The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 15, 1984
Filed:
Nov. 29, 1982
Hansruedi Stutz, Dietlikon, CH;
Karl Lapp, Zurich, CH;
Loepfe Brothers Limited, Wetzikon, CH;
Abstract
During the measurement of the length of filamentary materials, for instance a yarn, which is wound into a cross-wound package which is driven by a grooved drum, appreciable errors arise because there is not taken into account slippage. Therefore, with the present method during the winding operation the slip, which is governed by the relationship of the circumferential velocities of the grooved drum and the cross-wound package, is continuously measured in successive time intervals, and there is undertaken a correction of the yarn length determined without taking into account the slip. Thus, sensors continuously measure the rotational speeds of the cross-wound package and the grooved drum, and an angle measuring device determines the diameter of the cross-wound package, these measuring results then being inputted to an evaluation circuit. In the evaluation circuit there is computed the slip and such is incorporated into the length measurement.