US3303753A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure liquid control system
Assignee: Eimco Corp
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Filing: 1965-06-18
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Granted: 1967-02-14
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Expires: 1985-06-18
Abstract
No abstract record available.
Inventors
- 👤 Jr Frank V Mccay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:42
CPC Classifications
F; F15; F15B; F15B11/00; F15B11/16; F15B2211/00; F15B2211/30; F15B2211/305; F15B2211/30505; F15B2211/31; F15B2211/3105; F15B2211/3116; F15B2211/3122; F15B2211/35; F15B2211/50; F15B2211/505; F15B2211/50509; F15B2211/50518; F15B2211/515; F15B2211/5157; F15B2211/55; F15B2211/60; F15B2211/615; F15B2211/70; F15B2211/71; F15B2211/78
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
236 words
A PRESSURE LIQUID CONTROL SYSTEM COMPRISING A SOURCE OF PRESSURE LIQUID; FIRST AND SECOND SETS OF FLOW CONTROL VALVES; A FLOW CONTROL SPOOL OPERATIVELY ASSOCIATED WITH EACH OF THE FLOW CONTROL VALVES; CONDUIT MEANS SERIALLY CONNECTING THE SOURCE OF PRESSURE LIQUID AND EACH OF THE FIRST SET OF FLOW CONTROL VALVES UNDER CONTROL OF THE FLOW CONTROL SPOOLS THEREOF, AND CONNECTING EACH OF THE SECOND SET OF FLOW CONTROL VALVES IN PARALLEL WITH EACH OTHER AND IN SERIES WITH THE FIRST SET OF FLOW CONTROL VALVES; FIRST AND SECOND SETS OF MOTION DEVICES; PRESSURE FLUID AND RETURN LINES CONNECTING EACH MOTION DEVICE OF THE FIRST AND SECOND SETS OF MOTION DEVICES WITH THEIR RESPECTIVE FIRST AND SECOND FLOW CONTROL VALVE UNDER CONTROL OF THE FLOW CONTROL SPOOLS THEREOF; PASSAGE MEANS IN EACH OF THE FIRST SET OF VALVES COOPERATING WITH MEANS ON THEIR RESPECTIVE FLOW CONTROL SPOOL FOR SELECTIVELY DIRECTING ALL OF THE PRESSURE LIQUID FROM THE CONDUIT MEANS TO THEIR MOTION DEVICE AND FROM THEIR MOTION DEVICE TO THE NEXT IN THE SERIES OF THE FLOW CONTROL VALVES; PASSAGE MEANS IN EACH OF THE SECOND SET OF VALVES COOPERATING WITH MEANS ON THEIR RESPECTIVE FLOW CONTROL SPOOL FOR SELEVTIVELY DIRECTING PRESSURE LIQUID FROM THE CONDUIT MEANS TO THEIR RESPECTIVE MOTION DEVICE AND FROM THEIR MOTION DEVICE TO EXHAUST, AND PRESSURE LIQUID RELIEF VALVES IN SAID PASSAGE MEANS FOR EACH OF THE FIRST SET OF VALVES.
Claim 2
Dependent Claim
236 words
A PRESSURE LIQUID CONTROL SYSTEM COMPRISING A SOURCE OF PRESSURE LIQUID; FIRST AND SECOND SETS OF FLOW CONTROL VALVES; A FLOW CONTROL SPOOL OPERATIVELY ASSOCIATED WITH EACH OF THE FLOW CONTROL VALVES; CONDUIT MEANS SERIALLY CONNECTING THE SOURCE OF PRESSURE LIQUID AND EACH OF THE FIRST SET OF FLOW CONTROL VALVES UNDER CONTROL OF THE FLOW CONTROL SPOOLS THEREOF, AND CONNECTING EACH OF THE SECOND SET OF FLOW CONTROL VALVES IN PARALLEL WITH EACH OTHER AND IN SERIES WITH THE FIRST SET OF FLOW CONTROL VALVES; FIRST AND SECOND SETS OF MOTION DEVICES; PRESSURE FLUID AND RETURN LINES CONNECTING EACH MOTION DEVICE OF THE FIRST AND SECOND SETS OF MOTION DEVICES WITH THEIR RESPECTIVE FIRST AND SECOND FLOW CONTROL VALVE UNDER CONTROL OF THE FLOW CONTROL SPOOLS THEREOF; PASSAGE MEANS IN EACH OF THE FIRST SET OF VALVES COOPERATING WITH MEANS ON THEIR RESPECTIVE FLOW CONTROL SPOOL FOR SELECTIVELY DIRECTING ALL OF THE PRESSURE LIQUID FROM THE CONDUIT MEANS TO THEIR MOTION DEVICE AND FROM THEIR MOTION DEVICE TO THE NEXT IN THE SERIES OF THE FLOW CONTROL VALVES; PASSAGE MEANS IN EACH OF THE SECOND SET OF VALVES COOPERATING WITH MEANS ON THEIR RESPECTIVE FLOW CONTROL SPOOL FOR SELEVTIVELY DIRECTING PRESSURE LIQUID FROM THE CONDUIT MEANS TO THEIR RESPECTIVE MOTION DEVICE AND FROM THEIR MOTION DEVICE TO EXHAUST, AND PRESSURE LIQUID RELIEF VALVES IN SAID PASSAGE MEANS FOR EACH OF THE FIRST SET OF VALVES.
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) | 1970-02-13 | 1970-08-15 | 1971-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-13 | 1974-08-15 | 1975-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-13 | 1978-08-15 | 1979-02-14 | $7700.00 | Window Closed / Lapsed |