Method of making infrared emitter

Details Method of making infrared emitter Method of making infrared emitter

1976-06-07

1977-04-19

DiPalma, Victor A.

Metal working

Method of mechanical manufacture

Electrical device making

219345, 338262, 427 58, 427294, 427372R, H05B 318

Patent

active

040179672

ABSTRACT:
An infrared emitter panel comprising a body of refractory material, a non-helical continuous heating element of serpentine form embedded within said refractory material and having opposed ends projecting through said refractory material for connection in circuit to a source of electrical power. Said body of refractory material is provided with expansion zones adjacent each of the hair pin-like bent ends of said heating element for allowing unimpeded linear expansion and contraction of said heating element upon energization and de-energization respectively. The invention also comprehends a method for forming an infrared emitter panel comprising embedding a non-helical heating element of serpentine form within a non-dried slurry of refractory material and then causing a current to pass through said heating element for causing the development of expansion zones within the refractory material for expansion and contraction of the same as well as for curing and drying the refractory material to render same integrated into compact operational form.

REFERENCES:
patent: 1431825 (1922-10-01), Lemoine
patent: 1681956 (1928-08-01), Shriner
patent: 3479490 (1969-11-01), Stark
patent: 3496336 (1970-02-01), Hingorany et al.
patent: 3500444 (1970-03-01), Hesse et al.
patent: 3664013 (1972-05-01), MacGuire
patent: 3809859 (1974-05-01), Wells
patent: 3952408 (1976-04-01), Docx

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