Electric heating – Heating devices – Tool or instrument
Patent
1979-08-27
1982-05-11
Bartis, A.
Electric heating
Heating devices
Tool or instrument
15 27, 132 11R, 132 33R, 132 34R, 132 85, 132118, 219244, H05B 340, A45D 236, A46B 710
Patent
active
043295673
ABSTRACT:
A lockable rotatable heated curling brush which is used for styling and curling hair includes a rod housing which serves as a handle, an inner tube fixedly connected to said handle and protruding therefrom, a heater inside said inner tube electrically connected to a swivel cord, and an outer tube rotatably supported by said inner tube, said outer tube having a round brush on the outer surface thereof. The outer tube is held in the handle by a circular guide in front which mates with a notched flange at the rear of the outer tube. There is a spring latch device which locks or frees the outer tube so it can rotate. The inner tube within the outer tube is aluminum and is in heat conducting relationship with the heater and the outer tube. The heater is positioned in the inner tube such that the axial center of the heater is forward of the longitudinal center of the inner tube at a point which offsets the unequal heat loss rate to the atmosphere of the forward and rearward ends of the outer tube whereby maximum uniform heating of the outer tube and brush occurs. The preferred heater is a positive temperature coefficient (PTC) thermistor.
REFERENCES:
patent: 372092 (1887-10-01), Stansbury
patent: 2545885 (1951-03-01), Jackson
patent: 3533421 (1970-10-01), Mays
patent: 3578947 (1971-05-01), McNair
patent: 3947910 (1976-04-01), Akerman
patent: 4023578 (1977-05-01), Buhler
patent: 4024375 (1977-05-01), Olesen et al.
patent: 4029110 (1977-06-01), Hyland
patent: 4097718 (1978-06-01), Weise
patent: 4197608 (1980-04-01), Holley et al.
Fleischhauer Eugene T.
Kunz Raymond W.
Bartis A.
Clairol Incorporated
Mentis George A.
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