Electric heating – Heating devices – With heater-unit housing – casing – or support means
Patent
1987-08-05
1988-09-13
Shaw, Clifford C.
Electric heating
Heating devices
With heater-unit housing, casing, or support means
219552, 338316, H05B 306
Patent
active
047711663
ABSTRACT:
A vacuum furnace has a heating chamber heated by metal strip electric heater elements. The elements have insulated mechanical support between their ends to hold them in position in the furnace. Support is provided by assemblies having spaced apart mounting assemblies with a rigid bridge compliantly mounted therebetween. The heater strip is compliantly connected to the bridge. Each mounting assembly has a metal post connected to the furnace heating chamber and surrounded by a ceramic sleeve. The ceramic sleeve is surrounded by two ceramic tubes which hold an end of the bridge therebetween.
REFERENCES:
patent: 3737553 (1973-06-01), Kreider
patent: 3798417 (1974-03-01), Bittner
patent: 3812276 (1979-05-01), Cyrway
patent: 4056678 (1981-06-01), Bea II
Bone Harold M.
Grier John K.
Jhawar Suresh C.
McGuire Dane T.
Mercer Michael T.
Grier-McGuire Inc.
Lateef M. M.
Shaw Clifford C.
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