US3106938A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic vavle
Assignee: Doosan Bobcat North America Inc
•
Filing: 1962-02-14
•
Granted: 1963-10-15
•
Expires: 1982-02-14
Abstract
No abstract record available.
Inventors
- 👤 Richard O Gordon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:52
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; Y10T137/86702; Y10T137/87169; Y10T137/87177
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
168 words
A VALVE COMPRISING AN ELONGAGED BODY PORTION HAVING A LONGITUDINALLY EXTENDING BORE, A FLUID INLET PORT, A FLUID OUTLET PORT, AND A PAIR OF LONGITUDINALLY SPACED APART FLUID MOTOR PORTS, SAID PORTS COMMUNICATING WITH SAID BORE, SAID OUTLET PORT HAVING TWO OPENINGS IN COMMUNICATION WITH SAID BORE, A SPOOL SLIDABLY DISPOSED IN SAID BORE, FIRST AND SECOND PASSAGE MEANS IN SAID SPOOL, FIRST AND SECOND RESTRICTIONS TO FLUID FLOW DISPOSED RESPECTIVELY IN SAID PASSAGE MEANS, SAID PASSAGE MEANS AND RESTRICTIONS COOPERATING WITH SAID PORTS TO PROVIDE A SUBSTANTIALLY UNRESTRICTED FLUID FLOW BETWEEN SAID FLUID INLET AND OUTLET PORTS AND RESTRICTED FLUID COMMUNICATION WITH SAID FLUID MOTOR PORTS IN A FIRST SPOOL POSITION, A SUBSTANTIALLY UNRESTRICTED FLUID FLOW TO ONE OF SAID FLUID MOTOR PORTS AND RESTRICTED FLUID FLOW FROM THE OTHER OF SAID FLUID MOTOR PORTS IN A SECOND SPOOL POSITION, AND A SUBSTANTIALLY UNRESTRICTED FLUID FLOW TO SAID OTHER FLUID MOTOR PORT AND RESTRICTED FLUID FLOW FROM SAID ONE FLUID MOTOR PORT IN A THIRD SPOOL POSITION.
Claim 2
Dependent Claim
168 words
A VALVE COMPRISING AN ELONGAGED BODY PORTION HAVING A LONGITUDINALLY EXTENDING BORE, A FLUID INLET PORT, A FLUID OUTLET PORT, AND A PAIR OF LONGITUDINALLY SPACED APART FLUID MOTOR PORTS, SAID PORTS COMMUNICATING WITH SAID BORE, SAID OUTLET PORT HAVING TWO OPENINGS IN COMMUNICATION WITH SAID BORE, A SPOOL SLIDABLY DISPOSED IN SAID BORE, FIRST AND SECOND PASSAGE MEANS IN SAID SPOOL, FIRST AND SECOND RESTRICTIONS TO FLUID FLOW DISPOSED RESPECTIVELY IN SAID PASSAGE MEANS, SAID PASSAGE MEANS AND RESTRICTIONS COOPERATING WITH SAID PORTS TO PROVIDE A SUBSTANTIALLY UNRESTRICTED FLUID FLOW BETWEEN SAID FLUID INLET AND OUTLET PORTS AND RESTRICTED FLUID COMMUNICATION WITH SAID FLUID MOTOR PORTS IN A FIRST SPOOL POSITION, A SUBSTANTIALLY UNRESTRICTED FLUID FLOW TO ONE OF SAID FLUID MOTOR PORTS AND RESTRICTED FLUID FLOW FROM THE OTHER OF SAID FLUID MOTOR PORTS IN A SECOND SPOOL POSITION, AND A SUBSTANTIALLY UNRESTRICTED FLUID FLOW TO SAID OTHER FLUID MOTOR PORT AND RESTRICTED FLUID FLOW FROM SAID ONE FLUID MOTOR PORT IN A THIRD SPOOL POSITION.
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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) | 1966-10-14 | 1967-04-15 | 1967-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-14 | 1971-04-15 | 1971-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-14 | 1975-04-15 | 1975-10-15 | $7700.00 | Window Closed / Lapsed |