US3211217A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid reversing valve structure
Assignee: Westinghouse Electric Corp
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Filing: 1963-07-12
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Granted: 1965-10-12
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Expires: 1983-07-12
Abstract
No abstract record available.
Inventors
- 👤 Wayne H Mckee
- 👤 Philip G Hoffman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:45
CPC Classifications
F; F28; F28F; F28F27/00; F28F27/02; F28B; F28B1/00; F28B1/02; F28D; F28D7/00; F28D7/16; F28D7/163; F28D7/1653; F28D7/1661; F28G; F28G13/00; F28G9/00; Y; Y10; Y10T; Y10T137/00; Y10T137/5544; Y10T137/5689
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
223 words
IN COMBINATION, A MULTIPASS TUBE AND SHELL HEAT EXCHANGER COMPRISING, TUBE STRUCTURE INCLUDING A PLURALITY OF TUBES PROVIDING FIRST AND SECOND FLUID PASSES, A TUBE SHEET TO WHICH SAID TUBES ARE CONNECTED AT LEAST AT ONE END, MEANS AT THE OPPOSITE END CONNECTING THE TUBES OF SAID FIRST PASS TO THE TUBES OF SAID SECOND PASS, A HOUSING CONNECTED TO SAID TUBE SHEET, MEANS DIVIDING SAID HOUSING INTO FIRST AND SECOND CHAMBERS, SAID FIRST CHAMBER BEING IN ALWAYS OPEN COMMUNICATION WITH SAID FIRST FLUID PASS AND SAID SECOND CHAMBER BEING IN ALWAYS OPEN COMMUNICATION WITH SAID SECOND FLUID PASS, SAID HOUSING HAVING A FLUID INLET PORT AND A FLUID OUTLET PORT, SAID MEANS INCLUDING VALVE MEANS DISPOSED WITHIN SAID HOUSING FOR SELECTIVELY CONTROLLING THE DIRECTION OF FLUID FLOW THROUGH SAID FIRST AND SECOND PASSES, SAID VALVE MEANS HAVING A FIRST POSITION IN WHICH SAID INLET PORT IS DISPOSED IN COMMUNICATION WITH SAID FIRST CHAMBER AND SAID OUTLET PORT IS DISPOSED IN COMMUNICCATION WITH SAID SECOND CHAMBER, AND A SECOND POSITION IN WHICH SAID INLET PORT IS DISPOSED IN COMMUNICATION WITH SAIDSECOND CHAMBER AND SAID OUTLET PORT IS DISPOSED IN COMMUNICATION WITH SAID FIRST CHAMBER, AND MEANS FOR MOVING SAID VALVE MEANS FOR SAID FIRST POSITION TO SAID SECOND POSITION, THEREBY TO REVERSE THE FLOW OF FLUID THROUGH SAID FIRST AND SECOND FLUID PASSES.
Claim 2
Dependent Claim
223 words
IN COMBINATION, A MULTIPASS TUBE AND SHELL HEAT EXCHANGER COMPRISING, TUBE STRUCTURE INCLUDING A PLURALITY OF TUBES PROVIDING FIRST AND SECOND FLUID PASSES, A TUBE SHEET TO WHICH SAID TUBES ARE CONNECTED AT LEAST AT ONE END, MEANS AT THE OPPOSITE END CONNECTING THE TUBES OF SAID FIRST PASS TO THE TUBES OF SAID SECOND PASS, A HOUSING CONNECTED TO SAID TUBE SHEET, MEANS DIVIDING SAID HOUSING INTO FIRST AND SECOND CHAMBERS, SAID FIRST CHAMBER BEING IN ALWAYS OPEN COMMUNICATION WITH SAID FIRST FLUID PASS AND SAID SECOND CHAMBER BEING IN ALWAYS OPEN COMMUNICATION WITH SAID SECOND FLUID PASS, SAID HOUSING HAVING A FLUID INLET PORT AND A FLUID OUTLET PORT, SAID MEANS INCLUDING VALVE MEANS DISPOSED WITHIN SAID HOUSING FOR SELECTIVELY CONTROLLING THE DIRECTION OF FLUID FLOW THROUGH SAID FIRST AND SECOND PASSES, SAID VALVE MEANS HAVING A FIRST POSITION IN WHICH SAID INLET PORT IS DISPOSED IN COMMUNICATION WITH SAID FIRST CHAMBER AND SAID OUTLET PORT IS DISPOSED IN COMMUNICCATION WITH SAID SECOND CHAMBER, AND A SECOND POSITION IN WHICH SAID INLET PORT IS DISPOSED IN COMMUNICATION WITH SAIDSECOND CHAMBER AND SAID OUTLET PORT IS DISPOSED IN COMMUNICATION WITH SAID FIRST CHAMBER, AND MEANS FOR MOVING SAID VALVE MEANS FOR SAID FIRST POSITION TO SAID SECOND POSITION, THEREBY TO REVERSE THE FLOW OF FLUID THROUGH SAID FIRST AND SECOND FLUID PASSES.
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) | 1968-10-11 | 1969-04-12 | 1969-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-11 | 1973-04-12 | 1973-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-11 | 1977-04-12 | 1977-10-12 | $7700.00 | Window Closed / Lapsed |