Electric heating – Heating devices – Combined with pressure application means
Patent
1981-12-22
1984-05-15
Bartis, A.
Electric heating
Heating devices
Combined with pressure application means
219240, 219449, 219505, 219516, 338 22R, 338 28, 374183, 374185, 374208, G01K 116, G01K 716, H05B 102
Patent
active
044490356
ABSTRACT:
An electric resistance heating device including a body having a metal mass and a sheathed electric heating element for heating the mass is provided with a temperature sensing thermistor designed for electronic temperature regulation. The thermistor together with the leads thereof is housed in a shrunk thermoplastic, e.g., PTFE, sheath and is inserted into a cavity within the mass closely approaching the heating element sheath through an orifice closed by a metal sealing plug having substantially the same composition and thermal characteristics as the mass. The cavity and the face of the plug are shaped to closely correspond to the sheath containing the thermistor and leads and any air spaces existing between the sheath, the mass and plug are filled with a silicone putty, such as silastene. The sealing plug is force fit within the orifice or inset therein by plastic deformation of the metallic mass.
REFERENCES:
patent: 2686250 (1954-08-01), Schroeder
patent: 3221284 (1965-11-01), Summerer
patent: 3286077 (1966-11-01), Radford et al.
patent: 3393296 (1968-07-01), Gambill
patent: 3456095 (1969-07-01), Fox
patent: 3696676 (1972-10-01), Butter
patent: 3701884 (1972-10-01), Finney
patent: 3732394 (1973-05-01), Cusworth
patent: 4230935 (1980-10-01), Meixmer
patent: 4322900 (1982-04-01), Hacker et al.
"Techniques for Measuring Surface Temperature", by G. G. Watson, Instrument Practice, vol. 20, Jun. 1966, pp. 517-524.
"Messung Von Oberflachentemperaturen mit Beruhrungsthermometern", by G. Teunis, Verein Deutscher Igenieure (VDI), vol. 112, 1966, pp. 103-108.
Bartis A.
SEB S. A.
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