Open coil electric heaters

Details Open coil electric heaters Open coil electric heaters

1977-12-27

1979-03-13

Mayewsky, Volodymyr Y.

Electric heating

Heating devices

With heater-unit housing, casing, or support means

219375, 219536, 219545, 219550, 219552, 338210, 338317, 338318, H05B 306

Patent

active

041444450

ABSTRACT:
An open coil electric heater wherein the resistance conductor is supported on a frame. The resistance conductor in this instance, instead of being in the form of a single coiled wire, is composed of a plurality of strands of wire so as to reduce the cost of the resistance conductor while providing adequate surface area. The strands of fine wire or flat ribbon wire are braided into a rope which is formed into a series of reaches in customary manner. At least one of the strands is of a material which will provide strength to the wires that primarily generate the heat and thereby prevent sagging of such wires between wire supports. In a preferred form, the wires are loosely braided to form wide open spaces and insulated support members are projected through certain of the open spaces to support the strands in predetermined position.

REFERENCES:
patent: 1393325 (1921-10-01), Smith
patent: 1510125 (1924-09-01), Woodford
patent: 1670075 (1928-05-01), McComsey
patent: 1855092 (1932-04-01), Browne
patent: 2206934 (1940-07-01), Barrans et al.
patent: 2321021 (1943-06-01), Dyer, Jr.
patent: 2812409 (1957-11-01), Jones et al.
patent: 3612822 (1971-10-01), Edin
patent: 3816706 (1974-06-01), Meywald
patent: 3835435 (1974-09-01), Seel
patent: 3860789 (1975-01-01), Maake

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