Scott J Pleva

US Patent:

50106589, Apr 30, 1991

Filed:

Nov 22, 1988

Appl. No.:

7/274985

Inventors:

Jerry T. Griffith - Arlington TX
Scott J. Pleva - Irving TX

Assignee:

LTV Aerospace and Defense Company - Dallas TX

International Classification:

G01B 520
G01B 728

US Classification:

33784

Abstract:

The present invention provides a hole profile gage comprising a probe that senses deviations in the contour of the inner surface of a bore while it is retracted through the bore. The profile gage includes a processing unit that samples the output from the probe, develops a profile for the hole, and evaluates whether the profile is within predetermined tolerance limits. In a preferred embodiment, the probe comprises a split ball probe coupled with a transducer. In use, the probe is retracted through the bore by a spring coupled with a damping device.