Animal husbandry – Milkers – With signals – indicators – registers – and timers
Patent
1989-06-23
1991-04-02
Hirsch, Paul J.
Animal husbandry
Milkers
With signals, indicators, registers, and timers
119 15, A01K 100
Patent
active
050039237
ABSTRACT:
A heated pet house has a hollow interior portion provided with a thermostatically controlled heater. A door in a side wall of the pet house is covered with a hinged flap to allow pet entry and exit. The pet house has a hinged roof to allow convenient human access. In a first embodiment, the thermostatically controlled heater includes an electrical resistance heating element connected for actuation by a thermostatic switch to a conventional AC power source. In a second embodiment, a step down transformer and rectifier are connected to an AC power source to supply a reduced DC voltage to a thermostat. A first relay coil is energized by activation of the thermostat with DC current to close relay contacts which connect a second relay coil to the AC power source. The second relay coil closes second and third pairs of relay contacts which connect an electrical resistance heating element to the AC power source. A pressure sensitive switch may be provided in the pet house for allowing operation of the heating element only when a pet is present within the interior.
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Hirsch Paul J.
Kearns Jerry T.
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