Patent US4778180A successfully refreshed from Google Patents.
US4778180A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Golf club
Assignee: Individual
•
Filing: 1987-02-19
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Granted: 1988-10-18
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Expires: 2007-02-19
Abstract
Abstract A golf club wherein the head has opposed ball striking surfaces and is rotatably mounted to a lower angled end of the club shaft. The head is locked to the shaft in its use position by a pivotable bifurcated lever including cam surfaces which on engagement with the club head tighten a cooperating trunnion fixed to the end of the club shaft.
Inventors
- 👤 Arthur W. Guenther
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:00
CPC Classifications
A; A63; A63B; A63B53/00; A63B53/04; A63B53/06; A63B53/065; A63B53/0433; A63B53/047; A63B53/02; A63B53/022
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
143 words
A golf club comprising: a shaft having a lower end angled for horizontal disposition when the club is in use; a mounting element fixed on the lower end of the shaft and comprising a trunnion fixed to the lower end of the shaft and having a laterally projecting pin; a head having opposed striking faces, the head being mounted on the element and being rotatable on the pin between selected positions presenting each face for play; and means to releaseably lock the head in each of said positions, the locking means comprising a bifurcated lever having an arm with a pair of spaced bosses loosely mounted on the lower end of the shaft and straddling the trunnion, each boss being shaped to form a cam interacting with the head whereby the lever is movable into alternate positions to lock and unlock the head.
Claim 2
Dependent Claim
143 words
A golf club comprising: a shaft having a lower end angled for horizontal disposition when the club is in use; a mounting element fixed on the lower end of the shaft and comprising a trunnion fixed to the lower end of the shaft and having a laterally projecting pin; a head having opposed striking faces, the head being mounted on the element and being rotatable on the pin between selected positions presenting each face for play; and means to releaseably lock the head in each of said positions, the locking means comprising a bifurcated lever having an arm with a pair of spaced bosses loosely mounted on the lower end of the shaft and straddling the trunnion, each boss being shaped to form a cam interacting with the head whereby the lever is movable into alternate positions to lock and unlock the head.
Claim 3
Dependent Claim
31 words
A golf club as claimed in claim 1 in which the head includes a recess adjacent the bosses of the lever, the cams of the bosses being registrable with the recess.
Claim 4
Dependent Claim
28 words
A golf club as claimed in claim 2 including a pair of leaf springs mounted in the recess and depressable therein, the bosses being registrable with the springs.
Claim 5
Dependent Claim
49 words
A golf club as claimed in claim 3 in which the head includes a vertical bore centrally located therethrough terminating at its lower end in a recess, the pin being axially located in the bore, and means located in the recess to engage the pin loosely in the bore.
Claim 6
Dependent Claim
33 words
A golf club as claimed in claim 1 in which the lever arm extends horizontally normal to and rearwardly of the striking face presented for play when the head is in locked position.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-10-18 | 1992-04-18 | 1992-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-10-18 | 1996-04-18 | 1996-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-10-18 | 2000-04-18 | 2000-10-18 | $7700.00 | Window Closed / Lapsed |