Stoves and furnaces – Stove lids and tops – Stove mats
Patent
1976-08-17
1977-03-01
Favors, Edward G.
Stoves and furnaces
Stove lids and tops
Stove mats
126 39H, F24C 1510
Patent
active
040097048
ABSTRACT:
A cool-touch safety covering for the cooking surfaces of warming trays, hot lates and other cooking appliances. The covering is fibrous, springy or otherwise compressible under the weight of a pan or other cooking utensil and its contents. In the uncompressed state, the covering stores relatively little heat per unit volume and transfers the heat relatively poorly, so that it will not burn a finger or other body surface briefly contacting it, even though the covering is heated to 200.degree.-300.degree. C or higher. In the compressed state, the covering transfers heat relatively well, thereby permitting an ample flow of heat to the untensil and its food or other contents. In quantitative terms, the thermal inertia of the uncompressed covering should not exceed about (T.sub.h - 60).sup.-.sup.2 cal.sup.2 /sec-cm.sup.4 -deg C.sup.2, where T.sub.h is the maximum operating temperature of the appliance in deg C. The covering may include one or more of the following: a matted felt of asbestos, ceramic or other thermally stable fibers; a wool-like layer of ceramic, metal or other fibers; a rippled sheet of thermally stable plastic or metal; a sandwich of springs or rings between sheets of plastic or metal; or spaced-apart metal or plastic screens.
REFERENCES:
patent: 504156 (1893-08-01), Fletcher
patent: 689182 (1901-12-01), Haw
patent: 1007700 (1911-11-01), Irey
patent: 1356735 (1920-10-01), Parkhurst
patent: 2035970 (1936-03-01), MacIldowie
patent: 2054687 (1936-09-01), Weiland et al.
Englert Alvin J.
Favors Edward G.
Pawlikowski Eugene J.
The United States of America as represented by the Secretary of
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