Animal husbandry – Bed or rest
Patent
1992-07-29
1994-07-05
Swiatek, Robert P.
Animal husbandry
Bed or rest
454239, A01K 3118
Patent
active
053258134
ABSTRACT:
A curtain control system for controlling curtains of an animal enclosure having an electrically-operated forced air ventilation system and a plurality of adjustable drop curtains. Each of the drop curtains has an associated curtain control device for providing supplemental ventilation during power failure or excess temperatures in the enclosure. Each of the curtain control devices includes a winch for winding and unwinding a curtain control cord extending between the curtain and the winch. A winch release is moveable between a hold position for normally holding the winch handle stationary to prevent unwinding of the curtain control cord and a release position to release the winch handle and thereby release the curtains to a dropped, open position. Electromagnets hold the winch releases in the hold position during application of current and permit movement of the winch release to the release position upon interruption of electric current to the electromagnets. A circuit electrically cooperates with the electromagnets for interrupting the flow of electricity to all of the curtain control devices when any single winch release moves to the release position to thereby cause the release of all of the curtains upon the release of any of the curtains.
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Adams, III W. Thad
Swiatek Robert P.
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