Variable resistance control

Details Variable resistance control Variable resistance control

1974-09-23

1976-09-21

Bartis, A.

Electrical resistors

Mechanically variable

Movable contact electrically adjustable over length of...

338162, 338184, 338202, 338DIG1, H01c 1034, H01C 112

Patent

active

039822206

ABSTRACT:
A variable resistance control containing a one-piece stamped mounting bracket having an integral collector ring for positioning a rotatable gear and having a pair of integral yokes for aligning a lead screw in driving relationship with the rotatable gear. A contactor constrained to rotate with the gear wipingly engages a resistance element. Each of the yokes comprises a pair of arms arcuately clinched around the lead screw to secure the lead screw to the mounting bracket. Integral with the gear are two outwardly extending resilient fingers for engagement with a respective one of the yokes to arrest rotation of the gear. Continued rotation of the lead screw after rotation of the gear has been arrested flexes the resilient finger toward the lead screw for driving the gear out of engagement with the lead screw. An aperture is provided in the lead screw for insertion of a shaft or tool for remote actuation of the control or for actuation of another control.

REFERENCES:
patent: 2958839 (1960-11-01), Barden
patent: 3242452 (1966-03-01), Grunwald et al.
patent: 3375478 (1968-03-01), Van Benthuysen et al.
patent: 3378804 (1968-04-01), Cartwright
patent: 3416119 (1968-12-01), Van Benthuysen et al.
patent: 3670286 (1972-06-01), Bang et al.
patent: 3743999 (1973-07-01), Miyashita

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