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Hair roller heating device with thermomagnetic roller temperature control

  • US 4,691,095 A
  • Filed: 08/21/1985
  • Issued: 09/01/1987
  • Est. Priority Date: 09/17/1984
  • Status: Expired due to Fees
First Claim
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1. A hair styling device composed of a hair roller and heatable spindle structure for heating said hair roller,said hair roller comprising a jacket containing a heat storing material and structure forming a heat exchange surface for supplying heat to the heat storing material and defining a conical inner chamber open at its larger end,said heatable spindle structure adapted to be inserted into mating heat exchange engagement with said inner chamber of said roller and having structure defining a conical outer surface matching the surface of the conical inner chamber of said hair roller, biasing means associated with one of said roller and spindle structure for lifting said hair roller out of heating engagement with said heatable spindle structure,and holding means for stressing said biasing means when said hair roller is placed on said heatable spindle and preventing said hair roller from being lifted out of engagement with said heatable spindle structure by the action of said stressed biasing means, said holding means comprising a body of ferromagnetic material disposed on said hair roller and a magnet, said body of ferromagnetic material being moved into the holding range of said magnet in response to said hair roller being placed on said heatable spindle structure to hold said biasing means in its stressed condition, the Curie temperature of said body of ferromagnetic material corresponding to the set temperature of said hair roller so as to release said biasing means at said temperature, and means for heating said heatable spindle structure.

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