Heater and method of making same

Details Heater and method of making same Heater and method of making same

1976-11-26

1978-09-05

Albritton, C. L.

Electrical resistors

Incased, embedded, or housed

Element in insulation with outer metallic sheath

29611, 338267, 338270, 338271, 338279, 338302, 338331, H01C 1028

Patent

active

041124103

ABSTRACT:
A heater comprising a metallic tubular sheath in which an elongate electrical center conductor is coaxially disposed therewithin. A fibrous, inorganic electrical insulation material is wrapped around the center conductor and an electrical resistance heating element surrounds the enwrapped center conductor, the heating element being coaxial with the center conductor and electrically connected thereto with the heating element and the conductor being adapted to be connected to a source of electrical power to energize the heating element. Other electrical insulation material is disposed between the heating element and the sheath to electrically insulate the heating element from the sheath and to provide a conductive heat transfer path between the heating element and the sheath. A method of manufacturing a heater is also disclosed.

REFERENCES:
patent: 2053933 (1936-09-01), Abbott
patent: 2808492 (1957-10-01), Yohe
patent: 3521352 (1970-07-01), Volker

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