Industrial electric heating furnaces – Resistance furnace device – With heating element detail
Patent
1999-08-16
2000-08-29
Hoang, Tu Ba
Industrial electric heating furnaces
Resistance furnace device
With heating element detail
373131, H05B 366
Patent
active
061119083
ABSTRACT:
An electrical insulating and heating element support mechanism for a high temperature vacuum furnace having a support rod with an electrical insulating and support mechanism for connecting a heating element to the rod in an electrically non-connected position includes insulators and cup shaped shields each with a wall radially surrounding an insulator. The electrically non-connected shield wall is spaced from the heating element and the insulator radial surface but covers at least a portion of the insulator radial surface to protect the mechanism from deposition of conductive materials that could cause shorts that could damage the furnace and materials being treated in the furnace. The walls of the cup shaped shields can be shaped in a number of different ways, for example, cylindrical or flared, but desirably have a circular radial dimension. The shields are desirably made with graphite.
REFERENCES:
patent: 4259538 (1981-03-01), Jones
patent: 4425660 (1984-01-01), Jones
patent: 4559631 (1985-12-01), Moller
patent: 4608698 (1986-08-01), Moller et al.
patent: 5930285 (1999-07-01), Moller
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