US3369674A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic cushioning device for railway vehicles
Assignee: Buckeye Steel Castings Co
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Filing: 1966-03-03
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Granted: 1968-02-20
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Expires: 1986-03-03
Abstract
No abstract record available.
Inventors
- 👤 Ross G Carle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:39
CPC Classifications
B; B61; B61D; B61D45/00; B61D45/008; B61G; B61G11/00; B61G11/12; B61G9/00; B61G9/12; B61G9/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A HYDRAULIC MECHANISM FOR CUSHIONING IMPACTS COMPRISING, A TUBULAR SHAPED WALL, A HEAD MEMBER CLOSING EACH END OF SAID TUBULAR WALL, A PISTON WITHIN SAID TUBULAR WALL, A PISTON ROD CARRIED BY SAID PISTON EXTENDING THROUGH ONE OF SAID HEAD MEMBERS, ANOTHER PISTON ROD CARRIED BY SAID PISTON EXTENDING THROUGH THE OTHER OF SAID HEAD MEMBERS, SAID TUBULAR WALL HAVING A DIAMETER AT ITS CENTRAL PORTION GREATER THAN THE DIAMETER OF SAID PISTON PROVIDING AN ORIFICE AREA BETWEEN THE PERIMETER OF THE PISTON AND THE INNER SURFACE OF SAID TUBULAR WALL, INNER SURFACES ON SAID TUBULAR WALL OF CONICAL SHAPES CONVERGING INWARD-
Claim 2
Dependent Claim
102 words
A HYDRAULIC MECHANISM FOR CUSHIONING IMPACTS COMPRISING, A TUBULAR SHAPED WALL, A HEAD MEMBER CLOSING EACH END OF SAID TUBULAR WALL, A PISTON WITHIN SAID TUBULAR WALL, A PISTON ROD CARRIED BY SAID PISTON EXTENDING THROUGH ONE OF SAID HEAD MEMBERS, ANOTHER PISTON ROD CARRIED BY SAID PISTON EXTENDING THROUGH THE OTHER OF SAID HEAD MEMBERS, SAID TUBULAR WALL HAVING A DIAMETER AT ITS CENTRAL PORTION GREATER THAN THE DIAMETER OF SAID PISTON PROVIDING AN ORIFICE AREA BETWEEN THE PERIMETER OF THE PISTON AND THE INNER SURFACE OF SAID TUBULAR WALL, INNER SURFACES ON SAID TUBULAR WALL OF CONICAL SHAPES CONVERGING INWARD-
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) | 1971-02-19 | 1971-08-21 | 1972-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-19 | 1975-08-21 | 1976-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-19 | 1979-08-21 | 1980-02-20 | $7700.00 | Window Closed / Lapsed |