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:
Sep. 22, 1987
Filed:
Jan. 28, 1987
Walter Fretz, Freienstein, CH;
Walter Hefti, Ettenhausen, CH;
Maschinenfabrik Rieter AG, Winterthur, CH;
Abstract
A device for winding up a thread or yarn or the like into a yarn package on a rotatable, conical bobbin tube comprises a drive roller which has an intermediate rotational element fixedly coupled to a drive shaft and two lateral rotational elements disposed laterally of the fixedly coupled intermediate rotational element and rotatably supported on the drive shaft. The lateral rotational elements are interconnected by a differential transmission. The differential transmission comprises a friction coupling. This affords the advantage of a strong reduction in the danger of damage to the yarn package in the event of blockage of one of the lateral rotational elements. Furthermore, the results of faulty manipulation of the drive roller during servicing or maintenance thereof is very substantially reduced.