Electrical resistors – Mechanically variable – Movable contact electrically adjustable over length of...
Patent
1973-03-16
1976-02-17
Claffy, Kathleen H.
Electrical resistors
Mechanically variable
Movable contact electrically adjustable over length of...
179 1VL, H01C 900
Patent
active
039394514
ABSTRACT:
A balance control comprises a box-type frame, a plurality of variable resistors individually mounted on each side wall of the frame, the upper plate of the frame having a large hole, a pair of auxiliary plates attached to the surface opposite the upper plate, each auxiliary plates having a receiving hole, the large hole and the two receiving holes forming a space receiving a ball provided with an operating rod. Either of the auxiliary plates is biased by a resilient member to exert a frictional resistance on the ball. Each pair of shafts of the resistors is ganged by a strip having a slot and the end portion of the operating rod is inserted into a hole defined by the slots of the overlapped strips.
REFERENCES:
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patent: 3208299 (1965-09-01), Leonard
patent: 3629775 (1971-12-01), Kindred
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patent: 3760320 (1973-09-01), Oka et al.
patent: 3813178 (1974-05-01), Herbenar et al.
Alps Electric Co. ,Ltd.
Claffy Kathleen H.
D'Amico Thomas
Gerber Eliot S.
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