Method and an apparatus for inspecting the edge of a lid

Details Method and an apparatus for inspecting the edge of a lid Method and an apparatus for inspecting the edge of a lid

1989-11-20

1991-04-02

Evans, F. L.

Optics: measuring and testing

By configuration comparison

With comparison to master, desired shape, or reference voltage

356237, 358101, 358106, G01N 2188

Patent

active

050043471

ABSTRACT:
The invention has for its purpose to provide a method and an apparatus for inspecting the bent edge of a disc-shaped object, e.g. the annular edge of a metal lid bounding a gutter for sealing compound. In order to realize such an inspection with great reliability according to the invention the resolution is made as great as possible by means of the following steps:

REFERENCES:
patent: 4037724 (1977-07-01), Schultze et al.
patent: 4521807 (1985-06-01), Werson

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