GB1518492A - Liquid level warning device - Google Patents

Liquid level warning device

Info

Publication number
GB1518492A
GB1518492A GB460877A GB460877A GB1518492A GB 1518492 A GB1518492 A GB 1518492A GB 460877 A GB460877 A GB 460877A GB 460877 A GB460877 A GB 460877A GB 1518492 A GB1518492 A GB 1518492A
Authority
GB
United Kingdom
Prior art keywords
light
liquid level
lamp
light guides
warning device
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
GB460877A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ford Motor Co Ltd
Ford Motor Co
Original Assignee
Ford Motor Co Ltd
Ford Motor Co
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 Ford Motor Co Ltd, Ford Motor Co filed Critical Ford Motor Co Ltd
Priority to GB460877A priority Critical patent/GB1518492A/en
Publication of GB1518492A publication Critical patent/GB1518492A/en
Expired legal-status Critical Current

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
    • G01F23/22—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 measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • G01F23/28—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 measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
    • G01F23/284—Electromagnetic waves
    • G01F23/292—Light, e.g. infrared or ultraviolet
    • G01F23/2921—Light, e.g. infrared or ultraviolet for discrete levels
    • G01F23/2922—Light, e.g. infrared or ultraviolet for discrete levels with light-conducting sensing elements, e.g. prisms
    • G01F23/2925—Light, e.g. infrared or ultraviolet for discrete levels with light-conducting sensing elements, e.g. prisms using electrical detecting means

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

1518492 Liquid level indication FORD MOTOR CO Ltd 4 Feb 1977 04608/77 Heading G1H A liquid level warning device comprises a light source 10, fibre optic light guides 14, each directing light on to a polished surface 22a of a block 22 of transparent material at an angle such that the light is totally internally reflected when the surface is in air and principally refracted when in a liquid, and further light guides 24, for rendering the reflected light visible to an observer. In a motor vehicle, the block 22 is located in the brake fluid or oil reservoir and the lamp 10 behind a display panel 20. The lamp is mounted within a spherical housing 12 from which light guides 14, 16 extend; the latter allows the observer to check that the lamp is operating. The light guides 16, 24 terminate in lenses 26. The light source may be pulsed; surface 22b may be a mirror.
GB460877A 1977-02-04 1977-02-04 Liquid level warning device Expired GB1518492A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB460877A GB1518492A (en) 1977-02-04 1977-02-04 Liquid level warning device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB460877A GB1518492A (en) 1977-02-04 1977-02-04 Liquid level warning device

Publications (1)

Publication Number Publication Date
GB1518492A true GB1518492A (en) 1978-07-19

Family

ID=9780374

Family Applications (1)

Application Number Title Priority Date Filing Date
GB460877A Expired GB1518492A (en) 1977-02-04 1977-02-04 Liquid level warning device

Country Status (1)

Country Link
GB (1) GB1518492A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0024527A2 (en) * 1979-08-01 1981-03-11 Endress u. Hauser GmbH u.Co. Arrangement for measuring the level of the bath in a casting plant, in particular in the mould of a continuous-casting plant
DE3246340A1 (en) * 1982-12-15 1984-06-20 Westfälische Metall Industrie KG Hueck & Co, 4780 Lippstadt DEVICE FOR MEASURING AND MONITORING THE LEVEL OF A LIQUID CONTAINER
DE3247192A1 (en) * 1982-12-21 1984-07-05 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., 8000 München Fibre-optic liquid-level measuring device
EP0245563A1 (en) * 1986-04-24 1987-11-19 Equipement Industriel Normand Optico-electronic level detector with double pick-up elements
WO1989003978A1 (en) * 1988-03-22 1989-05-05 Conax Buffalo Corporation Optical liquid level sensor
US4857894A (en) * 1988-06-27 1989-08-15 The United States Of America As Represented By The Secretary Of The Navy Liquid level measurement system for analog and digital readout
EP0972744A2 (en) * 1998-07-14 2000-01-19 Bayer Corporation Automatic decapper
EP1752743A1 (en) * 2005-08-11 2007-02-14 Liquip International Pty Limited An improved liquid level sensor
DE102018205336A1 (en) 2018-04-10 2019-10-10 Ford Global Technologies, Llc Tank unit for a motor vehicle

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0024527A2 (en) * 1979-08-01 1981-03-11 Endress u. Hauser GmbH u.Co. Arrangement for measuring the level of the bath in a casting plant, in particular in the mould of a continuous-casting plant
EP0024527A3 (en) * 1979-08-01 1981-10-28 Endress u. Hauser GmbH u.Co. Arrangement for measuring the level of the bath in a casting plant, in particular in the mould of a continuous-casting plant
DE3246340A1 (en) * 1982-12-15 1984-06-20 Westfälische Metall Industrie KG Hueck & Co, 4780 Lippstadt DEVICE FOR MEASURING AND MONITORING THE LEVEL OF A LIQUID CONTAINER
FR2538106A1 (en) * 1982-12-15 1984-06-22 Westfaelische Metall Industrie DEVICE FOR MEASURING AND MONITORING THE LEVEL IN A LIQUID RESERVOIR
GB2133876A (en) * 1982-12-15 1984-08-01 Westfaelische Metall Industrie Apparatus for measuring or monitoring the fullness of a liquid container
DE3247192A1 (en) * 1982-12-21 1984-07-05 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., 8000 München Fibre-optic liquid-level measuring device
EP0245563A1 (en) * 1986-04-24 1987-11-19 Equipement Industriel Normand Optico-electronic level detector with double pick-up elements
WO1989003978A1 (en) * 1988-03-22 1989-05-05 Conax Buffalo Corporation Optical liquid level sensor
US4998022A (en) * 1988-03-22 1991-03-05 Conax Buffalo Corporation Optical liquid level sensor using a polytetrafluoroethylene perfluoroalkoxy material
US4857894A (en) * 1988-06-27 1989-08-15 The United States Of America As Represented By The Secretary Of The Navy Liquid level measurement system for analog and digital readout
EP0972744A2 (en) * 1998-07-14 2000-01-19 Bayer Corporation Automatic decapper
EP0972744A3 (en) * 1998-07-14 2000-08-02 Bayer Corporation Automatic decapper
US6257091B1 (en) 1998-07-14 2001-07-10 Bayer Corporation Automatic decapper
EP1752743A1 (en) * 2005-08-11 2007-02-14 Liquip International Pty Limited An improved liquid level sensor
DE102018205336A1 (en) 2018-04-10 2019-10-10 Ford Global Technologies, Llc Tank unit for a motor vehicle

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Legal Events

Date Code Title Description
PS Patent sealed
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee