Automatic level and plumb tool
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United States of America Patent
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Jun 11, 1996
Issued Date -
N/A
app pub date -
Feb 24, 1995
filing date -
Aug 27, 1993
priority date (Note) -
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Abstract
A self-leveling plumb, level and pointing tool uses a visible laser diode to project light beams in two modes through two windows. Accurate, low cost structures for generating level and plumb beams and planes of light are disclosed. In principal embodiments, all leveling is accomplished using a very flexible coil spring as a pendulum element, a chain link connection in combination with such a spring, or a point contact suspension. Several accessories are disclosed for use with the laser tool, as well as other embodiments.
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