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:
Aug. 14, 1990
Filed:
Feb. 07, 1989
Applicant:
Inventors:
Ernst Felix, Uster, CH;
Hans Wampfler, Zurich, CH;
Assignee:
Zellweger Uster Ltd., Uster, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01B / ;
U.S. Cl.
CPC ...
356429 ; 250571 ;
Abstract
The yarn (3) is illuminated by a transmitter (1) and the light reflected by the yarn surface is fed to a detector (5) and evaluated, the optical path being selected such that the receiver (5) receives light only from that side of the yarn (3) that is not illuminated.