WO2003003384A3 - Fuel level sensing system - Google Patents

Fuel level sensing system Download PDF

Info

Publication number
WO2003003384A3
WO2003003384A3 PCT/US2002/019976 US0219976W WO03003384A3 WO 2003003384 A3 WO2003003384 A3 WO 2003003384A3 US 0219976 W US0219976 W US 0219976W WO 03003384 A3 WO03003384 A3 WO 03003384A3
Authority
WO
WIPO (PCT)
Prior art keywords
pattern
electrical contact
conductive traces
deposited
container
Prior art date
Application number
PCT/US2002/019976
Other languages
French (fr)
Other versions
WO2003003384A2 (en
Inventor
Eoin O'regan
Original Assignee
Bourns Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bourns Inc filed Critical Bourns Inc
Priority to AU2002322305A priority Critical patent/AU2002322305A1/en
Publication of WO2003003384A2 publication Critical patent/WO2003003384A2/en
Publication of WO2003003384A3 publication Critical patent/WO2003003384A3/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/30—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats
    • G01F23/32—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats using rotatable arms or other pivotable transmission elements
    • G01F23/36—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats using rotatable arms or other pivotable transmission elements using electrically actuated indicating means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C10/00—Adjustable resistors
    • H01C10/30—Adjustable resistors the contact sliding along resistive element
    • H01C10/32—Adjustable resistors the contact sliding along resistive element the contact moving in an arcuate path

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Level Indicators Using A Float (AREA)

Abstract

A variable resistor sensing unit for measuring liquid level in a container through interaction with a sliding electrical contact operating in conjunction with a float includes a ceramic substrate, a first conductor pattern deposited on the substrate, a pattern of resistive ink making electrical contact with the first conductive pattern, a second pattern of conductive traces deposited over the pattern of resistive ink, and an electrically insultaing material selectively deposited on exposed areas of the first conductor pattern, such that a portion of the second pattern of conductive traces defines a pattern or track of conductive traces over which the sliding electrical contact travels. The electrical resistance of the variable resistor sensing unit indicates liquid level in the container.
PCT/US2002/019976 2001-06-28 2002-06-25 Fuel level sensing system WO2003003384A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002322305A AU2002322305A1 (en) 2001-06-28 2002-06-25 Fuel level sensing system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US89478201A 2001-06-28 2001-06-28
US09/894,782 2001-06-28

Publications (2)

Publication Number Publication Date
WO2003003384A2 WO2003003384A2 (en) 2003-01-09
WO2003003384A3 true WO2003003384A3 (en) 2003-03-20

Family

ID=25403516

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2002/019976 WO2003003384A2 (en) 2001-06-28 2002-06-25 Fuel level sensing system

Country Status (2)

Country Link
AU (1) AU2002322305A1 (en)
WO (1) WO2003003384A2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007021027A1 (en) * 2007-05-04 2008-11-06 Continental Automotive Gmbh Signal transmitter for a level sensor
JP5711599B2 (en) * 2010-10-22 2015-05-07 矢崎総業株式会社 Liquid level detector
DE102010054670B4 (en) * 2010-12-15 2013-06-13 Continental Automotive Gmbh level sensor
JP5985159B2 (en) * 2011-05-20 2016-09-06 矢崎総業株式会社 Electrode structure of liquid level sensor and method for manufacturing the same
WO2020011871A1 (en) * 2018-07-10 2020-01-16 Vitesco Technologies GmbH Signal transmitter for a fill level sensor of a container of a motor vehicle, and method for producing a signal transmitter for a fill level sensor of a container of a motor vehicle

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2048495A (en) * 1979-04-26 1980-12-10 Plessey Co Ltd Liquid level sensor
US4318075A (en) * 1979-08-13 1982-03-02 Vdo Adolf Schindling Ag Thick-film potentiometer
US4557144A (en) * 1982-09-27 1985-12-10 Fiat Auto S.P.A. Electric level sensor for motor vehicle fuel tanks
US4642602A (en) * 1984-07-03 1987-02-10 Robert Bosch Gmbh Electric potentiometer
EP0290302A2 (en) * 1987-04-06 1988-11-09 Jaeger Measuring device comprising a rheostat-type transducer, particularly for gauging the fuel in the tank of an automotive vehicle
EP0493339A1 (en) * 1990-12-21 1992-07-01 SICEB S.p.A. Electrical level indicator for fuel tanks of motor vehicles and similar applications
EP0789231A2 (en) * 1996-02-09 1997-08-13 General Motors Corporation Fuel system low current rheostat
EP1061345A1 (en) * 1998-10-30 2000-12-20 Nippon Seiki Co., Ltd. Level indicator and method of manufacturing conductor electrode of level indicator
US6212950B1 (en) * 1996-05-09 2001-04-10 Cts Corporation Glass interlaced fuel system low current rheostat

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2048495A (en) * 1979-04-26 1980-12-10 Plessey Co Ltd Liquid level sensor
US4318075A (en) * 1979-08-13 1982-03-02 Vdo Adolf Schindling Ag Thick-film potentiometer
US4557144A (en) * 1982-09-27 1985-12-10 Fiat Auto S.P.A. Electric level sensor for motor vehicle fuel tanks
US4642602A (en) * 1984-07-03 1987-02-10 Robert Bosch Gmbh Electric potentiometer
EP0290302A2 (en) * 1987-04-06 1988-11-09 Jaeger Measuring device comprising a rheostat-type transducer, particularly for gauging the fuel in the tank of an automotive vehicle
EP0493339A1 (en) * 1990-12-21 1992-07-01 SICEB S.p.A. Electrical level indicator for fuel tanks of motor vehicles and similar applications
EP0789231A2 (en) * 1996-02-09 1997-08-13 General Motors Corporation Fuel system low current rheostat
US6212950B1 (en) * 1996-05-09 2001-04-10 Cts Corporation Glass interlaced fuel system low current rheostat
EP1061345A1 (en) * 1998-10-30 2000-12-20 Nippon Seiki Co., Ltd. Level indicator and method of manufacturing conductor electrode of level indicator

Also Published As

Publication number Publication date
AU2002322305A1 (en) 2003-03-03
WO2003003384A2 (en) 2003-01-09

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