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. 29, 1978
Filed:
Jun. 03, 1977
Ernst Fehrer, Linz, AT;
Franz Konig, Linz, AT;
Abstract
Two closely spaced apart, perforated suction drums are provided, which have parallel axes and confronting peripheral surface portions defining between them a region which is triangular in cross-section and adapted to receive fibers flying through a flight region which precedes said triangular region in a direction that is transverse to said axes. Suction means are operable to provide a suction zone in each of said confronting peripheral surface portions. Said drums are operable to rotate in the same sense so that fibers received in said triangular region and attracted to said suction zones by the operation of said suction means are twisted together by said drums to form a yarn. Yarn-withdrawing means are operable to withdraw said yarn from said triangular region toward one end thereof while holding said yarn against rotation. A throwing member is operable to move in said flight region toward said one end thereof in a plane which is transverse to said direction.