US 7,461,463 B1
Eccentricity gauge for wire and cable and method for measuring concentricity
Rod Livingston, Richmond, Ind. (US)
Assigned to Beta Lasermike, Inc., Dayton, Ohio (US)
Filed on May 16, 2007, as Appl. No. 11/749,367.
Int. Cl. G01B 7/12 (2006.01); G01B 11/08 (2006.01); G01N 21/00 (2006.01)
U.S. Cl. 33—550  [33/501.02; 356/635; 324/230] 12 Claims
OG exemplary drawing
 
1. An apparatus for measuring eccentricity and diameter of an elongated object moving generally along a z axis, which comprises:
at least three separate measuring devices axially spaced along the z-axis in a manner such that each device can obtain for storage a measurement of the object in a distinct measuring plane at a predetermined point of the z-axis, wherein each plane is oriented at a predetermined degree of angle with respect to the z-axis and each said device is equipped to obtain for storage a measurement of the object at a given predetermined time and actual x-y coordinates; and
a computer based device operably connected to said measuring devices having software means for receiving and storing said three sets of actual measured coordinates, employing two sets of said actual coordinates to derive a projected third set of coordinates and calculating eccentricity by accounting for a difference in the projected third set of coordinates between the actual third set of coordinates.