Controller for electric motor

Details Controller for electric motor Controller for electric motor

1979-07-26

1981-09-15

Albritton, C. L.

Electrical resistors

Mechanically variable

Surfaces pressed together

338108, 338153, H01C 1012

Patent

active

042900425

ABSTRACT:
A controller for electric motors comprises a casing, a carbon pile resistor contained in a through hole of an insulating frame carried by the casing, a U-shaped spring conductor plate with an end secured to the insulating frame, a rotational plate pivotally supported on the casing, a first terminal connected to an end of the carbon pile resistor, and a second terminal connected to the conductor plate. The other end of the conductor plate is operatively connected to the rotational plate. Thus the other end of the conductor plate is biased and presses the other end of the carbon pile resistor in response to the rotation of the rotational plate.

REFERENCES:
patent: 2371772 (1945-03-01), Naul
patent: 2536012 (1950-12-01), Turner
patent: 2850605 (1958-09-01), Matthias
patent: 3353424 (1967-11-01), Peterson et al.
patent: 3427545 (1969-02-01), Tanzman
patent: 3703693 (1972-11-01), Nomura et al.

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