Portable coordinate measurement machine with improved counter balance
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United States of America Patent
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Jun 14, 2005
Grant Date -
Sep 18, 2003
app pub date -
Feb 13, 2003
filing date -
Feb 14, 2002
priority date (Note) -
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Abstract
A portable coordinate measurement machine comprises an articulated arm having jointed arm segments. The articulated arm includes an integrated, internal counter-balance in one of its hinge joints. This counter-balance utilizes a coil spring having relatively wide end rings and narrower internal rings machined from a metal cylinder. The spring further includes at least two posts for locking into the hinge structure of the arm as well as a spring adjustment mechanism.
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