US 4,061,898 A · Heat cap

Abstract

A heat cap for reducing processing time of permanent waves for the hair includes a cap which fits over the head, and a thermostatically controlled electrical heating element inside the cap for applying a selected heat distribution pattern to thermally-activated permanent wave solutions applied to the hair. The heating element comprises an electrical resistance heating film, preferably a meander pattern of conductive metal foil supported by a flexible, high temperature-resistant, fibrous dielectric sheet, such as aramid paper. The conductor develops a selected heat distribution pattern to be developed within the cap which, in turn, produces a generally uniform rate of heat processing for the permanent wave. The cap opens and closes along a pair of splits in the temple regions of the cap. Fasteners, preferably cooperating sections of Velcro material, are located along opposite sides of each split and are used to releasably close selected overlapping portions of the cap adjacent each split so the cap will closely conform to the size and shape of the head and the permanent wave structure to apply heat uniformly to all rollers in the permanent wave.

Claims43

Dependent claims

A hair processing cap for applying heat to hair on the head of a human being comprising:

flexible cap means having an outer cover, an inner liner, and a hollow interior between the outer cover and the inner liner;
the cap means having a generally spherically-shaped closed position to conform to the shape of the head and to cover the area of the head within the hairline, the cap means in said closed position having a lower peripheral edge encircling the head in the temple area thereof;
means for opening the cap comprising an elongated first split extending inwardly from the peripheral edge at one side of the cap, and an elongated second split extending inwardly from the peripheral edge at an opposite side of the cap;
each split forming a separate flexible and independently movable flap;
fastening means on each flap;
and cooperating fastening means located on a portion of the cap means adjacent each respective flap, the fastening means enabling the flaps to be selectively attached to different areas of the cap in the vicinity of the first and second splits to vary the three-dimensional contour of the cap means to conform to the shape of the head;
and
electrical heating means in the interior of the cap means and disposed over a substantial area of the cap means for directing heat outwardly to the portion of the head covered by the cap.

5 more elements

Dependencies are inferred from the claim text.

Heat cap

Life of this patent

Heat cap

Life of this patent

Abstract

Claims43