Method and apparatus for the linear transport of materials in ro

Details Method and apparatus for the linear transport of materials in ro Method and apparatus for the linear transport of materials in ro

1990-09-05

1992-08-18

Turner, Samuel A.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

356356, 226162, G01B 902

Patent

active

051393379

ABSTRACT:
In a method and apparatus for linear transport of sheet and web material by piezotranslators, the longitudinal displacement is measured by an optical interferometer and the interferometer output is utilized to control the longitudinally acting piezotranslators.

REFERENCES:
patent: 3454206 (1969-07-01), Williams
patent: 3779647 (1973-12-01), Dawson
patent: 4378160 (1983-03-01), Vlad et al.

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