US3605553A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure fluid operated cylinder
Assignee: Etablissement dOccident
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Filing: 1969-05-05
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Granted: 1971-09-20
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Expires: 1989-05-05
Abstract
Abstract THIS DISCLOSURE RELATES TO A PISTON FOR FLUID DYNAMIC CYLINDERS WHICH COMPRISES A PISTON ROD, A DISC MOUNTED ON THE PISTON ROD AND HAVING A DIAMETER LESS THAN THE INTERNAL DIAMETER OF THE CYLINDER IN WHICH SAID PISTON IS ARRANGED TO SLIDE, AND A RESILIENT SLEEVE MOUNTED ON SAID DISC, THE CENTRAL PORTION OF SAID RESILIENT SLEEVE HAVING A SMALLER DIAMETER THAN THE END PORTIONS THEREOF WHICH ENGAGE THE INNER SURFACE OF SAID CYLINDER, SAID END PORTIONS OF THE RESILIENT SLEEVE BEING ARRANGED TO ENTER ANNULAR SEATS PROVIDED IN THE ENDS OF SAID CYLINDER IN THE STROKE END POSITIONS OF SAID PISTON.
Inventors
- 👤 Pier Luigi Panigati
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:18
CPC Classifications
F; F15; F15B; F15B15/00; F15B15/20; F15B15/22; F15B15/223
Claims Analysis
Total Claims: 0
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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) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |