US3230894A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power transmission
Assignee: Unisys Corp
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Filing: 1962-11-05
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Granted: 1966-01-25
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Expires: 1982-11-05
Abstract
No abstract record available.
Inventors
- 👤 Benjamin W Badenoch
- 👤 Edward I Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:18
CPC Classifications
F; F01; F01B; F01B3/00; F01B3/0032; F01B3/0044; F01B3/0055; F01B3/10; F01B3/103; F01B3/104
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
A ROTARY, AXIAL PISTON TYPE PUMP, OR MOTOR DEVICE COMPRISING: A ROTATABLE CYLINDER BARREL HAVING A VALVING SURFACE; PISTONS IN THE BARREL; CAMMING MEANS FOR CAUSING RECIPROCATION OF SAID PISTON IN SAID BARREL; AN EXTERNAL CASING SURROUNDING SAID CYLINDER BARREL AND CAMMING MEANS, SAID CASING TERMINATING IN A MOUNTING FACE LYING SUBSTANTIALLY IN THE PLANE OF SAID VALVING SURFACE AND HAVING AN AXIAL OPENING THROUGH WHICH SAID VALVING SURFACE IS EXPOSED; A HEAD MEMBER SECURED TO SAID MOUNTING FACE; A VALVE PLATE ROTATABLY MOUNTED IN SAID HEAD MEMBER AND HAVING INLET AND OUTLET PORTS; AND FLUID PRESSURE OPERATED MEANS LOCATED ENTIRELY WITHIN SAID HEAD MEMBER FOR ROTATING SAID VALVE PLATE TO VARY THE EFFECTIVE DISPLACEMENT OF SAID DEVICE.
Claim 2
Dependent Claim
118 words
A ROTARY, AXIAL PISTON TYPE PUMP, OR MOTOR DEVICE COMPRISING: A ROTATABLE CYLINDER BARREL HAVING A VALVING SURFACE; PISTONS IN THE BARREL; CAMMING MEANS FOR CAUSING RECIPROCATION OF SAID PISTON IN SAID BARREL; AN EXTERNAL CASING SURROUNDING SAID CYLINDER BARREL AND CAMMING MEANS, SAID CASING TERMINATING IN A MOUNTING FACE LYING SUBSTANTIALLY IN THE PLANE OF SAID VALVING SURFACE AND HAVING AN AXIAL OPENING THROUGH WHICH SAID VALVING SURFACE IS EXPOSED; A HEAD MEMBER SECURED TO SAID MOUNTING FACE; A VALVE PLATE ROTATABLY MOUNTED IN SAID HEAD MEMBER AND HAVING INLET AND OUTLET PORTS; AND FLUID PRESSURE OPERATED MEANS LOCATED ENTIRELY WITHIN SAID HEAD MEMBER FOR ROTATING SAID VALVE PLATE TO VARY THE EFFECTIVE DISPLACEMENT OF SAID DEVICE.
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) | 1969-01-24 | 1969-07-26 | 1970-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-24 | 1973-07-26 | 1974-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-24 | 1977-07-26 | 1978-01-25 | $7700.00 | Window Closed / Lapsed |