Geometrical instruments – Straight-line light ray type – Rod or target
Patent
1989-10-16
1991-07-16
Cuchlinksi, Jr., William A.
Geometrical instruments
Straight-line light ray type
Rod or target
33299, G01C 1502, G01C 1506
Patent
active
050313282
ABSTRACT:
An improved target for use in an optical measurement system comprising an upper cylindrical housing portion and a lower cylindrical housing portion separably coupled at an intermediate location, the lower housing portion having a lower cylindrical region of a reduced diameter depending therefrom for receipt in a hole of the tooling to be sighted and an upper region having threads and an upwardly facing cylindrical recess, the upper cylindrical portion having threads at a lower region for separably coupling with threads of the lower portion and with the upper region having a downwardly facing cylindrical recess; illumination mechanisms positioned within the recesses and comprising a battery, a light emitting diode and potting material therebetween in a cylindrical configuration with electrical contacts extending from its lower face in contact with the battery and from one side surface in contact with the housing for establishing electrical contact between the battery and the light emitting diode; and a viewer operatively coupling the light emitting diode and the geometric center of an upper surface of the housing for illuminating the geometric center of the upper surface of the housing for sighting. Also disclosed is the system in which such target is used as well as its method of use.
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Anderson Terry J.
Block Robert B.
Cuchlinksi, Jr. William A.
Northrop Corporation
Wirthlin Alvin
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