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:
Feb. 21, 1989
Filed:
May. 09, 1988
Fritz Stahlecker, 7347 Bad Uberkingen, DE;
Hans Stahlecker, 7334 Sussen, DE;
Gerhard Fetzer, 7334 Sussen, DE;
Eugen Bader, Birenbach, DE;
Other;
Abstract
An opening assembly for an open-end spinning arrangement is provided which includes a steel alloy fitting ring element arranged on a rotatable roller body element for opening a silver into individual fibers. The fitting ring element includes a base wall having a radial thickness no greater than 2.2 mm, and includes a plurality of radially extended teeth unitary with the fitting ring element extending from the base wall. The teeth have lateral flanks formed by at least one cirumferential groove on an outer surface of the fitting ring element, and have front and back edges formed by at least two axially extending longitudinal grooves. The front and back edges have a radial height of about 0.75-0.80 times a radial height of the lateral flanks. The base wall radial thickness has a dimension of about 0.60-0.72 times the radial height of the lateral flanks. The height of the teeth is greater than the distance between the lateral flanks of axially adjacent teeth. The teeth are inclined toward a rotational direction. The teeth have an angle between the front and back edges between about 15.degree. to 45.degree..