MOTION GUIDE APPARATUS
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United States of America Patent
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Issued Date -
Apr 23, 2009
app pub date -
Jul 25, 2006
filing date -
Aug 25, 2005
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A linear guide device (40) as a movement guiding device, comprising a track rail (41) as a track member and a moving block (43) as a moving means slidably installed on the track rail (4) through balls (42 . . . ) installed on the track rail as a large number of rolling elements. The track rail (41), the moving block (43), the balls (42), and the other members forming the linear guide device (40) are formed of a radiolucent material. The radiolucent material desirably adopts a material of 0.18 cm.sup.-1 or less in X-ray absorption coefficient. Furthermore, ceramic coating is desirably applied to those areas of the track rail (41) and the moving block (43) receiving a load from the balls (42) which include rolling surfaces for the rolling elements. As a result, the radiolucent type movement guiding device suitably usable without being limited by installation place even under a special environment can be provided by adopting such a structure as stated above.
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