Automatic temperature and humidity regulation – Ventilator type
Patent
1985-01-02
1986-08-12
Tapolcai, William E.
Automatic temperature and humidity regulation
Ventilator type
236 68C, 236 90, F24F 1310, G05D 2330
Patent
active
046051627
ABSTRACT:
A ventilator opener for a livestock house having an electrically powered fan for ventilation utilizes a tubular electrical heater, connected to the same power source as the fan, to heat an expandable bi-metallic latch finger which thereby engages the inner surface of the tubular heater. The latch finger is operatively connected to a conventional winch which is used to lower at least one closure or curtain thereby uncovering one or more screened ventilation openings along the walls of the house. The latch finger secures the winch with the curtains in their closed positions while the finger is engaged by the heater. The latch finger is released from engagement with the tubular heater by cooling of the heater and latch finger subsequent to either electrical power failure or an excessive temperature within the livestock house, thereby releasing the winch and opening the ventilation openings.
REFERENCES:
patent: 1566918 (1925-12-01), Parks et al.
patent: 2064935 (1936-12-01), McFall et al.
patent: 2286156 (1942-06-01), Petersen
patent: 2329636 (1943-09-01), McGrath
patent: 2373697 (1945-04-01), Littlefield
patent: 3329341 (1967-07-01), Jones
patent: 3915377 (1975-10-01), Sutton, Jr.
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