Patent US3274950A successfully refreshed from Google Patents.
US3274950A
Expired / Lapsed
US
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Axial piston fluid pumps or motors
Assignee: Unipat AG
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Filing: 1965-01-11
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Granted: 1966-09-27
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Expires: 1985-01-11
Abstract
No abstract record available.
Inventors
- 👤 Oswald H Thoma
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:07
CPC Classifications
F; F01; F01B; F01B3/00; F01B3/0082; F01B3/0085; F01B3/0032; F01B3/0044; F01B3/007; F01B3/10; F01B3/103; F01B3/109; F04; F04B; F04B1/00; F04B1/12; F04B1/122; F04B1/124; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18024; Y10T74/18056; Y10T74/18296; Y10T74/18336
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
AN AXIAL PISTON FLUID MACHINE HAVING A PLURALITY OF GENERALLY PARALLEL CYLINDER BORES, PISTONS SLIDABLE DISPOSED IN SAID CYLINDER BORES, A SLIDING SHOE TO WHICH EACH PISTON IS PIVOTALLY CONNECTED, A ROTARY DRIVE MEMBER WHICH CIRCUMFERENTIALLY AND RADIALLY LOCATES THE SHOES WITH AXIAL OR LONGITUDINALLY FREEDOM OF MOVEMENT, A THRUST MEMBER HAVING A PLANE SURFACE WHICH IS INCLINABLE RELATIVE TO THE AXIS OF THE PISTONS TO TRANSMIT AXIAL THRUST, THE SHOES ENGAGING THE THRUST MEMBER, EACH SHOE BEING FORMED IN AT LEAST TWO PARTS OF WHICH ONE PART IS LOCATED IN THE ROTARY DRIVE MEMBER AND RESTRAINED AGAINST CIRCUMFERENTIAL, RADIAL OR PIVOTAL MOVEMENTS, AND PIVOTALLY CONNECTED TO THE RESPECTIVE PISTON, AND ANOTHER PART BEARS AGAINST THE PLANE SURFACE AND IS PIVOTALLY CONNECTED TO THE FIRST PART.
Claim 2
Dependent Claim
126 words
AN AXIAL PISTON FLUID MACHINE HAVING A PLURALITY OF GENERALLY PARALLEL CYLINDER BORES, PISTONS SLIDABLE DISPOSED IN SAID CYLINDER BORES, A SLIDING SHOE TO WHICH EACH PISTON IS PIVOTALLY CONNECTED, A ROTARY DRIVE MEMBER WHICH CIRCUMFERENTIALLY AND RADIALLY LOCATES THE SHOES WITH AXIAL OR LONGITUDINALLY FREEDOM OF MOVEMENT, A THRUST MEMBER HAVING A PLANE SURFACE WHICH IS INCLINABLE RELATIVE TO THE AXIS OF THE PISTONS TO TRANSMIT AXIAL THRUST, THE SHOES ENGAGING THE THRUST MEMBER, EACH SHOE BEING FORMED IN AT LEAST TWO PARTS OF WHICH ONE PART IS LOCATED IN THE ROTARY DRIVE MEMBER AND RESTRAINED AGAINST CIRCUMFERENTIAL, RADIAL OR PIVOTAL MOVEMENTS, AND PIVOTALLY CONNECTED TO THE RESPECTIVE PISTON, AND ANOTHER PART BEARS AGAINST THE PLANE SURFACE AND IS PIVOTALLY CONNECTED TO THE FIRST PART.
References Cited (Backward Citations)
US2463299A
Cited
US2721519A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |