Hair curler with plastic integral ring

Claim 1

A hair curler adapted for convenient and safe handling and for more efficient retention of wound hair on the outer surface of the curler comprising a substantially tubular outer casing having side walls, a closed end and an opposite open end, and an inner heat-accumulating container disposed within said outer casing and having an axis extending parallel to the longitudinal axis of said tubular casing, said inner container comprising an inner wall and an outer wall forming a hollow cylindrical heat conductive sleeve having a central cavity adapted to permit the insertion of a heating element in heat conductive contact, said outer wall having a terminal portion bent over said inner wall to form end edge sections, said sleeve containing a heat-absorbing material, said outer casing side walls having end edge sections bent inwardly over the end edge sections of the inner container to form an integral annular ring along the inner wall of the heat-accumulating body thereby joining the outer casing to the inner container, wherein said bent end sections are comprised of form-stabilizing embossments said curler further comprising opposite radial end flanges and disposed between said end flanges a central section having projections on its outer surface, said end flanges having a diameter greater than the diameter within said central section.