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Spatial measuring device

DC
  • US 5,829,148 A
  • Filed: 04/23/1996
  • Issued: 11/03/1998
  • Est. Priority Date: 04/23/1996
  • Status: Expired due to Term
First Claim
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1. An articulated spatial coordinate measuring arm which comprises:

  • a supporting base;

    a proximal transfer member having a proximal end and a distal end;

    an intermediate transfer member having a proximal end and a distal end;

    a distal transfer member having a proximal end and a distal end;

    a probe having a proximal end and a distal end;

    a first joint assembly swivelingly connecting said proximal end of said proximal member to said base;

    a second joint assembly swivelingly and hingedly connecting the distal end of said proximal member to the proximal end of said intermediate member;

    a third joint assembly swivelingly and hingedly connecting the distal end of said intermediate member to the proximal end of said distal member; and

    a fourth joint assembly hingedly connecting the proximal end of said probe to the distal end of said distal member;

    wherein at least one of said first, second and third joint assemblies has at least one degree of freedom capable of sweeping through an unlimited arc;

    wherein said at least one of said first, second and third joint assemblies comprises at least one multi-contact slip-ring sub-assembly for transmitting electrical signals therethrough; and

    wherein each of said first, second and third joint assemblies has an unlimited range of swiveling motion.

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