCUMFERENTIAL FIBERS BEING SUBSTANTIALLY FEWER IN NUMBER THAN SAID LONGITUDINAL FIBERS FOR MAXIMUM LONGITUDINAL STIFFNESS, SAID LONGITUDINAL AND CIRCUMFERENTIAL GLASS FIBERS BEING DISPOSED IN A PLURALITY OF LAYERS, SAID PLURALITY OF LAYERS VARYING IN NUMBER ALONG THE LENGTH OF SAID TUBULAR SHAFT SO THAT THE WALL THICKNESS OF SAID SHAFT VARIES ALONG ITS LENGTH WITH THE GREATEST THICKNESS BEING DISPOSED AT SAID SMALLER END FOR MAXIMUM STRENGTH IN THE PORTION OF THE SHAFT ADAPTED TO SUPPORT THE CLUB HEAD, A PLURALITY OF REINFORCING GLASS FIBERS DISPOSED IN SAID SMALLER END BETWEEN SAID LAYERS AND AT AN ANGLE OF ABOUT 30-45* TO SAID LONGITUDINAL FIBERS TO RESIST TORSIONAL STRESSES WHICH ARE THE GREATEST AT SAID END WHEN THE CLUB HEAD STRIKES A GOLF BALL, AND THERMOSETTING RESIN BINDER MEANS FOR JOINING SAID FIBERS AND SAID LAYERS TOGETHER IN A SUBSTANTIALLY INTEGRAL TUBE CAPABLE OF RESISTING THE TORSIONAL, INTER-LAMINAR SHEAR AND OTHER FORCES IMPOSED THEREON.
References Cited (Backward Citations)
US1662712A
Cited
US2573361A
Cited
US2643700A
Cited
US2726185A
Cited
US2760896A
Cited
US2747876A
Cited
US2809144A
Cited
US2934345A
Cited
US2991080A
Cited
US3166319A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-04-10 | 1970-10-10 | 1971-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-10 | 1974-10-10 | 1975-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-10 | 1978-10-10 | 1979-04-11 | $7700.00 | Window Closed / Lapsed |