Electric resistance heater and limit switch assembly

Details Electric resistance heater and limit switch assembly Electric resistance heater and limit switch assembly

1986-09-08

1987-12-01

Bartis, Anthony

Electric heating

Heating devices

Combined with container, enclosure, or support for material...

219364, 219374, 219375, 219532, 337348, H05B 102, F24H 300, H01H 3700

Patent

active

047106107

ABSTRACT:
A heater and limit switch assembly, particularly useful for installation in the conditioned air duct of a rooftop air conditioner. The loop of a rigid-loop heater, mounted on a vertical plate by two parallel legs, is modified to provide an inward offset portion leading to the second leg. Radiation, from the offset portion and its bend into the second leg, is received at close range by a simple disk-type limit switch, positioned on the plate outward of the second leg and facing the offset, inducing prompt response to any increase over design temperature.

REFERENCES:
patent: 2080799 (1937-05-01), Wiegand
patent: 2488636 (1949-11-01), Mendenhall et al.
patent: 3102185 (1963-08-01), Boyd et al.
patent: 3440400 (1969-04-01), Cotts
patent: 3631525 (1971-12-01), Brasch
patent: 3731056 (1973-05-01), Becker
patent: 3750076 (1973-07-01), Hines
patent: 3770939 (1973-11-01), Kokjohn
patent: 3882438 (1975-05-01), Bourner
patent: 3912903 (1975-10-01), Northrup et al.
patent: 4131789 (1978-12-01), Tyler

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