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ELECTRICALLY HEATED HAIR ROLLER WITH SELF-CONTAINED POWER SOURCE

  • US 3,603,765 A
  • Filed: 10/22/1969
  • Issued: 09/07/1971
  • Est. Priority Date: 10/22/1969
  • Status: Expired due to Term
First Claim
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1. A hair roller comprising a hollow tube about which hair may be wound, an electrically insulated resistive heating element extending about the wall of at least a portion of said tube, said tube including means for supporting a battery in a location within the hollow interior thereof with at least a portion of the battery positioned in said portion of the tube provided with said heating element and including a heat insulating zone substantially coextensive with said portion of the battery and at least one sixteenth inch thick, said zone having a thermal conductivity no greater than 0.003 cal./(sec.)(cm.2)(*C./cm.) and being disposed between said heating element and said battery location, and means for electrically connecting said heating element to a battery so supported.

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