Electric heating – Heating devices – With heater-unit housing – casing – or support means
Patent
1979-09-12
1981-07-28
Mayewsky, Volodymyr Y.
Electric heating
Heating devices
With heater-unit housing, casing, or support means
174 40CC, 138 33, 219211, 219301, 219528, 219530, 219544, 219549, 219541, 338212, 339103C, H05B 358
Patent
active
042812380
ABSTRACT:
A tubular jacket heater having a C-wise radial cross section with an aperture extending in a parallel direction to the axis is proposed which is used to envelop and preheat a tubular lamp used, for example, in a electrophotographic copying machine. The heater is composed of an inner layer made of an electrically insulating rubbery elastomer, an outer layer also made of an electrically insulating rubbery elastomer and a flexible heater element sandwiched by and entending between the inner and the outer insulating layers. The rubbery elastomer recommended is a silicone rubber with a specified hardness.
Different from conventional similar tubular jacket heaters in which the insulating layers are made of a rather rigid plastic resin such as a polycarbonate resin, the inventive heater has an excellent adaptability to the outer surface of the tubular lamp inserted therein so that a greatly improved efficiency of the heater is obtained.
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patent: 3696233 (1972-10-01), Pulsifer
patent: 3872281 (1975-03-01), Krieg et al.
patent: 3968348 (1976-07-01), Stanfield
Nakano Takaaki
Noma Hideyuki
Mayewsky Volodymyr Y.
Shin-Etsu Polymer Co. Ltd.
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