Patent US3558245A successfully refreshed from Google Patents.
US3558245A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary motor or pump
Assignee: Vickers Inc
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Filing: 1969-12-15
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Granted: 1971-01-26
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Expires: 1989-12-15
Abstract
Abstract A FLUID MOTOR OR PUMP OF THE ORBITING GEROTOR TYPE IN WHICH VALVING IS ACCOMPLISHED THROUGH THE USE OF RECIPROCATING PISTONS. THE PISTONS ARE SELECTIVELY RECIPROCATED IN RESPONSE TO EITHER RELATIVE ORBITAL MOVEMENT OR RELATIVE ROTATION BETWEEN THE ROTOR AND STATOR TO CONNECT THE FLUID INPUT WITH EXPANDING GEROTOR CHAMBERS AND FLUID OUTPUT WITH CONTRACTING GEROTOR CHAMBERS. THE PISTONS MAY BE DISPOSED FOR RECIPROCATION ON AN AXIS RADIAL TO THE LONGITUDINAL AXIS OF THE GEROTOR UNIT, OR THEY MAY BE DISPOSED FOR RECIPROCATION ON AN AXIS PARALLEL TO AND SPACED FROM THE LONGITUDINAL AXIS OF THE GORETOR UNIT.
Inventors
- 👤 Joseph A Bolduc
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:29
CPC Classifications
F; F04; F04C; F04C2/00; F04C2/08; F04C2/10; F04C2/103; F04C2/104; F04C2/105
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) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |