Baths – closets – sinks – and spittoons – Flush closet – With holding tank
Patent
1979-02-12
1980-08-12
Nilson, Robert G.
Baths, closets, sinks, and spittoons
Flush closet
With holding tank
4319, 4406, 4DIG3, 137 51, 137 62, 137350, B61D 3500, E03D 910, E03D 912
Patent
active
042165547
ABSTRACT:
A system to protect piping and containers from damage by freezing of contained aqueous liquid includes a temperature-actuated SPDT switch connected at its movable contact to a rechargable battery. The fixed contacts of the switch are connected to two input terminals of a DC motor of a motor-actuated valve having its valve opened or closed depending upon the operation of the switch. The movable contact normally engages the fixed contact that provides voltage to close the valve, if open, as the sensed temperature is above about 35.degree. F., but moves to the other fixed contact when the temperature drops to 35.degree. F. to open automatically the valve. A relay having a coil energized by AC power has a normally open contact coupling the motor and the fixed contact used to close the valve so that closing is inhibited, if the AC power is off, until power is on.
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Ogontz Thermal Drain Valve; Ogontz Controls Company; Jan. 1978.
Glueckert Albert J.
Honegger Robert J.
Nylund Everett E.
Saigh Philip A.
Gard, Inc.
Nilson Robert G.
White Claron N.
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