Apparatus for monitoring the quality of the surface state of a p

Details Apparatus for monitoring the quality of the surface state of a p Apparatus for monitoring the quality of the surface state of a p

1991-06-24

1993-05-11

Williams, Hezron E.

Measuring and testing

With fluid pressure

Dimension, shape, or size

73105, G01B 1322

Patent

active

052091031

ABSTRACT:
The apparatus comprises an air flow duct having an end portion fitted inside a nozzle whose front surface is trued so that it can be applied against the surface to be scanned and so that it can co-operate therewith to form a leak through which air flows as a function of the surface state of the part, and further comprises measuring means for measuring the flow rate of air passing through the leak. At its trued front surface, the nozzle delimits an annular air flow duct, and the portion of the nozzle inside the annular air flow duct includes a duct connected to the atmosphere.

REFERENCES:
patent: 2618965 (1952-11-01), Gray
patent: 2901906 (1959-09-01), Emmons, III
patent: 3379050 (1968-04-01), Parker
patent: 3517545 (1970-06-01), Ogren
patent: 3747395 (1973-07-01), Sherman
patent: 4179919 (1979-12-01), McKechnie

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