Position control system for a construction implement such as a r

Details Position control system for a construction implement such as a r Position control system for a construction implement such as a r

1991-02-15

1994-07-05

Trans, Vincent N.

Boots, shoes, and leggings

172 45, E01C 1900, A01B 6310

Patent

active

053273451

ABSTRACT:
An ultrasonic sensor for a construction implement is disclosed which provides an indication of the position of the sensor relative to a reference surface in two dimensions. In a preferred embodiment of the invention, a pair of sensors are positioned a predetermined distance from one another to transmit and receive ultrasonic waves to measure the time it takes the waves to travel to the reference surface and be reflected back to the ultrasonic transducers. Additionally, a transducer is disclosed which detects a side lobe of a acoustic wave transmitted by an acoustic transducer whereby the velocity of said acoustic pulse may be calculated.

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