Drive device for aligning a theodolite
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United States of America Patent
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-
Nov 23, 1999
Grant Date -
N/A
app pub date -
Apr 18, 1997
filing date -
Apr 19, 1996
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A drive device for aligning a theodolite with a target, in which the theodolite is mounted rotatably in the horizontal direction on a theodolite foot. Provision is made of a control knob and an encoder connected thereto, the encoder emitting control signals in accordance with the rotary movement at the control knob to a downstream control circuit. The circuit drives a positioning motor. The rotary table is arranged at the theodolite foot and carries the control knob. Provided between the theodolite and the rotary table is an electric contact which ensures the electrical connection between the encoder and the positioning motor.
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