Patent US3326546A successfully refreshed from Google Patents.
US3326546A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydropneumatic cylinder arrangement
Assignee: Individual
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Filing: 1965-07-07
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Granted: 1967-06-20
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Expires: 1985-07-07
Abstract
No abstract record available.
Inventors
- 👤 Otto Gunter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:52
CPC Classifications
F; F16; F16F; F16F9/00; F16F9/06; F16F9/08; F16F9/092; F16F9/062
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A HYDROPNEUMATIC PISTON CYLINDER ARRANGEMENT COMPRISING TWO CONCENTRIC CYLINDERS, A PISTON SLIDABLY MOUNTED WITHIN SAID INNER CYLINDER DEFINING THEREIN FIRST AND SECOND CHAMBERS, AN AXIALLY MOVABLE GASKET IN SAID OUTER CYLINDER DEFINING THEREIN FIRST AND SECOND CHAMBERS, A TOP COVER AND A BOTTOM COVER RESPECTIVELY SEALING THE OUTER ENDS OF SAID CHAMBERS, CHANNEL MEANS IN SAID TOP COVER INTERCONNECTING SAID FIRST CHAMBERS, GAS UNDER PRESURE FILLING SAID SECOND CHAMBER OF SAID OUTER CYLINDER, A HYDRAULIC FLUID FILLING SAID FIRST CHAMBERS, AND MEANS CONNECTED TO SAID PISTON AND EXTENDING THROUGH SAID TOP COVER.
Claim 2
Dependent Claim
92 words
A HYDROPNEUMATIC PISTON CYLINDER ARRANGEMENT COMPRISING TWO CONCENTRIC CYLINDERS, A PISTON SLIDABLY MOUNTED WITHIN SAID INNER CYLINDER DEFINING THEREIN FIRST AND SECOND CHAMBERS, AN AXIALLY MOVABLE GASKET IN SAID OUTER CYLINDER DEFINING THEREIN FIRST AND SECOND CHAMBERS, A TOP COVER AND A BOTTOM COVER RESPECTIVELY SEALING THE OUTER ENDS OF SAID CHAMBERS, CHANNEL MEANS IN SAID TOP COVER INTERCONNECTING SAID FIRST CHAMBERS, GAS UNDER PRESURE FILLING SAID SECOND CHAMBER OF SAID OUTER CYLINDER, A HYDRAULIC FLUID FILLING SAID FIRST CHAMBERS, AND MEANS CONNECTED TO SAID PISTON AND EXTENDING THROUGH SAID TOP COVER.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-06-19 | 1970-12-19 | 1971-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-19 | 1974-12-19 | 1975-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-19 | 1978-12-19 | 1979-06-20 | $7700.00 | Window Closed / Lapsed |