Secondary sensing system for contactor control system

Details Secondary sensing system for contactor control system Secondary sensing system for contactor control system

1992-09-28

1993-03-16

Swiatek, Robert P.

Animal husbandry

Milkers

With signals, indicators, registers, and timers

119 21, A01K 3100

Patent

active

051934833

ABSTRACT:
In an animal confinement structure having a contactor control device which controls a temperature control apparatus utilized for applying heating or cooling to the structure responsive to the ambient temperature sensed, a secondary system employed for control of temperature outside a preselected temperature regime, upon the failure of the contactor control device or loss of power. A remote temperature sensor is operatively connected to a pair of electronic thermostatic circuits for independently sensing the ambient temperature for comparison to the preselected range, and connected to a power supply utilized for energizing a relay resulting in the temperature control apparatus by independently actuated responsive to the sensed ambient temperature. The secondary system may be selectively used to control a temperature control apparatus which provides either heating or cooling.

REFERENCES:
patent: 3669350 (1972-06-01), White
patent: 3743009 (1973-07-01), Dagerford
patent: 3915377 (1975-10-01), Sutton, Jr.
patent: 4113175 (1978-09-01), Sutton, Jr.
patent: 4281789 (1981-08-01), Quinlisk
patent: 4602739 (1986-07-01), Sutton, Jr.
patent: 4700887 (1987-10-01), Timmons
patent: 4986469 (1991-01-01), Sutton, Jr.
patent: 5031574 (1991-07-01), McDowell

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