Apparatus for controlling gas flows in vacuum furnaces

Details Apparatus for controlling gas flows in vacuum furnaces Apparatus for controlling gas flows in vacuum furnaces

1990-03-29

1991-07-30

Yuen, Henry C.

Heating

Work chamber having heating means

Combustion products heat work by contact

432205, 432152, 415157, 415148, F27B 322

Patent

active

050356119

ABSTRACT:
Two concentric and relatively displaceable cylinders mounted on the center axis of a vacuum furnace between its load chamber and its blower serve to control the gas flows in said furnace, where said gas flows are used to heat and cool the load portions.

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patent: 4265592 (1981-05-01), Canlini
patent: 4553404 (1985-11-01), Malchow et al.
patent: 4560348 (1985-12-01), Moller
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patent: 4643639 (1987-02-01), Caine
patent: 4830610 (1989-05-01), Hemsath
patent: 4836776 (1989-06-01), Jomain
patent: 4854860 (1989-08-01), Hangath
patent: 4859140 (1989-08-01), Passadore
patent: 4891008 (1990-01-01), Hemsath
patent: 4906182 (1990-03-01), Moller

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