Patents Assigned to Les Controles Vidomatic Inc.
  • Patent number: 4529347
    Abstract: A method and a device for controlling a silo unloader of the type comprising a first electrical motor for driving a gathering apparatus located on the top of the bulk material and a second electrical motor operating a winch to which is suspended the gathering apparatus for lifting, holding in position at the same level or lowering this gathering apparatus into the silo. The method comprises the steps of measuring the current supplied to the first motor and controlling the second motor for lifting, holding in position at the same level or lowering the gathering apparatus in accordance with the measured value of the current. The control device comprises a current detector and an accurate rectifying amplifier for generating a measure signal in relation with the current supplied to the first motor.
    Type: Grant
    Filed: April 12, 1983
    Date of Patent: July 16, 1985
    Assignee: Les Controles Vidomatic Inc.
    Inventors: Jean-Guy Fontaine, Rejean Sarrazin, Jean-Denis Poirier