Patent US3256782A successfully refreshed from Google Patents.
US3256782A
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Piston for hydraulic axial piston units with tiltable swash plate
Assignee: Individual
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Filing: 1964-02-17
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Granted: 1966-06-21
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Expires: 1984-02-17
Abstract
No abstract record available.
Inventors
- 👤 Ebert Heinrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:17
CPC Classifications
F; F01; F01B; F01B3/00; F01B3/0032; F01B3/0044; F01B3/007; F01B3/0082; F01B3/0085; F16; F16J; F16J1/00; F16J1/001
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
A PISTON FOR A HYRRAULIC AXIAL PISTON UNIT WITH A TILTABLE SWASH PLATE, SAID PISTON HAVING ITS ONE END FACE WHICH ENGAGES SAID SWASH PLATE CONVEX TOWARD THE SWASH PLATE AND FOMED AS A SURFACE OF ROTATION THE INTERSECTING LINE OF WHICH WITH A PLANE CONTAINING THE AXIS OF ROTATION OF THE PISTON COMPRISES TWO CURVED LINES ON OPPOSITE SIDES OF THE SAID AXIS OF ROTATION OF THE PISTON AND BEING MIRROR IMAGES OF EACH OTHER AND LOCATED WITHIN THE DIAMETRAL LIMITS OF THE PISTON, SAID LINES MEETING A PLANE FORMING A PART OF SAID ONE END FACE OF THE PISTON AND PERPENDICULAR TO THE AXIS OF ROTATION OF THE PISTON AT A CIRCULAR REGION OF THE PLANE CONCENTRIC WITH SAID AXIS OF ROTATION OF THE PISTON, THE CENTERS OF CURVATURE OF ALL REGIONS OF SAID LINES
Claim 2
Dependent Claim
137 words
A PISTON FOR A HYRRAULIC AXIAL PISTON UNIT WITH A TILTABLE SWASH PLATE, SAID PISTON HAVING ITS ONE END FACE WHICH ENGAGES SAID SWASH PLATE CONVEX TOWARD THE SWASH PLATE AND FOMED AS A SURFACE OF ROTATION THE INTERSECTING LINE OF WHICH WITH A PLANE CONTAINING THE AXIS OF ROTATION OF THE PISTON COMPRISES TWO CURVED LINES ON OPPOSITE SIDES OF THE SAID AXIS OF ROTATION OF THE PISTON AND BEING MIRROR IMAGES OF EACH OTHER AND LOCATED WITHIN THE DIAMETRAL LIMITS OF THE PISTON, SAID LINES MEETING A PLANE FORMING A PART OF SAID ONE END FACE OF THE PISTON AND PERPENDICULAR TO THE AXIS OF ROTATION OF THE PISTON AT A CIRCULAR REGION OF THE PLANE CONCENTRIC WITH SAID AXIS OF ROTATION OF THE PISTON, THE CENTERS OF CURVATURE OF ALL REGIONS OF SAID LINES
References Cited (Backward Citations)
US1539616A
Cited
US2940323A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-20 | 1969-12-20 | 1970-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-20 | 1973-12-20 | 1974-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-20 | 1977-12-20 | 1978-06-21 | $7700.00 | Window Closed / Lapsed |