US3168010A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sequence valves
Assignee: Waterman Hydraulics Corp
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Filing: 1963-01-09
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Granted: 1965-02-02
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Expires: 1983-01-09
Abstract
No abstract record available.
Inventors
- 👤 William W Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:02
CPC Classifications
F; F15; F15B; F15B13/00; F15B13/02; F15B13/06; F15B13/07; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/2564; Y10T137/2572
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
186 words
A SEQUENCE VALVE OF THE CHARACTER DESCRIBED COMPRISING IN COMBINATION A VALVE BODY HAVING AN EXIT PORT FOR FLUID ADAPTED TO BE DELIVERED TO A HYDRAULIC MOTOR FOR ENERGIZING THE ADVANCE PORTION OF ITS CYCLE OF OPERATION, A RETURN PORT IN SAID BODY FOR FLOW FROM THE MOTOR IN THE SAID ADVANCED PORTION OF ITS CYCLE, A DISCHARGE PORT FOR SAID RETURN FLOW, AN INLET PORT OF PRESSURE FLUID FROM A PRESSURE SOURCE, A MAIN PASSAGE THROUGH SAID VALVE BODY TO CONDUCT FLOW FROM SAID INLET PORT TO SAID EXIT PORT, A CONTROL VALVE IN SAID PASSAGE ADAPTED TO BE ACTED ON BY THE FLOW FROM INLET TO EXIT PORTS, AN ORIFICE IN SAID VALVE THROUGH WHICH SAID FLOW PASSES TO CREATE A PRESSURE DROP IN SAID FLOW AS IT PASSES SAID VALVE FOR MOVING SAID VALVE IN RESPONSE TO THE RATE OF FLOW, A SPRING RESISTING SAID VALVE MOVEMENT, A RETURN FLOW PASSAGE IN SAID HOUSING FOR CONDUCTING RETURN FLOW ENTERING SAID RETURN PORT TO SAID DISCHARGE PORT, SAID VALVE BEING CONSTRUCTED AND ARRANGED TO CONTROL AND CUT OFF FLOW THROUGH SAID RETURN FLOW PASSAGE
Claim 2
Dependent Claim
186 words
A SEQUENCE VALVE OF THE CHARACTER DESCRIBED COMPRISING IN COMBINATION A VALVE BODY HAVING AN EXIT PORT FOR FLUID ADAPTED TO BE DELIVERED TO A HYDRAULIC MOTOR FOR ENERGIZING THE ADVANCE PORTION OF ITS CYCLE OF OPERATION, A RETURN PORT IN SAID BODY FOR FLOW FROM THE MOTOR IN THE SAID ADVANCED PORTION OF ITS CYCLE, A DISCHARGE PORT FOR SAID RETURN FLOW, AN INLET PORT OF PRESSURE FLUID FROM A PRESSURE SOURCE, A MAIN PASSAGE THROUGH SAID VALVE BODY TO CONDUCT FLOW FROM SAID INLET PORT TO SAID EXIT PORT, A CONTROL VALVE IN SAID PASSAGE ADAPTED TO BE ACTED ON BY THE FLOW FROM INLET TO EXIT PORTS, AN ORIFICE IN SAID VALVE THROUGH WHICH SAID FLOW PASSES TO CREATE A PRESSURE DROP IN SAID FLOW AS IT PASSES SAID VALVE FOR MOVING SAID VALVE IN RESPONSE TO THE RATE OF FLOW, A SPRING RESISTING SAID VALVE MOVEMENT, A RETURN FLOW PASSAGE IN SAID HOUSING FOR CONDUCTING RETURN FLOW ENTERING SAID RETURN PORT TO SAID DISCHARGE PORT, SAID VALVE BEING CONSTRUCTED AND ARRANGED TO CONTROL AND CUT OFF FLOW THROUGH SAID RETURN FLOW PASSAGE
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) | 1968-02-02 | 1968-08-03 | 1969-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-02 | 1972-08-03 | 1973-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-02 | 1976-08-03 | 1977-02-02 | $7700.00 | Window Closed / Lapsed |