US3341189A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic buffer
Assignee: Houdaille Industries Inc
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Filing: 1965-04-12
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Granted: 1967-09-12
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Expires: 1985-04-12
Abstract
No abstract record available.
Inventors
- 👤 Douglas Rumsey Rollin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:24
CPC Classifications
F; F16; F16F; F16F9/00; F16F9/32; F16F9/54; B; B61; B61G; B61G11/00; B61G11/12; F16F1/00; F16F1/02; F16F1/04; F16F1/12; F16F1/128; F16F9/10; F16F9/14; F16F9/16; F16F9/18; F16F9/48; F16F9/486
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
121 words
A HYDRAULIC BUFFER ADAPTED TO BE DISPOSED BETWEEN OPPOSED MOVABLE MEMBERS TO RESIST MOVEMENT OF THE MEMBERS TOWARD ONE ANOTHER AND THE BUFFER COMPRISING: A CYLINDER, A PISTON IN THE CYLINDER AND HAVING A PISTON ROD OF SUBSTANTIALLY SMALLER DIAMETER EXTENDING OUTWARDLY BEYOND ONE END OF THE CYLINDER, MEANS DEFINING A HOUSING ABOUT THE CYLINDER AND PROVIDING A RESERVOIR, MEANS EFFECTING COMMINICATION BETWEEN THE RESERVOIR AND THE CYLINDER, A TUBULAR CYLINDRICAL EXTENSION PROJECTING FROM THE HOUSING ADJACENT TO AND CONCENTRIC WITH SAID ONE END OF THE CYLINDER AND IN SURROUNDING RELATION TO THE PISTON ROD BUT SHORTER THAN THE PISTON ROD SO THAT THE OUTER END PORTION OF THE PISTON ROD PROJECTS THEREBEYOND FOR OPPOSITION TO ONE OF SAID MOVABLE MEMBERS,
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) | 1970-09-11 | 1971-03-13 | 1971-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-11 | 1975-03-13 | 1975-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-11 | 1979-03-13 | 1979-09-12 | $7700.00 | Window Closed / Lapsed |