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US3702122A Expired / Lapsed US ⏱️ 0.0 years remaining

Liquid level controlling apparatus

Assignee: Toyota Motor Corp
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Filing: 1970-12-15
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Granted: 1972-11-07
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Expires: 1990-12-15
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Abstract

Abstract A WALL ATTACHMENT LOGIC ELEMENT IS INTERPOSED BETWEEN A FUEL TANK AND A FUEL REGULATING CONTAINER FOR THE PURPOSE OF CONTROLLING THE LIQUID LEVEL IN SAID FUEL REGULATING CONTAINER, AND WHEN THE LIQUID LEVEL THEREIN HAS FALLEN BELOW A SET LEVEL, A PRESSURE VARIATION OCCURS AT THE POINT OF DIVERGENCE OF T HE DUCTS FORMED IN SAID FLUIDICS OR FLUIDIC ELEMENT TO DIRECT THE LIQUID BEING DELIVERED FROM A FUEL PUMP SO AS TO BE INTRODUCED INTO A CONDUIT LEADING T O SAID CONTAINER, WHEREAS WHEN THE LIQUID LEVEL HAS RISEN ABOVE SAID SET LEVEL, THE LIQUID PASSES THROUGH A SEPARATE DUCT IN SAID FLUIDICS AND IS RETURNED TO SAID FUEL TANK THROUGH A RETURN PIPE, AND CONCURRENTLY THE LIQUID IN SAID CONTAINER IS SUCKED UP AND DELIVERED INTO THE PIPE, WHEREBY THE SURFACE OF THE LIQUID IN THE CONTAINER MAY BE MAINTAINED AT THE SET LEVEL.

Inventors

  • 👤 Masanori Hanaoka

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-07 23:20
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/14; G01F23/16; G01F23/161; F; F02; F02M; F02M17/00; F02M17/02; Y; Y10; Y10S; Y10S261/00; Y10S261/69; Y10T; Y10T137/00; Y10T137/206; Y10T137/2065; Y10T137/2071; Y10T137/2229

Claims Analysis

Total Claims: 0
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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) 1975-11-07 1976-05-08 1976-11-07 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-11-07 1980-05-08 1980-11-07 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-11-07 1984-05-08 1984-11-07 $7700.00 Window Closed / Lapsed

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