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High speed, low mass, movable probe and/or instrument positioner, tool and like items suitable for use in a controlled environment chamber

  • US 4,527,119 A
  • Filed: 05/17/1982
  • Issued: 07/02/1985
  • Est. Priority Date: 05/17/1982
  • Status: Expired due to Fees
First Claim
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1. A high speed, low mass positioning apparatus for positioning a test probe at any desired point within an x-y plane comprising a first axis of movement means for positioning the probe along one axis of movement and a second axis of movement means for positioning the probe along the remaining transverse axis of movement, both of said axis of movement means comprising motor driven pulley wheel and drive cable arrangements arrayed around the outer periphery of the x-y planar area within which it is desired to position the test probe, one of said axis of movement means being arranged to move a set of spaced-apart movable trucks in either direction along two spaced-apart parallel boundaries defining the opposite side of the x-y planar area, a light inflexible track member secured between and carried by said two spaced-apart movable trucks and movable therewith in either direction along said one axis of movement, a small lightweight movable carrier movably supported by said track member and movable therealong in either direction transverse to said one axis of movement, the other of said axis of movement means being arranged to move said small lightweight movable carrier back and forth in either direction along the second axis of movement on said track member, a respective pulley wheel mounted on each of said movable trucks and movable therewith, said truck mounted pulley wheels supporting a movable conductive fine wire endless loop therebetween which extends along the same axial direction as the track member, one side of the movable fine wire loop being secured to and moved by the small lightweight movable carrier, means for electrically insulating said conductive fine wire endless loop from the truck mounted pulley wheels and said movable carrier, and an electrically conductive test probe secured to and movable with the other side of the movable conductive fine wire loop whereby the electrical test probe can be positioned at any desired point within the planar x-y area.

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