Encoder disc rotating device for a surveying instrument
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United States of America Patent
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Jan 27, 1998
Grant Date -
N/A
app pub date -
Jan 31, 1996
filing date -
Feb 3, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The encoder disc rotating device for a surveying instrument comprising a vessel-shaped cover member 30 rotating coaxially with a rotating axis 22 of an encoder disc rotating knob 21 and having an opening formed at the arcuate lateral side for protruding to expose the encoder disc rotating knob 21, in which the encoder disc rotating knob 21 is protruded to expose or concealed by the rotation of the cover member 30. The cover member can ensure a large space for arranging the operation system without changing the machine height and cover the encoder disc rotating knob for preventing erroneous operation without hindering the operation.
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