US3276468A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid pumping system with auxiliary shut-off control responsive to overpressure
Assignee: Parker Hannifin Corp
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Filing: 1964-03-23
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Granted: 1966-10-04
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Expires: 1984-03-23
Abstract
No abstract record available.
Inventors
- 👤 Ralph H Lebow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:24
CPC Classifications
B; B64; B64D; B64D37/00; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/2574; Y10T137/2579; Y10T137/2599; Y10T137/2605; Y10T137/2635; Y10T137/3367; Y10T137/3421; Y10T137/7722; Y10T137/7758; Y10T137/7762; Y10T137/7764; Y10T137/7766
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
APPARATUS FOR CONTROLLING THE FLOW OF LIQUID COMPRISING A CONDUIT, VALVE MEANS FOR CONTROLLING THE FLOW OF LIQUID THROUGH THE CONDUIT, A SOURCE OF LIQUID SUPPLY, DELIVERING MEANS UPSTREAM OF SAID VALVE MEANS FOR DELIVERING LIQUID UNDER PRESSURE FROM SAID SOURCE TO SAID VALVE MEANS, REGULATING MEANS FOR INCREASING OR DECREASING THE FLOW RATE OF LIQUID TO SAID VALVE MEANS BY SAID DELIVERING MEANS, A FIRST CONTROL MEANS RESPONSIVE TO A FIRST PREDETERMINED PRESSURE IN SAID CONDUIT DOWNSTREAM OF SAID VALVE MEANS FOR DISCONTINUING FLOW OF LIQUID UNDER PRESSURE THROUGH SAID VALVE MEANS, AND A SECOND CONTROL MEANS RESPONSIVE TO A SECOND PREDETERMINED LIQUID PRESSURE DOWNSTREAM OF SAID VALVE MEANS AND OPERATIVELY CONNECTED TO SAID REGULATING MEANS FOR OPERATING SAID REGULATING MEANS TO REDUCE THE FLOW OF LIQUID UNDER PRESSURE TO SAID VALVE MEANS IN THE EVENT SAID FIRST CONTROL MEANS FAILS TO FUNCTION.
Claim 2
Dependent Claim
144 words
APPARATUS FOR CONTROLLING THE FLOW OF LIQUID COMPRISING A CONDUIT, VALVE MEANS FOR CONTROLLING THE FLOW OF LIQUID THROUGH THE CONDUIT, A SOURCE OF LIQUID SUPPLY, DELIVERING MEANS UPSTREAM OF SAID VALVE MEANS FOR DELIVERING LIQUID UNDER PRESSURE FROM SAID SOURCE TO SAID VALVE MEANS, REGULATING MEANS FOR INCREASING OR DECREASING THE FLOW RATE OF LIQUID TO SAID VALVE MEANS BY SAID DELIVERING MEANS, A FIRST CONTROL MEANS RESPONSIVE TO A FIRST PREDETERMINED PRESSURE IN SAID CONDUIT DOWNSTREAM OF SAID VALVE MEANS FOR DISCONTINUING FLOW OF LIQUID UNDER PRESSURE THROUGH SAID VALVE MEANS, AND A SECOND CONTROL MEANS RESPONSIVE TO A SECOND PREDETERMINED LIQUID PRESSURE DOWNSTREAM OF SAID VALVE MEANS AND OPERATIVELY CONNECTED TO SAID REGULATING MEANS FOR OPERATING SAID REGULATING MEANS TO REDUCE THE FLOW OF LIQUID UNDER PRESSURE TO SAID VALVE MEANS IN THE EVENT SAID FIRST CONTROL MEANS FAILS TO FUNCTION.
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) | 1969-10-03 | 1970-04-04 | 1970-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-03 | 1974-04-04 | 1974-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-03 | 1978-04-04 | 1978-10-04 | $7700.00 | Window Closed / Lapsed |