Temperature operated control system, control device therefor, an

Details Temperature operated control system, control device therefor, an Temperature operated control system, control device therefor, an

1992-03-09

1992-12-01

Reynolds, Bruce A.

Electric resistance heating devices

Heating devices

Tank or container type liquid heater

335208, F24H 120, H01H 3758

Patent

active

051685450

ABSTRACT:
A temperature operated control system, a temperature operated control device therefor and methods of making the same are provided, the temperature operated control device comprising a support, an electrical reed switch unit carried by the support, the reed switch unit comprising a reed switch and a temperature controlled fixed magnetic unit for causing the reed switch to be in a first operating condition thereof when the temperature sensed by the magnetic unit is at or below a first temperature setting and for causing the reed switch to be in a second operating condition thereof when the temperature sensed by the magnetic unit is at or above a second temperature setting, and a selector unit movably carried by the support and being operatively associated with the reed switch unit to adjust the temperature settings thereof within a certain range of temperature settings as the selector unit is moved relative to the reed switch unit.

REFERENCES:
patent: 2498683 (1950-02-01), Hubbell
patent: 3559124 (1971-01-01), Posey
patent: 3760312 (1973-09-01), Shlesinger, Jr.
patent: 3889215 (1975-06-01), Yoshino et al.
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patent: 3903492 (1975-09-01), Endo et al.
patent: 3974469 (1976-08-01), Nicholls
patent: 4004259 (1977-01-01), Krause
patent: 4325042 (1982-04-01), Endo et al.
patent: 4419644 (1983-12-01), Baermann
patent: 4610142 (1986-09-01), Davis
patent: 4944083 (1990-07-01), McIntosh

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