Thin film electric heater, and method and apparatus for injectio

Details Thin film electric heater, and method and apparatus for injectio Thin film electric heater, and method and apparatus for injectio

1996-05-28

1998-01-06

Walberg, Teresa J.

Electric heating

Heating devices

With heating unit structure

338308, 425547, H05B 344, H01C 1012, B29C 4500

Patent

active

057057931

ABSTRACT:
A thin film electric heater employs voltage and current suppressed below values of an allowable voltage and an allowable current. The thin film electric heater includes a thin film electric resistor to be formed directly on a surface of an object to be heated and is energized to effect heating. The resistor has a surface resistivity r, expressed by r=.rho./t (where .rho. is the volume resistivity of the thin film electric resistor and t is the film thickness of the thin film electric resistor), within a range to achieve the heating function of the thin film electric heater while the values of voltage and current applied to the thin film electric heater are suppressed below the values of the allowable voltage and the allowable current.

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patent: 5155340 (1992-10-01), Morita et al.
patent: 5408844 (1995-04-01), Stokes
patent: 5569474 (1996-10-01), Kitaichi et al.

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