Heating device for rapidly heating a single hair roller
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United States of America Patent
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Mar 3, 1987
Grant Date -
N/A
app pub date -
Apr 15, 1985
filing date -
Apr 15, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A portable hairsetter appliance for heating a single hair roller. The hairsetter comprises a cylindrical housing having an axially aligned and longitudinally extending high voltage electric resistance heating element encapsulated in a quartz envelope for heating a single hair roller inserted into the cylindrical housing. The weight of the roller closes an electrical circuit and the roller is heated to a predetermined temperature whereupon a thermoplastic bimetallic disc changes its concavity to open the electrical circuit. A safety means is provided to automatically open the electrical circuit if the roller is pressed into the housing with a force greater than its own weight.
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