US3381712A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic control valve
Assignee: Deere and Co
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Filing: 1966-03-21
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Granted: 1968-05-07
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Expires: 1986-03-21
Abstract
No abstract record available.
Inventors
- 👤 Wittren Richard Arthur
- 👤 King Donald Ray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:26
CPC Classifications
F; F15; F15B; F15B9/00; F15B9/02; F15B9/08; B; B62; B62D; B62D5/00; B62D5/06; B62D5/08; B62D5/083; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/86847
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
120 words
A VALVE COMPRISING: A VALVE BODY HAVING A CYLINDRICAL BORE AND AN INLET AND FIRST AND SECOND OUTLET PORTS; A DISK-LIKE VALVE MEMBER COAXIALLY MOUNTED IN SAID BORE AND SECURED AT ITS OUTER PERIPHERY TO SAID BODY; FIRST AND SECOND ANNULAR OUTER VALVE SEATS ASSOCIATED WITH SAID BODY AND COAXIALLY SPACED FROM THE OPPOSITE SIDES OF SAID VALVE MEMBER, THE FIRST AND SECOND OUTLET PORTS RESPECTIVELY COMMUNICATING WITH SAID BORE ON OPPOSITE SIDES OF THE VALVE MEMBER INTERIORLY FROM THE VALVE SEATS AND THE INLET PORT COMMUNICATING WITH BOTH SIDES OF THE VALVE MEMBER EXTERIORLY OF SAID VALVE SEATS; AND ACTUATING MEANS OPERABLY CONNECTED TO THE CENTRAL PORTION OF THE VALVE MEMBER TO AXIALLY SHIFT THE CENTRAL PORTION OF THE
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) | 1971-05-07 | 1971-11-06 | 1972-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-07 | 1975-11-06 | 1976-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-07 | 1979-11-06 | 1980-05-07 | $7700.00 | Window Closed / Lapsed |