US3280758A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cylinder block of a hydraulic unit and method of making same
Assignee: Sundstrand Corp
•
Filing: 1964-09-24
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Granted: 1966-10-25
•
Expires: 1984-09-24
Abstract
No abstract record available.
Inventors
- 👤 Leeming Wilson
- 👤 James E Knabe
- 👤 Richard C Britton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:23
CPC Classifications
B; B23; B23K; B23K20/00; B23K20/22; B23K20/227; F; F01; F01B; F01B3/00; F01B3/0032; F01B3/0044; F01B3/0052; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/06; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12861; Y10T428/12903; Y10T428/12917; Y10T428/12924
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
A RECIPROCATING PISTON HYDRAULIC UNIT, COMPRISING, A STATIONARY VALVE MEMBER HAVING INLET AND OUTLET PORTS THEREIN, A STEEL CYLINDER BLOCK ROTATABLY MOUNTED AND HAVING ONE END THEREOF ADJACENT SAID VALVE MEMBER, SAID CYLINDER BLOCK HAVING CYLINDRICAL BORES THEREIN, BRONZE SLEEVES BONDED WITHIN SAID BORES, SAID CYLINDER BLOCK HAVING A BRONZE BEARING PLATE BONDED ON SAID ONE END THEREOF AND SLIDABLY ENGAGING SAID VALVE PLATE, SAID BONDS CONSISTING OF A PORTION OF THE BRONZE SUBSTITUTIONALLY DIFFUSED IN THE STEEL CYLINDER BLOCK, PORTS IN SAID PLATE COMMUNICATING WITH SAID CYLINDRICAL BORES, PISTONS SLIDABLY MOUNTED IN SAID SLEEVES, AND AN INCLINED CAM MEMBER FOR RECIPROCCATING SAID PISTONS ON ROTATION OF THE CYLINDER BLOCK.
Claim 2
Dependent Claim
110 words
A RECIPROCATING PISTON HYDRAULIC UNIT, COMPRISING, A STATIONARY VALVE MEMBER HAVING INLET AND OUTLET PORTS THEREIN, A STEEL CYLINDER BLOCK ROTATABLY MOUNTED AND HAVING ONE END THEREOF ADJACENT SAID VALVE MEMBER, SAID CYLINDER BLOCK HAVING CYLINDRICAL BORES THEREIN, BRONZE SLEEVES BONDED WITHIN SAID BORES, SAID CYLINDER BLOCK HAVING A BRONZE BEARING PLATE BONDED ON SAID ONE END THEREOF AND SLIDABLY ENGAGING SAID VALVE PLATE, SAID BONDS CONSISTING OF A PORTION OF THE BRONZE SUBSTITUTIONALLY DIFFUSED IN THE STEEL CYLINDER BLOCK, PORTS IN SAID PLATE COMMUNICATING WITH SAID CYLINDRICAL BORES, PISTONS SLIDABLY MOUNTED IN SAID SLEEVES, AND AN INCLINED CAM MEMBER FOR RECIPROCCATING SAID PISTONS ON ROTATION OF THE CYLINDER BLOCK.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-24 | 1970-04-25 | 1970-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-24 | 1974-04-25 | 1974-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-24 | 1978-04-25 | 1978-10-25 | $7700.00 | Window Closed / Lapsed |