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Vehicle fluid heating system

  • US 6,851,624 B1
  • Filed: 10/11/2002
  • Issued: 02/08/2005
  • Est. Priority Date: 10/02/2002
  • Status: Expired due to Fees
First Claim
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1. Apparatus for providing a heated fluid to a vehicle surface comprising:

  • a) an inlet port for receiving an amount of fluid;

    b) an outlet port for dispensing an amount of heated fluid;

    c) an electrically conductive tube including two tubes of dissimilar material coupled together through which fluid passes from the inlet port to the outlet port for heating fluid passing through said two tubes as it passes from the inlet port and the outlet port; and

    d) a control circuit for energizing at least a portion of the electrically conductive tube with a voltage to create an electric potential drop across said portion of the electrically conductive tube to cause current to flow in walls of said tube to heat the electrically conductive tube and the fluid passing through said electrically conductive tube from the inlet to the outlet.

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