Electric resistance heating devices – Heating devices – Radiant heater
Reexamination Certificate
2005-04-12
2005-04-12
Fuqua, Shawntina (Department: 3742)
Electric resistance heating devices
Heating devices
Radiant heater
C392S418000, C219S390000, C219S405000, C219S411000, C118S724000, C118S725000, C118S050100
Reexamination Certificate
active
06879779
ABSTRACT:
A vacuum oven with heat transfer fluid conduits. The oven of the invention generally includes a shell into which a removable rack may be placed. The rack has at least one plate which may be heated or cooled by a plate fluid conduit in contact with the plate and through which a heating or cooling fluid may be passed. Work pieces may be loaded in the rack, the rack placed in the shell, the shell sealed, and a vacuum drawn within the shell. The work pieces loaded on the rack are primarily heated and cooled by conductive and radiant heat transfer because of the limited amount of thermally conductive gases within the shell.
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Brochure, “Magnetic Annealing Tool”, Despatch Industries, L.L.P., 6 pp. (date unknown, but believed to be early 1998).
Despatch Industries Limited Partnership
Fredrikson & Byron , P.A.
Fuqua Shawntina
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