Electric heating – Heating devices – Combined with container – enclosure – or support for material...
Patent
1978-01-16
1981-01-27
Envall, Jr., Roy N.
Electric heating
Heating devices
Combined with container, enclosure, or support for material...
219415, 13 20, 13 25, 425405H, H05B 300
Patent
active
042477557
ABSTRACT:
An apparatus for treating a workpiece at elevated temperatures and pressures comprising an elongate cylindrical pressure vessel. Within the pressure vessel a hearth sits upon a pedestal. Heating elements are circumferentially spaced about the hearth. A heat insulating hood separates the workpiece from the pressure vessel. A cylindrical reflecting shield separates the heating element from the insulating hood.
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patent: 3004090 (1961-10-01), Donovan et al.
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patent: 3548062 (1970-12-01), Smith, Jr.
patent: 3571850 (1971-03-01), Pohoto
patent: 3598378 (1971-08-01), Lundstrom
patent: 3961905 (1976-06-01), Rice
Smith, Jr. Charles W.
Walker William H.
Zimmerman Franz X.
Autoclave Engineers, Inc.
Envall Jr. Roy N.
Roskoski Bernard
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