Electric heating elements

Details Electric heating elements Electric heating elements

1976-05-04

1977-08-02

Albritton, C. L.

Electrical resistors

Plural resistance elements connected by a jumper or spacer

219546, 338243, 338261, 338270, 338274, H01C 722

Patent

active

040399966

ABSTRACT:
An electric heating element, particularly of the cartridge type, comprising two elongated dielectric cores disposed within a metallic sheath. Each core has a plurality of longitudinally extending openings therein and more particularly one core has three longitudinal openings whereas the other has two openings. A resistance wire coil is wound on each of the cores, each coil having longitudinally spaced terminals. Three metal pins fit into predetermined core openings; one of the terminals of each resistance coil is electrically connected to one pin, the opposite terminal of one resistance coil is electrically connected to a second pin; and the opposite terminal of the other resistance coil is electrically connected to the third pin; whereby the one pin serves as a common electrical connection for both resistance coils, and the second and third pins serve as separate electrical connections to the respective resistance coils, whereby separate circuits may be established within the heating element.

REFERENCES:
patent: 3217279 (1965-11-01), Boggs
patent: 3307135 (1967-02-01), Simmons

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