Liquid contact switch having plural compartments and electrical

Details Liquid contact switch having plural compartments and electrical Liquid contact switch having plural compartments and electrical

1976-05-10

1978-02-28

Scott, James R.

Electricity: circuit makers and breakers

Retarded

Chain or flexible drive

200185, 200186, H01H 2900

Patent

active

040769720

ABSTRACT:
An electrical switch of the liquid contact type having a housing divided into three compartments: (1) a power compartment having electrodes, (2) a control compartment containing a resistor and (3) an intermediate compartment communicating with the power compartment through a lower channel and communicating with the control compartment through an upper channel containing a wick. The wick prevents liquid flow but permits gaseous flow.
A body of electrically conductive liquid is normally contained in the intermediate compartment so that when the resistor is heated, the gas in the control compartment is expanded and passes into the intermediate compartment thereby forcing the conductive liquid into the power compartment to establish a circuit between the two electrodes.

REFERENCES:
patent: 1094440 (1914-04-01), Hatfield
patent: 1954364 (1934-04-01), Nacey et al.
patent: 2484110 (1949-10-01), Mestitz
patent: 2577653 (1951-12-01), Dysart
patent: 2583434 (1952-01-01), Meyer

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