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Adjustable counterbalance mechanism for a coordinate measurement machine

  • US 6,253,458 B1
  • Filed: 11/22/1999
  • Issued: 07/03/2001
  • Est. Priority Date: 12/08/1998
  • Status: Expired due to Fees
First Claim
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1. A counterbalance device for use with a rotatably maneuverable member, the device comprising:

  • a ratchet assembly rotatably disposed outside the member;

    a transmission gear rotatably disposed at the center of rotation of said member in meshing engagement with said ratchet assembly;

    a cable spool having a spool gear rotatably disposed in the member in meshing engagement with said transmission gear;

    a cable attached to said cable spool;

    a spring element disposed within the member having a supported first spring end a second spring end attached to said cable.

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