Laser positioner and marking method using the same
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United States of America Patent
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Aug 17, 1993
Grant Date -
N/A
app pub date -
Jul 5, 1991
filing date -
Jul 5, 1990
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A laser positioner is located at a survey base point for projecting a geodetic design pattern depicting design working points onto a working face remote from the base point by use of a laser pattern projector, upon surveying an object route by use of a laser surveying unit. In tunneling operations for example, the design pattern is formed on the working face, so that boring of the holes for charging explosives in the working face can be performed without paint-marking on the working face.
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