Variable electric resistor device

Details Variable electric resistor device Variable electric resistor device

1975-12-22

1977-01-04

Albritton, C. L.

Electrical resistors

Mechanically variable

338 87, 338 92, 338197, 338202, H01C 1300

Patent

active

040017591

ABSTRACT:
A variable electric resistor device comprises a block of electrical insulating material. An elongated member of current resistive metal is removably positioned in the insulating material. A pair of electrically conductive terminal leads are each electrically connected to a corresponding end of the current resistive member. An elongated ancillary member of electrically conductive material is embedded in the insulating material in spaced parallel relation with the current resistive member. A plurality of spaced transverse internally threaded bores are formed through the ancillary member. A plurality of spaced bores are formed through the block extending from both sides of the internally threaded bores from the current resistive member to a surface of the block. A plurality of electrically conductive screws are each threadedly coupled to a corresponding one of the threaded bores and extend in the corresponding bore thereof in a manner whereby selected screws are movable into electrical contact with the current resistive member.

REFERENCES:
patent: 2484117 (1949-10-01), Payne

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