Patents Assigned to Gebhard Balluff
  • Proximity switch with continuously operable test circuit responsive to bipolar double pulses
    Patent number: 4652819
    Abstract: The invention relates to a self-testing proximity switch, wherein the testing is carried out with the aid of bipolar double pulses which, independently of the switching state of the trigger stage, each time cause a short-timed triggering thereof. At the output of the trigger stage, the superimposed pulses can be evaluated by the test circuit in order to monitor proper functioning of the proximity switch.
    Type: Grant
    Filed: March 27, 1985
    Date of Patent: March 24, 1987
    Assignee: Gebhard Balluff
    Inventor: Heinz Kammerer