Variable resistor with plug-in resistance element

Details Variable resistor with plug-in resistance element Variable resistor with plug-in resistance element

1975-03-31

1976-06-29

Truhe, J. V.

Electrical resistors

Mechanically variable

Slidable coextensive helical and linear contacts

338150, H01C 1026

Patent

active

039672310

ABSTRACT:
An improved variable resistor wherein the resistance element therein is readily removable for repair or replacement through the front of the resistor without otherwise dismantling it. The resistance element is carried on a control shaft which is rotatably journaled and releasably axially retained in the resistor. The resistance as carried on the shaft extends no further radially outward from the outer surface of the shaft than an amount sufficient to provide a proper electrical contact and yet allow the shaft to be axially removable through a journal at the front of the resistor. The resistance element may then be repaired or replaced without disconnecting leads to the resistor or further dismantling it or any framework in which it may be mounted.

REFERENCES:
patent: 544047 (1895-08-01), Meissner
patent: 586622 (1897-07-01), Porter
patent: 1216756 (1917-02-01), Williams
patent: 1536321 (1925-05-01), Amsler
patent: 2398758 (1946-04-01), Miller
patent: 2860214 (1958-11-01), Bourns
patent: 2898568 (1959-04-01), Bourns et al.

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