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Heated automobile mirror

  • US 4,237,366 A
  • Filed: 03/19/1979
  • Issued: 12/02/1980
  • Est. Priority Date: 03/19/1979
  • Status: Expired due to Term
First Claim
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1. A defogging mirror unit comprising a thermally conducting heat-distributing plate material formed to provide a recess in part of the plate material to be accessible from one side of the plate material, an electrical resistance heater of a material of positive temperature coefficient of resistivity having one side thereof mounted on said one side of the plate material within the recess in thermally and electrically conducting relation to the plate material, means electrically connected to the opposite side of the resistance heater for connecting the heater in an electrical circuit to energize the heater, a reflecting member having a reflecting surface, and means securing the reflecting member in heat transfer relation to said one side of the plate material extending over the recess for enclosing the heater therebetween in heat-transfer relation to the plate material for heating the plate material to distribute heat from the heater to the reflecting member for defogging the reflecting surface thereof.

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