Electrical control apparatus

Details Electrical control apparatus Electrical control apparatus

1975-01-15

1976-06-29

Schaefer, Robert K.

Electrical transmission or interconnection systems

Switching systems

Plural switches

318139, 200209, H01H 1914

Patent

active

039671348

ABSTRACT:
An electrical control unit for interconnection between a source of electrical energy and an electrically driven unit including a slide surface composed in part of electrically nonconductive material, a plurality of conductive discrete contact elements arranged in the slide surface, a conductive liquid contact adapted to progressively engage certain of the conductive discrete contact elements in the slide surface to provide a variable magnitude electrical output, and/or one or more conductive liquid contacts adapted to engage other of the discrete contact elements in the slide surface to effect a switching operation with respect to the variable magnitude electrical output or other electrical signal.

REFERENCES:
patent: 2047902 (1936-07-01), Eitzen
patent: 2856486 (1958-10-01), O'Neill
patent: 3878349 (1975-04-01), Gibbs

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