US3847404A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wedge lock hydraulic cylinder head
Assignee: Individual
•
Filing: 1973-03-27
•
Granted: 1974-11-12
•
Expires: 1993-03-27
Abstract
Abstract A wedge-shaped locking means for a hydraulic cylinder head is disclosed. The packing head is firmly held in place via the locking means located between a collar on the cylinder tube and retaining means placed adjacent the locking means and the cylinder rod.
Inventors
- 👤 S Agostino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:35
CPC Classifications
F; F16; F16J; F16J10/00; F16J10/02
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
69 words
A hydraulic cylinder head with a locking means comprising a hydraulic cylinder tube, a collar on said hydraulic cylinder tube, a cylinder rod located within said cylinder tube, a solid packing around said cylinder rod and within said cylinder tube, and a plurality of wedge-shaped spaced locking members placed between said collar and retaining means, said retaining means being located between said wedge-shaped locking means and said cylinder rod.
Claim 2
Dependent Claim
69 words
A hydraulic cylinder head with a locking means comprising a hydraulic cylinder tube, a collar on said hydraulic cylinder tube, a cylinder rod located within said cylinder tube, a solid packing around said cylinder rod and within said cylinder tube, and a plurality of wedge-shaped spaced locking members placed between said collar and retaining means, said retaining means being located between said wedge-shaped locking means and said cylinder rod.
Claim 3
Dependent Claim
18 words
The hydraulic cylinder head of claim 1, wherein said collar has a portion thereof overlapping said cylinder tube.
Claim 4
Dependent Claim
15 words
The hydraulic cylinder head of claim 1, wherein said retaining means is a retaining ring.
Claim 5
Dependent Claim
20 words
The hydraulic cylinder head of claim 1, wherein said locking members are three 90* wedges symmetrically spaced around said collar.
Claim 6
Dependent Claim
15 words
The hydraulic cylinder head of claim 1, wherein said retaining means is a snap ring.
Claim 7
Dependent Claim
18 words
The hydraulic cylinder head of claim 1, wherein said locking members are secured to said collar with bolts.
References Cited (Backward Citations)
US2820654A
Cited
US3722374A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-11 | 1978-05-13 | 1978-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-11 | 1982-05-13 | 1982-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-11 | 1986-05-13 | 1986-11-12 | $7700.00 | Window Closed / Lapsed |