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Control sensor for a construction machine

  • US 4,961,173 A
  • Filed: 05/10/1989
  • Issued: 10/02/1990
  • Est. Priority Date: 05/11/1988
  • Status: Expired due to Term
First Claim
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1. Control sensor for a construction machine for generating height control signals by detecting the relative position of the sensor to a guide cable, wherein:

  • the control sensor comprises at least two supersonic sensors, at least one of which serves as a transmitter/receiver element;

    the supersonic sensors are connected to an evaluation means which serves to generate the height control signals and a signal of direction which indicates the exceeding of a certain range of width; and

    the supersonic sensors are positioned at a right angle to the direction of movement of the construction machine, and are arranged at a distance from the guide cable that detection angles of supersonic sensor cones generated by said supersonic sensors overlap at said distance.

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