Apparatus for measuring coating thickness

Details Apparatus for measuring coating thickness Apparatus for measuring coating thickness

1982-08-09

1984-02-28

Myracle, Jerry W.

Radiant energy

Inspection of solids or liquids by charged particles

Including a radioactive source

73150R, G01N 2300

Patent

active

044343663

ABSTRACT:
A coating thickness measuring apparatus for step and repeat coating systems, including; a support member; a common support assembly mounted for pivotal movement about and along a vertical axis; a measuring probe carried by the common support assembly and movable with respect thereto along a horizontal axis; a calibrating disc carried by the common support assembly for rotation with respect thereto about a horizontal axis, having an opening for reception therethrough of the probe and having a plurality of angularly spaced calibration standards movable into selective alignment with the probe; actuators for moving the probe along its horizontal axis, for vertically moving the common support assembly and for rotating the calibration disc; stroke limiting means to halt probe movement between its extreme positions; an indexing bar having a plurality of variably spaced openings; an indexing pin for securing the support member into one of the indexing bar openings; and sensing switches developing signals indicative of the positions of various moving components of the apparatus.

REFERENCES:
patent: 3499152 (1970-03-01), Hetenhouser
patent: 4190770 (1980-02-01), Saunders et al.

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