Title: Means for inspecting an annular workpiece

Abstract: A method and apparatus for inspecting an annular or ring-like work element to determine if the concentricity and wall thickness of the work element is within prescribed limits. The work is mounted within a rotatable drum so that the outer wall of the work resides in contact against the inner wall of the drum. The drum is rotated about its axis at a speed such that the work is caused to rotate about its own axis of rotation in one point rolling contact with the moving drum surface. An electrical contact point is placed at a prescribed distance from the axis of the drum and is adapted to close a warning circuit in the event the concentricity or wall thickness of the work element is outside of the desired limits.

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Inventors: Lauri, Angelo (Rome, NY, US)

Application Number: 883698
Filing Date: 1978-03-06
Publication_date: 1979-02-06
Assignee:
Primary Class(es): 33/551 33/543
Other Classes:
US Patent Ref:

2689409	Sep, 1954	Fry et al.	33/178.
3028676	Apr, 1962	Lauri	33/178.
4080741	Mar, 1978	Siddall et al.	33/178.

Other Refs: 670201394655

Oct, 1964	IT
Jun, 1965	CH

Primary Examiner: Stearns, Richard R.
Assistant Examiner:
Attorney: Bruns & Jenney