Detector for the contactless measurement of characteristics of a

Details Detector for the contactless measurement of characteristics of a Detector for the contactless measurement of characteristics of a

1994-02-03

1995-08-15

McGraw, Vincent P.

Optics: measuring and testing

By monitoring of webs or thread

25055919, 356430, G01N 2189

Patent

active

054424470

ABSTRACT:
The present invention relates to a detector for measuring the characteristics of a linear product of very great length relative to its other dimensions, on a production machine or the like. The detector operates without contact with the linear product and is provided with at least one means (1) having zones (2 and 3) for measurement relative to a mean position of the moving filament (4) and measuring the variation of the complex morpho-dimensional and/or positional characteristics of the filament (4), this latter varying, either by vibrating movement, or by displacement induced by the mean position of the axis of movement. The invention is applicable to the field of the measurement of the characteristics of linear products of very great length.

REFERENCES:
patent: 4490618 (1984-12-01), Cielo
patent: 5291024 (1994-03-01), Barea
R. Leuenberger, "Fadenspannungen beruhrungslos ermitteln", Melliand Textilberichte, vol. 73, No. 8, Aug. 1992, pp. 611-613.

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