US3266522A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic valve
Assignee: Doosan Bobcat North America Inc
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Filing: 1963-12-20
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Granted: 1966-08-16
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Expires: 1983-12-20
Abstract
No abstract record available.
Inventors
- 👤 Richard O Gordon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:45
CPC Classifications
F; F15; F15B; F15B9/00; F15B9/02; F15B9/08; F15B9/10; B; B62; B62D; B62D5/00; B62D5/06; B62D5/08; B62D5/087; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/8667; Y10T137/86694; Y10T137/8671
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
237 words
A VALVE COMPRISING AN ELONGATED BODY HAVING A LONGITUDINALLY EXTENDING BORE THEREIN, FIRST AND SECOND LONGITUDINALLY SPACED-APART INLET PORTS, AN OUTLET PORT DISPOSED INTERMEDIATE THE SAID INLET PORTS AND SAID FIRST AND SECOND FLUID MOTOR PORTS DISPOSED RESPECTIVELY BETWEEN THE SAID OUTLET PORT AND THE SAID FIRST INLET PORT AND BETWEEN THE SAID OUTLET PORT AND THE SAID SECOND INLET PORT, ALL OF THE SAID PORTS COMMUNICATING WITH THE SAID BORE, A SPOOL SLIDABLE DISPOSED IN THE SAID BORE FOR MOVEMENT FROM A CENTERED POSITION TO A FIRST OR SECOND POSITION, THE SAID SPOOL HAVING FIRST, SECOND, THIRD, FOURTH AND FIFTH LONGITUDINALLY SPACED-APART LANDS DISPOSED SO THAT THE SAID FIRST AND FIFTH LANDS COOPERATE WITH THE SAID FIRST AND SECOND INLET PORTS TO CONTROL FLUID FLOW TO THE SAID FLUID MOTOR PORTS AND THE SAID OUTLET PORT, THE SAID THIRD LAND COOPERATES WITH THE SAID OUTLET PORT TO CONTROL FLUID FLOW FROM THE SAID INLET PORTS AND FLUID MOTOR PORTS TO THE SAID OUTLET PORT AND THE SAID SECOND AND FOURTH LANDS COOPERATE RESPECTIVELY WITH THE SAID FIRST AND SECOND FLUID MOTOR PORTS TO CONTROL FLUID FLOW FROM THE SAID FLUID MOTOR PORTS TO THE SAID OUTLET PORT, A FIRST NOTCH IN THE SAID SECOND LAND, AND A SECOND NOTCH IN THE SAID FOURTH LAND, THE SAID NOTCHES BEING DISPOSED TO COOPERATE WITH THE SAID BORE TO FORM ORIFICE MEANS BETWEEN THE ENDS OF THE RESPECTIVE LANDS.
Claim 2
Dependent Claim
237 words
A VALVE COMPRISING AN ELONGATED BODY HAVING A LONGITUDINALLY EXTENDING BORE THEREIN, FIRST AND SECOND LONGITUDINALLY SPACED-APART INLET PORTS, AN OUTLET PORT DISPOSED INTERMEDIATE THE SAID INLET PORTS AND SAID FIRST AND SECOND FLUID MOTOR PORTS DISPOSED RESPECTIVELY BETWEEN THE SAID OUTLET PORT AND THE SAID FIRST INLET PORT AND BETWEEN THE SAID OUTLET PORT AND THE SAID SECOND INLET PORT, ALL OF THE SAID PORTS COMMUNICATING WITH THE SAID BORE, A SPOOL SLIDABLE DISPOSED IN THE SAID BORE FOR MOVEMENT FROM A CENTERED POSITION TO A FIRST OR SECOND POSITION, THE SAID SPOOL HAVING FIRST, SECOND, THIRD, FOURTH AND FIFTH LONGITUDINALLY SPACED-APART LANDS DISPOSED SO THAT THE SAID FIRST AND FIFTH LANDS COOPERATE WITH THE SAID FIRST AND SECOND INLET PORTS TO CONTROL FLUID FLOW TO THE SAID FLUID MOTOR PORTS AND THE SAID OUTLET PORT, THE SAID THIRD LAND COOPERATES WITH THE SAID OUTLET PORT TO CONTROL FLUID FLOW FROM THE SAID INLET PORTS AND FLUID MOTOR PORTS TO THE SAID OUTLET PORT AND THE SAID SECOND AND FOURTH LANDS COOPERATE RESPECTIVELY WITH THE SAID FIRST AND SECOND FLUID MOTOR PORTS TO CONTROL FLUID FLOW FROM THE SAID FLUID MOTOR PORTS TO THE SAID OUTLET PORT, A FIRST NOTCH IN THE SAID SECOND LAND, AND A SECOND NOTCH IN THE SAID FOURTH LAND, THE SAID NOTCHES BEING DISPOSED TO COOPERATE WITH THE SAID BORE TO FORM ORIFICE MEANS BETWEEN THE ENDS OF THE RESPECTIVE LANDS.
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) | 1969-08-15 | 1970-02-14 | 1970-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-15 | 1974-02-14 | 1974-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-15 | 1978-02-14 | 1978-08-16 | $7700.00 | Window Closed / Lapsed |