Apparatus and process for firing ceramics

Details Apparatus and process for firing ceramics Apparatus and process for firing ceramics

1989-01-31

1990-02-06

Yuen, Henry C.

Heating

Heating or heat retaining work chamber structure

Door, cover or port

110173R, 219388, F27D 118, H05E 366

Patent

active

048985341

ABSTRACT:
A door assembly for a high temperature oven is disclosed, including a door frame having a cavity which is at least in part wedge-shaped and having apertures through the frame with a resilient seal surrounding the aperture. A door is located within the cavity, and moves in a generally vertical direction from an open position wherein the door is out of contact with the resilient seal and is displaced from the area between the apertures to provide unimpeded passage therethrough, to a closed position wherein the wedge shape causes the door to firmly seal against the resilient seal so that the substantial escape of gases through the closed door does not occur.

REFERENCES:
patent: 1534548 (1925-04-01), Slade
patent: 2254900 (1941-09-01), Lessmann
patent: 2262363 (1941-11-01), Hoop
patent: 2270484 (1942-01-01), Wallerius
patent: 2804855 (1957-09-01), Bergman
patent: 3410547 (1968-11-01), Bielefeldt
patent: 3782304 (1974-01-01), Balaz
patent: 4429641 (1984-02-01), Early

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