US3343833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic shock absorber
Assignee: Tenneco Automotive Europe BVBA
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Filing: 1965-10-20
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Granted: 1967-09-26
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Expires: 1985-10-20
Abstract
No abstract record available.
Inventors
- 👤 John H Fader
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:04
CPC Classifications
F; F16; F16F; F16F9/00; F16F9/06; F16F9/061; F16F9/32; F16F9/3207
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
196 words
A HYDRAULIC DIRECT ACTING SHOCK ABSORBER INCLUDING A PLASTIC CYLINDER HAVING ONE END THEREOF CLOSED, A PLASTIC PISTON DISPOSED IN SAID CYLINDER, MEANS PROVIDING AN ORIFICE COMMUNICATING SAID CYLINDER ON ONE SIDE OF SAID PISTON WITH SAID CYLINDER ON THE OTHER SIDE OF SAID PISTON THROUGH WHICH HYDRAULIC FLUID CAN RESTRICTIVELY PASS, A HOLLOW PISTON ROD CONNECTED WITH SAID PISTON AND EXTENDING BEYOND THE OPPOSITE END OF SAID CYLINDER, GUIDE AND SEALING MEANS CLOSING THE OPPOSITE END OF SAID CYLINDER AND SLIDABLY RECEIVING SAID PISTON ROD, SAID HOLLOW PISTON ROD COMMUNICATING THROUGH SAID PISTON WITH SAID CYLINDER ON THE OPPOSITE SIDE OF SAID PISTON FROM SAID PISTON ROD, SAID CYLINDER BEING SUBSTANTIALLY FILLED WITH HYDRAULIC FLUID AND SAID HOLLOW PISTON ROD BEING FILLED WITH GAS WHEREBY WHEN SAID PISTON MOVES TOWARD SAID ONE CYLINDER END THE HYDRAULIC FLUID DISPLACED BY SAID PISTON ROD WIL FLOW THROUGH SAID ORIFICE MEANS AND INTO SAID HOLLOW PISTON ROD THEREBY COMPRESSING THE GAS THEREIN AND WHEN SAID PISTON MOVES TOWARD AND OPPOSITE CYLINDER END THE HYDRAULIC FLUID WILL FLOW OUT OF SAID PISTON ROD AND INTO SAID CYLINDER SO AS TO KEEP THE LATTER FILLED WITH HYDRAULIC AT ALL TIMES.
Claim 2
Dependent Claim
196 words
A HYDRAULIC DIRECT ACTING SHOCK ABSORBER INCLUDING A PLASTIC CYLINDER HAVING ONE END THEREOF CLOSED, A PLASTIC PISTON DISPOSED IN SAID CYLINDER, MEANS PROVIDING AN ORIFICE COMMUNICATING SAID CYLINDER ON ONE SIDE OF SAID PISTON WITH SAID CYLINDER ON THE OTHER SIDE OF SAID PISTON THROUGH WHICH HYDRAULIC FLUID CAN RESTRICTIVELY PASS, A HOLLOW PISTON ROD CONNECTED WITH SAID PISTON AND EXTENDING BEYOND THE OPPOSITE END OF SAID CYLINDER, GUIDE AND SEALING MEANS CLOSING THE OPPOSITE END OF SAID CYLINDER AND SLIDABLY RECEIVING SAID PISTON ROD, SAID HOLLOW PISTON ROD COMMUNICATING THROUGH SAID PISTON WITH SAID CYLINDER ON THE OPPOSITE SIDE OF SAID PISTON FROM SAID PISTON ROD, SAID CYLINDER BEING SUBSTANTIALLY FILLED WITH HYDRAULIC FLUID AND SAID HOLLOW PISTON ROD BEING FILLED WITH GAS WHEREBY WHEN SAID PISTON MOVES TOWARD SAID ONE CYLINDER END THE HYDRAULIC FLUID DISPLACED BY SAID PISTON ROD WIL FLOW THROUGH SAID ORIFICE MEANS AND INTO SAID HOLLOW PISTON ROD THEREBY COMPRESSING THE GAS THEREIN AND WHEN SAID PISTON MOVES TOWARD AND OPPOSITE CYLINDER END THE HYDRAULIC FLUID WILL FLOW OUT OF SAID PISTON ROD AND INTO SAID CYLINDER SO AS TO KEEP THE LATTER FILLED WITH HYDRAULIC AT ALL TIMES.
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) | 1970-09-25 | 1971-03-27 | 1971-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-25 | 1975-03-27 | 1975-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-25 | 1979-03-27 | 1979-09-26 | $7700.00 | Window Closed / Lapsed |