Sheathed electric heating element assembly

Details Sheathed electric heating element assembly Sheathed electric heating element assembly

1988-11-21

1990-02-13

Pellinen, A. D.

Electric heating

Heating devices

Combined with container, enclosure, or support for material...

219331, 219523, H05B 348

Patent

active

049008978

ABSTRACT:
In a metallic sheathed electric heating element assembly having a resistance element, a sheath surrounding the resistance element, pulverulent electrically insulating material within the sheath and surrounding the resistance element, the insulating material being tightly compacted and extending within the sheath short of an open end thereof, and a terminal pin electrically and mechanically connected to an end of the resistance element within the compass of the sheath, the terminal pin is made in two parts, an inner part to which the resistance element is connected, and an outer part spaced from the inner part, and a thermal switch or cut off electrically connected to and in series between the inner and outer parts of the pin within the sheath but spaced toward the open end from the compacted insulating material, the thermal switch being in good thermal contact with the inner part of the terminal pin.

REFERENCES:
patent: 1911063 (1933-05-01), Daly
patent: 2854556 (1958-09-01), McOrlly
patent: 4156128 (1979-05-01), Craven
patent: 4390776 (1983-06-01), Yane et al.
patent: 4697069 (1987-09-01), Bleckmann

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