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Device for level and/or temperature control of liquids

  • US 3,882,967 A
  • Filed: 01/15/1973
  • Issued: 05/13/1975
  • Est. Priority Date: 01/15/1972
  • Status: Expired due to Term
First Claim
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1. An installation for the level and/or temperature control of liquids in vehicles with the use of temperature dependent resistance means, comprising a plurality of sensor means, each of said sensor means including said resisTance means being arranged at predetermined points in the liquid to be controlled which is contained in a vehicle container, at least one electronic threshold switching means, control means responsive to at least operating level and/or temperature parameters of the vehicle for selectively closing switching means for connecting at least one of said sensor means with at least one of said electronic threshold switching means in accordance with predetermined input signal values of the operating parameters for ensuring that an unequivocal signal indicative of level and/or temperature of the liquid is produced by said connected sensor means via said electronic threshold switching means for application to an indicating means and/or controlling means under all operating signal valve parameters of the vehicle irrespective of whether the engine is running or the position of the vehicle.

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