Moisture sensing systems for electrically operated liquid-handli

Details Moisture sensing systems for electrically operated liquid-handli Moisture sensing systems for electrically operated liquid-handli

1974-05-23

1976-03-16

Aegerter, Richard E.

Fluent material handling, with receiver or receiver coacting mea

Automatic control of flow cutoff or diversion

137312, 141130, 200 6104, B65B 5716

Patent

active

039439836

ABSTRACT:
A fraction collector or other electrically operated liquid-handling device has a tray underlying the device for collecting spilled liquid. A pitched surface in the tray gathers any spilled liquid into the vicinity of a sensor having a moisture-destructible or sensitive element which holds a switch against the force of a spring in a closed-circuit position, allowing power to be fed from a current source to the electrically operated device. Upon wetting and destruction of the element the spring is relieved to open the switch, thereby cutting off the power and stopping the operation of the liquid-handling device.

REFERENCES:
patent: 1174827 (1916-03-01), Conway
patent: 2482448 (1949-09-01), Wiest
patent: 2531159 (1950-11-01), Rowell
patent: 3205921 (1965-09-01), Packard et al.

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