Electric heating – Heating devices – With heating unit structure
Patent
1978-10-20
1980-12-23
Mayewsky, Volodymyr Y.
Electric heating
Heating devices
With heating unit structure
13 25, 219354, 219553, 338316, 338322, H05B 308
Patent
active
042412927
ABSTRACT:
A resistive heater comprising an emitter, including a hot zone center section and lower temperature end sections, disposed within a protective tube with the emitter and protective tube being mounted within end caps with a spring mechanism provided to allow for the difference in expansion and contraction of the emitter and protective tube during heating and cooling.
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patent: 3538231 (1970-11-01), Newkirk et al.
patent: 3875477 (1975-04-01), Fredriksson et al.
patent: 3969943 (1976-06-01), Andersen
Anderson, Sr. Glenn A.
Kreick John R.
Etlinger Louis
Mayewsky Volodymyr Y.
Sanders Associates Inc.
Seligman Richard I.
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