Electricity: motive power systems – Three-or-more-positions motor controller systems – Knee- or foot-operated controllers
Patent
1992-03-19
1994-08-09
Ro, Bentsu
Electricity: motive power systems
Three-or-more-positions motor controller systems
Knee- or foot-operated controllers
112277, D05B 6906
Patent
active
053369815
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.
REFERENCES:
patent: 3562616 (1971-02-01), Elliott
patent: 3639877 (1972-02-01), Fresard et al.
patent: 3818292 (1974-06-01), Berman
patent: 4137860 (1979-02-01), Yoneji et al.
patent: 4399393 (1983-08-01), Santini
patent: 4499449 (1985-02-01), Shinozaki et al.
patent: 4578624 (1986-03-01), Neki et al.
Comelz S.p.A.
Ro Bentsu
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