Leakage inspection method with object type compensation

Details Leakage inspection method with object type compensation Leakage inspection method with object type compensation

1984-10-29

1987-08-11

Krass, Errol A.

Boots, shoes, and leggings

73 492, 364479, 364507, 364571, G01M 332, G06F 1546

Patent

active

046866388

ABSTRACT:
A predetermined number of preceding data items, which are obtained through measurement of change in pressure or pressure difference with respect to respective objects inspected and decided to be acceptable, are grouped according to types of the objects and stored in different storage regions. Each time new data is stored, the oldest data in the corresponding storage region is erased. An average of data stored in a designated storage region is computed and each object is decided if it is acceptable or not on the basis of the difference between the newly measured data of the object and the computed average of the data in the designated storage region corresponding to the object.

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patent: 4490800 (1984-12-01), Powers
patent: 4571986 (1986-02-01), Fujii et al.

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