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:
Sep. 20, 1988
Filed:
Mar. 25, 1986
Applicant:
Inventors:
Assignee:
Kanai School Incorporated, Fukui, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01V / ;
U.S. Cl.
CPC ...
250561 ; 377 53 ;
Abstract
A method and apparatus for detecting a broken line up yarn, wherein a fine beam is adapted to travel widthwise across a row of line up yarns while it is radiated toward the yarns to cause flickerings which are photoelectrically converted to instantly count the current value for the number of yarns. The current value is compared with a standard threshold value, and if the current value is different from the threshold, an alarm signal is emitted indicating an abnormal condition. The present invention can be used as a broken yarn detecting technique for devices dealing with many line up yarns such as a warp knitting machine, a loom, a warping machine and so on.