Electrical heating element comprising a helix of wire wound on a

Details Electrical heating element comprising a helix of wire wound on a Electrical heating element comprising a helix of wire wound on a

1977-09-16

1979-07-31

Mayewsky, Volodymyr Y.

Electric heating

Heating devices

With heating unit structure

219536, 219541, 219552, 338218, 338286, 339258R, 339258P, H05B 306

Patent

active

041631463

ABSTRACT:
A heating element comprises a resistance heating wire formed with closely adjacent zigzag loops and wound helically on an insulating plate or a pair of such plates mounted crosswise and possibly narrowing conically towards one end. Opposite loops engage the respective edges of such insulating plate, possibly in notches in those edges, and may be pressed on to those edges. The plate may have holes near its edges, the engaging loops being formed with kinks which clip into the holes. Spring clips may be provided for electrical connections to such loops at the edge of such plate and may also be formed with kinks which clip into the said kinks of the loops. The electrical connection to such spring clip may be a cable rivetted, eyeletted or soldered to a cross-piece interconnecting the legs of the clip or may comprise an angled tongue formed at the end of one of the legs to receive a flat plug-in connector. A temperature regulating device may be located within the helical winding and may be readily connected to the heating element by means of such connectors.

REFERENCES:
patent: 2530806 (1950-11-01), Boxrud
patent: 2536925 (1951-01-01), Forss
patent: 2817068 (1957-12-01), Schwing
patent: 2997569 (1961-08-01), Wayner
patent: 3634654 (1972-01-01), Peetz et al.
patent: 3784963 (1974-01-01), DeCenzo
patent: 4058789 (1977-11-01), Bavisotto et al.

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