Geodetic apparatus
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United States of America Patent
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Jun 5, 2012
Grant Date -
Jul 29, 2010
app pub date -
Jan 22, 2010
filing date -
Jul 25, 2007
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A geodetic apparatus, in particular tacheometer or theodolite, comprises an optical device for sighting objects, a first support on which the optical device is supported such that the optical device may turn around a first axis, and a first gear unit for transmitting a drive torque on the optical device so as to turn the optical device around the first axis. In thegeodetic apparatus, the first gear unit comprises a worm and a worm gear meshing with each other, wherein the worm has a plate-like body and a spirally extending worm thread is formed on a first side face of the body, and the worm gear has a plurality of teeth evenly distributed along a circle.
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