Determining the dimensions of workpieces

Details Determining the dimensions of workpieces Determining the dimensions of workpieces

1979-05-21

1981-06-02

Atkinson, Charles E.

Boots, shoes, and leggings

364560, 250560, 356381, 356386, 356390, G01B 1104

Patent

active

042714770

ABSTRACT:
A method for measuring the width and/or the thickness of a workpiece comprising imaging a plane of the workpiece at two positions displaced vertically above a datum producing signals indicative of the angle subtended by the workpiece at the image positions and representative of the image widths apparent at these positions, combining the signals to provide product and difference components and calculating from the components the true workpiece width when at the datum and/or the workpiece thickness.

REFERENCES:
patent: 3565531 (1971-02-01), Kane et al.
patent: 3671726 (1972-06-01), Kerr
patent: 3732016 (1973-05-01), Deshayes et al.
patent: 3802774 (1974-04-01), Eschler et al.
patent: 3997270 (1976-12-01), Suzuki
patent: 4033697 (1977-07-01), Pfoutz et al.
patent: 4063820 (1977-12-01), Borgese
patent: 4152767 (1979-05-01), Laliotis
patent: 4160599 (1979-07-01), Sperrazza
patent: 4173788 (1979-11-01), Laliotis

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