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:
Jun. 18, 2013
Filed:
Jul. 09, 2010
Petr Haska, Ceska Trebova, CZ;
Robert Mikyska, Dolni Dobrouc, CZ;
Christian Griesshammer, Winterthur, CH;
Petr Haska, Ceska Trebova, CZ;
Robert Mikyska, Dolni Dobrouc, CZ;
Christian Griesshammer, Winterthur, CH;
Maschinenfabrik Rieter AG, Winterthur, CH;
Abstract
An air spinning device has a nozzle body and a hollow spindle with a spindle tip and a longitudinal axis, wherein the spindle tip protrudes into the nozzle body. An outlet channel having a ring-shaped cross-sectional area is formed between an outside surface of the spindle tip and an inside surface of the nozzle body. The gap width at a certain location of the outlet channel normal to the longitudinal axis of the spindle is constant over the circumference of the spindle. The outside surface of the spindle tip and/or the inside surface of the nozzle body is/are shaped in such a way that at least two constrictions are formed in the outlet channel in its course in the direction of the longitudinal axis of the spindle, wherein the outlet channel has a ring-shaped cross-sectional area at each of these constrictions smaller than the ring-shaped cross-sectional area of the outlet channel upstream and downstream from each of these constrictions.