Horizontal displacement mechanism for cleanroom material transfer systems
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United States of America Patent
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Mar 1, 2016
Grant Date -
Nov 29, 2012
app pub date -
Apr 26, 2012
filing date -
Apr 29, 2011
priority date (Note) -
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Abstract
A spiral cam has a tubular shaped portion defined by an interior cavity and an exterior surface that includes a cam contour. A linear slide assembly having a length defined along a rotational axis is defined to slide lengthwise into the interior cavity of the spiral cam. The linear slide assembly allows for movement of the spiral cam along the rotational axis and prevents rotation of the spiral cam relative to the linear slide assembly. A cam roller is fixed at a position proximate to the exterior surface of the spiral cam. The cam roller is disposed separate from the linear slide assembly and within the cam contour of the spiral cam. The cam roller engages the cam contour to move of the spiral cam along the rotational axis when the linear slide assembly and spiral cam are rotated in unison about the rotational axis relative to the cam roller.
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