US3200762A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Axial piston pumps or motors
Assignee: Unipat AG
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Filing: 1963-12-17
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Granted: 1965-08-17
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Expires: 1983-12-17
Abstract
No abstract record available.
Inventors
- 👤 Oswald H Thoma
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:35
CPC Classifications
F; F04; F04B; F04B1/00; F04B1/12; F04B1/20; F04B1/22; F01; F01B; F01B3/00; F01B3/0032; F01B3/0035; F01B3/0044; F01B3/0055
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
186 words
AN AXIAL PISTON PUMP OR MOTOR COMPRISING A ROTARY CYLINDER BLOCK WHICH CONTAINS CYLINDER BORES ARRANGED REGULARLY IN THE BLOCK PARALLEL TO THE AXIS OF ROTATION, A PAIR OF PISTONS IN THE CYLINDER EXTENDING FROM THE OPPOSITE ENDS OF THE CYLINDER BLOCKU, AND INCLINED PLATE LOCATED AT EACH END OF THE CYLINDER BLOCK AGAINST WHICH THE PROJECTING ENDS OF THE PISTONS ARE ARRANGED TO REACT, A DRIVE SHAFT FAST WITH THE BLOCK EXTENDING FROM ONE END OF THE CYLINDER BLOCK TO A CENTRAL HOLE IN THE PLATE AT THAT END, A FIRST BEARING FOR RADIAL LOADS LOCATED THE DRIVE SHAFT FOR ROTATION RELATIVELY TO THE PLATES, A STUB AXILE FAST WITH THE BLOCK EXTENDING FROM THE OPPOSITE END OF THE BLOCK THROUGH A CENTRAL HOLE IN THE OTHER PLATE, A SECOND BEARING FOR RADIAL LOADS LOCATING THE STUB AXLE FOR ROTATION RELATIVELY TO THE PLATE, PASSAGES FOR SUPPLYING LIQUID TO AND FROM THE CYLINDERS EXTENDING THROUGH THE STUB AXLE, AND VALVE MEANS ASSOCIATED WITH THE PASSAGES FOR SEQUENTIALLY CONNECTING THE CYLINDERS THROUGH THE PASSAGES ALTERNATELY TO LOW AND HIGH PRESSURE ZONES DURING THE CYLINDER BLOCK ROTATION.
Claim 2
Dependent Claim
186 words
AN AXIAL PISTON PUMP OR MOTOR COMPRISING A ROTARY CYLINDER BLOCK WHICH CONTAINS CYLINDER BORES ARRANGED REGULARLY IN THE BLOCK PARALLEL TO THE AXIS OF ROTATION, A PAIR OF PISTONS IN THE CYLINDER EXTENDING FROM THE OPPOSITE ENDS OF THE CYLINDER BLOCKU, AND INCLINED PLATE LOCATED AT EACH END OF THE CYLINDER BLOCK AGAINST WHICH THE PROJECTING ENDS OF THE PISTONS ARE ARRANGED TO REACT, A DRIVE SHAFT FAST WITH THE BLOCK EXTENDING FROM ONE END OF THE CYLINDER BLOCK TO A CENTRAL HOLE IN THE PLATE AT THAT END, A FIRST BEARING FOR RADIAL LOADS LOCATED THE DRIVE SHAFT FOR ROTATION RELATIVELY TO THE PLATES, A STUB AXILE FAST WITH THE BLOCK EXTENDING FROM THE OPPOSITE END OF THE BLOCK THROUGH A CENTRAL HOLE IN THE OTHER PLATE, A SECOND BEARING FOR RADIAL LOADS LOCATING THE STUB AXLE FOR ROTATION RELATIVELY TO THE PLATE, PASSAGES FOR SUPPLYING LIQUID TO AND FROM THE CYLINDERS EXTENDING THROUGH THE STUB AXLE, AND VALVE MEANS ASSOCIATED WITH THE PASSAGES FOR SEQUENTIALLY CONNECTING THE CYLINDERS THROUGH THE PASSAGES ALTERNATELY TO LOW AND HIGH PRESSURE ZONES DURING THE CYLINDER BLOCK ROTATION.
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) | 1968-08-16 | 1969-02-15 | 1969-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-16 | 1973-02-15 | 1973-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-16 | 1977-02-15 | 1977-08-17 | $7700.00 | Window Closed / Lapsed |