Geometrical instruments – Straight-line light ray type – Alignment device
Reexamination Certificate
2007-02-13
2007-02-13
Gutierrez, Diego (Department: 2859)
Geometrical instruments
Straight-line light ray type
Alignment device
C033SDIG021, C033SDIG010
Reexamination Certificate
active
11225702
ABSTRACT:
A spherically rotatable support for a light image projector has level and/or plumb indicators for leveling or plumbing a central reference frame of its spherical rotation. A projected light image, such as a laser line segment of relatively short length may be successively stepped across a long wall while maintaining its level or plumb condition. A low powered laser or other light source may be used to generate the short-length, line segment in place of a more high powered light source that would otherwise be needed to illuminate the full length of the wall or other such surface.
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Fox Jeffrey A.
Krantz Norman L.
Cohen Amy R.
Gimlan Gideon
Gutierrez Diego
MacPherson Kwok & Chen & Heid LLP
Zircon Corporation
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