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:
Oct. 04, 1977
Filed:
Feb. 22, 1977
Peter Feller, Benglen, CH;
Zellweger, Ltd., Uster, CH;
Abstract
A method of, and apparatus for, measuring irregularities in the cross-section of yarns, rovings, bands and the like, by means of a preferably portable measuring apparatus or device providing a direct read-out or display and containing a measuring element, amplifying- and signal converting circuitry as well as an indicator or display device. A measuring signal derived from a yarn irregularity signal is checked with respect to the number of times it passes through at least one given reference value or hysteresis range, and the indicated value for the irregularity constitutes a statistically certain or significant value whenever the number of passes through the reference value or hysteresis range has reached at least a predetermined value.