Patent US4029208A successfully refreshed from Google Patents.
Patent US3147773A successfully refreshed from Google Patents.
US3147773A
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US
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Fluid flow directing arrangement and method of operation
Assignee: Lockheed Martin Corp
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Filing: 1960-09-22
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Granted: 1964-09-08
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Expires: 1980-09-22
Abstract
No abstract record available.
Inventors
- 👤 Florence M Matthews
- 👤 Paul K Shumpert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:14
CPC Classifications
B; B64; B64C; B64C29/00; B64C29/0008; B64C29/0041; B64C29/0066; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87096; Y10T137/877; Y10T137/87788; Y10T137/87812
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
A FLUID FLOW DIVERTING ARRANGEMENT COMPRISING IN COMBINATION: A MAIN FLUID CONDUCTOR RECEIVING A FLUID SUPPLY, A FIRST BUTTERFLY VALVE IN SAID MAIN CONDUCTOR, A BRANCH FLUID CONDUCTOR CONNECTED TO SAID MAIN CONDUCTOR BETWEEN THE FLUID SUPPLY RECEIVING POINT AND SAID FIRST BUTTERFLY VALVE, A SECOND BUTTERFLY VALVE IN SAID BRANCH CONDUCTOR, SAID BUTTERFLY VALVES ARRANGED WHEREBY WHEN ONE IS CLOSED THE OTHER IS OPEN, AND A CONTROL MEANS OPERATING SAID FIRST AND SECOND BUTTERFLY VALVES ALONG A COMBINED VALVE SCHEDULE IN WHICH THE OPEN VALVE IS PARTIALLY CLOSED BEFORE ANY MOVEMENT OF THE CLOSED VALVE WHEREAFTER BOTH VALVES MOVE CONCURRENTLY IN THEIR RESPECTIVE DIRECTIONS UNTIL THE ORIGINALLY OPEN VALVE IS FULLY CLOSED AND THEREAFTER THE OPENING VALVE MOVES TO A FULL OPEN POSITION.
Claim 2
Dependent Claim
124 words
A FLUID FLOW DIVERTING ARRANGEMENT COMPRISING IN COMBINATION: A MAIN FLUID CONDUCTOR RECEIVING A FLUID SUPPLY, A FIRST BUTTERFLY VALVE IN SAID MAIN CONDUCTOR, A BRANCH FLUID CONDUCTOR CONNECTED TO SAID MAIN CONDUCTOR BETWEEN THE FLUID SUPPLY RECEIVING POINT AND SAID FIRST BUTTERFLY VALVE, A SECOND BUTTERFLY VALVE IN SAID BRANCH CONDUCTOR, SAID BUTTERFLY VALVES ARRANGED WHEREBY WHEN ONE IS CLOSED THE OTHER IS OPEN, AND A CONTROL MEANS OPERATING SAID FIRST AND SECOND BUTTERFLY VALVES ALONG A COMBINED VALVE SCHEDULE IN WHICH THE OPEN VALVE IS PARTIALLY CLOSED BEFORE ANY MOVEMENT OF THE CLOSED VALVE WHEREAFTER BOTH VALVES MOVE CONCURRENTLY IN THEIR RESPECTIVE DIRECTIONS UNTIL THE ORIGINALLY OPEN VALVE IS FULLY CLOSED AND THEREAFTER THE OPENING VALVE MOVES TO A FULL OPEN POSITION.
References Cited (Backward Citations)
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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) | 1967-09-08 | 1968-03-09 | 1968-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-08 | 1972-03-09 | 1972-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-08 | 1976-03-09 | 1976-09-08 | $7700.00 | Window Closed / Lapsed |