Patent US3136230A successfully refreshed from Google Patents.
US3136230A
Expired / Lapsed
US
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Hydraulic cylinder
Assignee: Prince Manufacturing Corp
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Filing: 1963-09-30
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Granted: 1964-06-09
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Expires: 1983-09-30
Abstract
No abstract record available.
Inventors
- 👤 Buckley Bruce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:28
CPC Classifications
F; F16; F16J; F16J10/00; F16J10/02; F15; F15B; F15B11/00; F15B11/16; F15B11/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
IN A CYLINDER DEVICE, AN ELONGATED HOLLOW CYLINDRICAL CASING HAVING ONE PERMANENTLY NORMALLY CLOSED END AND AN OPEN END, A PISTON SLIDABLY MOUNTED WITHIN SAID CASING, A PISTON ROD SECURED TO SAID PISTON, A CYLINDER HEAD SLIDABLY MOUNTED ON SAID PISTON ROD WITHIN SAID CASING, A CONCENTRIC GROOVE WITHIN SAID CYLINDER CASING ADJACENT TO ITS OPEN END, A LOCKING RING MOUNTED IN SAID GROOVE AND PROTRUDING THEREFROM TO ENGAGE SAID CYLINDER HEAD AND TO LIMIT THE OUTWARDLY SLIDABLE MOVEMENT OF SAID CYLINDER HEAD, SAID LOCKING RING BEING COMPRISED OF A PLURALITY OF INDEPENDENT PARTS DETACHABLY HELD IN SAID GROOVE BY SAID CYLINDER HEAD, AND AT LEAST ONE FLUID PORT ON SAID CASING AND IN COMMUNICATION WITH THE INTERIOR THEREOF.
Claim 2
Dependent Claim
119 words
IN A CYLINDER DEVICE, AN ELONGATED HOLLOW CYLINDRICAL CASING HAVING ONE PERMANENTLY NORMALLY CLOSED END AND AN OPEN END, A PISTON SLIDABLY MOUNTED WITHIN SAID CASING, A PISTON ROD SECURED TO SAID PISTON, A CYLINDER HEAD SLIDABLY MOUNTED ON SAID PISTON ROD WITHIN SAID CASING, A CONCENTRIC GROOVE WITHIN SAID CYLINDER CASING ADJACENT TO ITS OPEN END, A LOCKING RING MOUNTED IN SAID GROOVE AND PROTRUDING THEREFROM TO ENGAGE SAID CYLINDER HEAD AND TO LIMIT THE OUTWARDLY SLIDABLE MOVEMENT OF SAID CYLINDER HEAD, SAID LOCKING RING BEING COMPRISED OF A PLURALITY OF INDEPENDENT PARTS DETACHABLY HELD IN SAID GROOVE BY SAID CYLINDER HEAD, AND AT LEAST ONE FLUID PORT ON SAID CASING AND IN COMMUNICATION WITH THE INTERIOR THEREOF.
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) | 1967-06-09 | 1967-12-09 | 1968-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-09 | 1971-12-09 | 1972-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-09 | 1975-12-09 | 1976-06-09 | $7700.00 | Window Closed / Lapsed |