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:
Nov. 17, 1981
Filed:
Jan. 04, 1980
Applicant:
Inventor:
Karl W Wueger, Wakefield, RI (US);
Assignee:
Leesona Corporation, Warwick, RI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D03D / ; G01N / ;
U.S. Cl.
CPC ...
139352 ; 139353 ; 356429 ; 250571 ; 66163 ;
Abstract
Loss of tension in individual warp threads is detected in the lease zone by directing a flow of air against one side of the warp threads within the lease zone to displace any relatively untensioned thread toward the opposite side of said zone and detecting such displacement photoelectrically. Preferably, the photoelectric detector is insensitive to disturbances other than thread displacement.