Control unit for an electric drive motor of industrial processin

Electricity: motive power systems – Three-or-more-positions motor controller systems – Knee- or foot-operated controllers

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318254000, 112277000, D05B 6906

Patent

active

055325645

ABSTRACT:
A control unit for an electric drive motor of industrial processing machinery includes a control arrangement which drives a pair of magnets generating a magnetic flux and a Hall effect sensor disposed between the magnets so as to be swept by the magnetic flux rotatively with respect to each other; the Hall effect sensor outputs an electric signal which varies consistently with the position setting of the control arrangement and drives the electric motor accordingly; the movement of the control arrangement is resisted by springs having different degrees of stiffness from one another; proper interaction can thus be established between the operator and the machine.

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patent: 4535275 (1985-08-01), Muller
patent: 4578624 (1986-03-01), Neki et al.
patent: 4633149 (1986-12-01), Welterlin

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