Heat treatment furnace

Details Heat treatment furnace Heat treatment furnace

1990-11-14

1992-02-18

Yuen, Henry C.

Heating

Work chamber having heating means

Having means by which work is progressed or moved mechanically

432 3, 432 76, 432123, 432137, F27D 2300, F27B 926

Patent

active

050889214

ABSTRACT:
An elongated, horizontal tunnel-type furnace for heat treating workpieces carried in succession therethrough. The furnace is of modular construction and comprises a series of contiguous individual modular sections that define a tunnel-type enclosure. Each modular section comprises a stationary lower enclosure section and an assembled vertically retractable upper enclosure section. The upper enclosure sections are supported along opposite sides by a plurality of spaced, free-standing lifting devices. A screw-jack is associated with each lifting device for raising and lowering the upper enclosure sections relative to the lower enclosure sections. The upper enclosure sections may be raised and lowered individually or joined together and moved as a unit.

REFERENCES:
patent: 1677002 (1928-07-01), Olson et al.
patent: 2856172 (1958-10-01), Kautz
patent: 2867428 (1959-01-01), Montagna
patent: 2869856 (1959-01-01), Greene

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