PTC hair roller

Details PTC hair roller PTC hair roller

1986-10-24

1988-12-13

Bartis, Anthony

Electric heating

Heating devices

Tool or instrument

132226, 132236, 219242, 219505, 219540, 219541, 338 22R, 338328, A45D 236, H05B 300, H05B 102, H01C 702

Patent

active

047912723

ABSTRACT:
A heat generating curling implement includes a generally cylindrical body member about which hair may be wound and containing two heat radiating U-shaped plates with interlinking base portions with a positive temperature coefficient heating element sandwiched between the inside surfaces of the interlinked base portions. Each plate has two heat radiating legs. All legs extend substantially in the same direction. The legs of both plates partially co-extend. The interlinking base portions do not contact one another. An electrode pin is in electrical contact through a contact plate to one of the radiating U-shaped plates. The electrode pin does not extend through the PTC element and does not extend through the base portion of the radiating plate. An electrode ring surrounds the electrode pin and is electrically insulated therefrom and electrically connected to the other radiating U-shaped plates through a second contact plate.

REFERENCES:
patent: 3375774 (1968-04-01), Fujimura et al.
patent: 3559658 (1971-02-01), Gemest
patent: 3617694 (1971-11-01), D'Entremont
patent: 3617695 (1971-11-01), D'Entremont
patent: 3632971 (1972-01-01), Flanagan
patent: 3673382 (1972-06-01), Gaffney et al.
patent: 3689736 (1972-09-01), Meyer
patent: 3973100 (1976-08-01), Flanagan
patent: 4045763 (1977-08-01), Miyamoto et al.
patent: 4147927 (1979-04-01), Pirotte
patent: 4284877 (1981-08-01), Abura et al.
patent: 4341949 (1982-07-01), Steimer et al.
patent: 4447705 (1984-05-01), Bullock

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