US3132569A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lightweight motor means
Assignee: North American Aviation Corp
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Filing: 1961-11-13
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Granted: 1964-05-12
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Expires: 1981-11-13
Abstract
No abstract record available.
Inventors
- 👤 Allan G Shepherd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:52
CPC Classifications
F; F16; F16J; F16J10/00; F16J10/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
IN A FLUID MOTOR COMPRISING A GENERALLY ELONGATE HOLLOW CYLINDER AND A RELATIVELY MOVABLE PISTON SITUATED THEREIN; AN ANNULAR WALL PORTION INTERMEDIATE THE ENDS OF SAID CYLINDER, SAID WALL PORTION HAVING A THICKNESS WITHIN THE RANGE OF VALUES LIMITED AT ONE EXTREME BY THE MINIMUM THICKNESS REQUIRED TO AVOID RUPTURE OF SAID WALL PORTION AT THE MAXIMUM ANTICIPATED OPERATING PRESSURE WITHIN SAID CYLINDER, AND AT THE OTHER EXTREME BY THE MINIMUM THICKNESS SUFFICIENT TO PREVENT SUBSTANTIALLY ALL DEFLECTION OF SAID WALL PORTION OUTWARDLY UNDER THE INFLUENCE OF SAID MAXIMUM ANTICIPATED OPERATING PRESSURE.
Claim 2
Dependent Claim
92 words
IN A FLUID MOTOR COMPRISING A GENERALLY ELONGATE HOLLOW CYLINDER AND A RELATIVELY MOVABLE PISTON SITUATED THEREIN; AN ANNULAR WALL PORTION INTERMEDIATE THE ENDS OF SAID CYLINDER, SAID WALL PORTION HAVING A THICKNESS WITHIN THE RANGE OF VALUES LIMITED AT ONE EXTREME BY THE MINIMUM THICKNESS REQUIRED TO AVOID RUPTURE OF SAID WALL PORTION AT THE MAXIMUM ANTICIPATED OPERATING PRESSURE WITHIN SAID CYLINDER, AND AT THE OTHER EXTREME BY THE MINIMUM THICKNESS SUFFICIENT TO PREVENT SUBSTANTIALLY ALL DEFLECTION OF SAID WALL PORTION OUTWARDLY UNDER THE INFLUENCE OF SAID MAXIMUM ANTICIPATED OPERATING PRESSURE.
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) | 1967-05-12 | 1967-11-11 | 1968-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-12 | 1971-11-11 | 1972-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-12 | 1975-11-11 | 1976-05-12 | $7700.00 | Window Closed / Lapsed |