Heating – Accessory means for holding – shielding or supporting work... – Support structure for heat treating ceramics
Patent
1983-02-23
1985-08-20
Camby, John J.
Heating
Accessory means for holding, shielding or supporting work...
Support structure for heat treating ceramics
219400, 432 3, F27D 500, F27D 116, A21B 100
Patent
active
045361533
ABSTRACT:
Disclosed is an improved hobbyist kiln containing one or more shelves each of which is constructed so as to have a hole located at about its geometric center. Additionally, the outside dimensions of the shelf are such that, on placing the shelf in the kiln, an annular space is provided between the perimeter of the shelf and the refractory wall of the kiln. The shelf hole in conjunction with the annular space provides a patch for thermal convection currents to cycle within the kiln, thereby evening out temperature extremes which would otherwise occur therein. The shelves may be provided in the greenware state with a refractory alumina kilnwash, the resulting composite being fired to yield an improved refractory shelf with a durable tightly-bonded protective surface coating.
REFERENCES:
patent: 585765 (1897-07-01), Jeffery
patent: 1877424 (1932-09-01), Fear
patent: 2512567 (1950-06-01), Milligan
patent: 3752643 (1973-08-01), Robinson
patent: 4215265 (1980-07-01), White
patent: 4259061 (1981-03-01), Dubetsky
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