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. 13, 1990
Filed:
Jun. 01, 1989
Kazuhiro Tanaka, Tokyo, JP;
Shinji Wakai, Tokyo, JP;
Masayuki Koriyama, Tokyo, JP;
Keizo Shizuka, Tokyo, JP;
Jotaro Uehara, Tokyo, JP;
Nissan Motor Co., Ltd., Yokohama, JP;
Abstract
A weft threading system for threading a weft yarn prior to restart of weaving operations of a fluid jet loom. The weft threading system is comprised of a weft winding arm forming part of a weft storage unit, arranged to wind the weft yarn on a drum under relative rotation between the weft winding arm and the drum. The weft winding arm is pipe-shaped so that an air jet is passed therethrough and ejected from its tip end section. The tip end section of the weft winding arm is bent so that the air jet ejected therefrom is directed to a weft guide disposed separate from the weft storage unit and on the upstream side of a weft inserting or main nozzle. The weft guide ejects an air jet in order to suck the weft yarn and project it therefrom, so that the weft yarn from the weft winding arm is automatically passed through the weft guide into the weft inserting nozzle.