Electric heating – Metal heating – Of cylinders
Patent
1982-06-25
1985-01-08
Leung, P. H.
Electric heating
Metal heating
Of cylinders
219 1049R, 219 1079, 219 1077, 219518, 219227, 219242, 219502, 433 28, 433 32, 433 61, 340687, 250215, 250578, H05B 614, A61C 1900
Patent
active
044928408
ABSTRACT:
An induction heating process and apparatus for flameless heating of metallic dental laboratory tools, medical instruments, and the like. The induction heating coil is energized by placement of instruments within the annular zone formed by the windings of the coil, and differential light sensors are utilized to compensate for variations in ambient light levels.
REFERENCES:
patent: 1789475 (1931-01-01), Powell
patent: 2620433 (1952-12-01), Denneen et al.
patent: 3422273 (1969-01-01), Biernson
patent: 3436171 (1969-04-01), Weichselbaum et al.
patent: 3783276 (1974-01-01), Allington
patent: 4278870 (1981-07-01), Carleton et al.
patent: 4308011 (1981-12-01), Liefke
Haugen Orrin M.
Leung P. H.
Nikolai Thomas J.
Tschida Douglas L.
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