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:
Jul. 01, 2008
Filed:
Sep. 03, 2004
Heinz-georg Wassenhoven, Mönchengladbach, DE;
Heinz-Georg Wassenhoven, Mönchengladbach, DE;
Oerlikon Textile GmbH & Co. KG, Monchengladbach, DE;
Abstract
A feeding trough for a sliver opening device of an open-end spinning device, having a concave gripping area for conveying a sliver, lateral walls for guiding the sliver, and a concavely curved support surface for fixing a fiber tuft combed by an opening roller, wherein the feeding trough is pivotable around a shaft parallel to the axis of the opening roller. The feeding trough () is arranged in its working position with a gap width A of 0.7 to 1.5 mm between the support surface () and adjoining tips () of the opening roller set () at a combing-in point K, which is constantly reduced to a gap width B of ≦0.5 mm over an angle area W in the direction of rotation of the opening roller () of at least 30°. The gap width opposite the direction of rotation of the opening roller () up to a transition area () between the support surface () and the gripping area () substantially increases by only an amount such that, when pivoting the feeding trough () opposite the direction of rotation of the opening roller (), a contact with the tips of the teeth () is avoided.