US3087437A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High temperature variable displacement pump
Assignee: North American Aviation Corp
•
Filing: 1959-10-12
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Granted: 1963-04-30
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Expires: 1979-10-12
Abstract
No abstract record available.
Inventors
- 👤 Henrichsen Knut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:32
CPC Classifications
F; F04; F04B; F04B1/00; F04B1/04; F04B1/10; F04B1/107; F04B1/1071; F04B1/0404; F04B1/0443; F04B1/06; F04B1/07; F04B1/08; F04B49/00; F04B49/12; F04B49/123; F04B49/128
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
A HYDRAULIC DEVICE OF THE RADIAL PISTON, VARIABLE DISPLACEMENT TYPE COMPRISING A CASING HAVING INLET AND OUTLET PORTS; A ROTARY CYLINDER BLOCK HAVING RADIAL CYLINDER CHAMBERS ROTATABLY MOUNTED IN SAID CASING; PISTON MEANS RECIPROCABLE IN THE CHAMBERS OF SAID CYLINDER BLOCK; VALVE MEANS PROVIDING SEQUENTIAL COMMUNICATION BETWEEN SAID CYLINDER CHAMBERS AND SAID INLET AND OUTLET PORTS AS THE CYLINDER BLOCK IS ROTATED; A REACTION RING WITHIN SAID CASING WHEREBY RECIPROCATION OF THE PISTONS MAY BE EFFECTED WHEN SAID REACTION RING IS ECCENTRICALLY POSITIONED RELATIVE TO THE CYLINDER BLOCK UPON ROTATION OF THE SAME, SAID REACTION RING BEING OPERATIVELY CONTACTED BY SAID PISTON MEANS AND BEING CONTINUOUSLY ECCENTRICALLY ADJUSTABLE RELATIVE TO SAID CYLINDER BLOCK TO VARY THE DISPLACEMENT OF THE PISTON MEANS; MEANS MOUNTING SAID REACTION RING FOR SEALINGLY GUIDED FREE-FLOATING STRAIGHT LINE ROLLING MO-
Claim 2
Dependent Claim
134 words
A HYDRAULIC DEVICE OF THE RADIAL PISTON, VARIABLE DISPLACEMENT TYPE COMPRISING A CASING HAVING INLET AND OUTLET PORTS; A ROTARY CYLINDER BLOCK HAVING RADIAL CYLINDER CHAMBERS ROTATABLY MOUNTED IN SAID CASING; PISTON MEANS RECIPROCABLE IN THE CHAMBERS OF SAID CYLINDER BLOCK; VALVE MEANS PROVIDING SEQUENTIAL COMMUNICATION BETWEEN SAID CYLINDER CHAMBERS AND SAID INLET AND OUTLET PORTS AS THE CYLINDER BLOCK IS ROTATED; A REACTION RING WITHIN SAID CASING WHEREBY RECIPROCATION OF THE PISTONS MAY BE EFFECTED WHEN SAID REACTION RING IS ECCENTRICALLY POSITIONED RELATIVE TO THE CYLINDER BLOCK UPON ROTATION OF THE SAME, SAID REACTION RING BEING OPERATIVELY CONTACTED BY SAID PISTON MEANS AND BEING CONTINUOUSLY ECCENTRICALLY ADJUSTABLE RELATIVE TO SAID CYLINDER BLOCK TO VARY THE DISPLACEMENT OF THE PISTON MEANS; MEANS MOUNTING SAID REACTION RING FOR SEALINGLY GUIDED FREE-FLOATING STRAIGHT LINE ROLLING MO-
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-29 | 1966-10-29 | 1967-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-29 | 1970-10-29 | 1971-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-29 | 1974-10-29 | 1975-04-30 | $7700.00 | Window Closed / Lapsed |