Patent US3375841A successfully refreshed from Google Patents.
US3375841A
Expired / Lapsed
US
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Fluid device
Assignee: Unisys Corp
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Filing: 1964-07-29
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Granted: 1968-04-02
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Expires: 1984-07-29
Abstract
No abstract record available.
Inventors
- 👤 Schonfeld Arnold
- 👤 John C Schulte
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:07
CPC Classifications
F; F15; F15C; F15C1/00; F15C1/08; Y; Y10; Y10T; Y10T137/00; Y10T137/206; Y10T137/2229; Y10T137/2251
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
IN A FLUID AMPLIFIER ELEMENT HAVING A PLURALITY OF FLUID-FLOW OUTLET PASSAGEWAYS, ANY ONE OF WHICH MAY HAVE A MAINSTREAM OF FLUID-FLOW DIVERTED THERETHROUGH, A DEVICE FOR PREVENTING FLUID BACK-UP OF SAID MAINSTREAM AND FOR PREVENTING UNDER CONDITIONS OF NO-BACK-UP THE EXISTENCE OF SPURIOUS AND FALSE FLUID-FLOW IN ANY OF SAID OUTLET PASSAGEWAYS OTHER THAN SAID MAINSTREAM CARRYING ONE, COMPRISING A PASSAGEWAY EXTENSION ASSOCIATED WITH EACH OF SAID OUTLET PASSAGEWAYS, EACH OF SAID PASSAGEWAY EXTENSIONS CROSSING ONE ANOTHER AT A COMMON POINT INTERMEDIATE THEIR LENGTHS TO THEREBY FORM A COMMON INTERSECTION, AND EACH OF SAID PASSAGEWAY EXTENSIONS HAVING A CONSTRUCTION FORMED THEREIN AT SAID INTERSECTION TO FORM A VENTURI IN EACH OF THE EXTENSIONS AT THE INTERSECTION WHEREBY SUBSTANTIALLY ALL OF SAID MAINSTREAM FLOWS OUT ONE OF SAID EXTENSIONS AND NONE OF SAID MAINSTREAM FLOWS OUT THE OTHER OF SAID EXTENSIONS.
Claim 2
Dependent Claim
141 words
IN A FLUID AMPLIFIER ELEMENT HAVING A PLURALITY OF FLUID-FLOW OUTLET PASSAGEWAYS, ANY ONE OF WHICH MAY HAVE A MAINSTREAM OF FLUID-FLOW DIVERTED THERETHROUGH, A DEVICE FOR PREVENTING FLUID BACK-UP OF SAID MAINSTREAM AND FOR PREVENTING UNDER CONDITIONS OF NO-BACK-UP THE EXISTENCE OF SPURIOUS AND FALSE FLUID-FLOW IN ANY OF SAID OUTLET PASSAGEWAYS OTHER THAN SAID MAINSTREAM CARRYING ONE, COMPRISING A PASSAGEWAY EXTENSION ASSOCIATED WITH EACH OF SAID OUTLET PASSAGEWAYS, EACH OF SAID PASSAGEWAY EXTENSIONS CROSSING ONE ANOTHER AT A COMMON POINT INTERMEDIATE THEIR LENGTHS TO THEREBY FORM A COMMON INTERSECTION, AND EACH OF SAID PASSAGEWAY EXTENSIONS HAVING A CONSTRUCTION FORMED THEREIN AT SAID INTERSECTION TO FORM A VENTURI IN EACH OF THE EXTENSIONS AT THE INTERSECTION WHEREBY SUBSTANTIALLY ALL OF SAID MAINSTREAM FLOWS OUT ONE OF SAID EXTENSIONS AND NONE OF SAID MAINSTREAM FLOWS OUT THE OTHER OF SAID EXTENSIONS.
References Cited (Backward Citations)
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Cited
US3235959A
Cited
US3208462A
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US3177888A
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US3181545A
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US3240221A
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US3143856A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-02 | 1971-10-02 | 1972-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-02 | 1975-10-02 | 1976-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-02 | 1979-10-02 | 1980-04-02 | $7700.00 | Window Closed / Lapsed |