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:
Apr. 27, 1993
Filed:
Sep. 23, 1991
Applicant:
Inventors:
Richard A Schewe, Loves Park, IL (US);
Richard J Faehnrich, Niles, IL (US);
Timothy R Fox, Chicago, IL (US);
Assignee:
Reed-Chatwood, Inc., Rockford, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
356430 ; 250561 ; 356238 ;
Abstract
Yarn is guided along a linear path through a light beam which is directed toward a photoelectric detector. Non-uniformities in the surface texture of the yarn cause the intensity of the light received by the detector to fluctuate rapidly as long as the yarn is moving. If the yarn stops moving as a result of breakage, the intensity of the light remains constant, and the detector produces an electrical signal indicative of the breakage.