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:
Nov. 09, 1999
Filed:
Sep. 29, 1998
Applicant:
Inventors:
Heinz-Georg Wassenhoven, Moenchengladbach, DE;
Hans Grecksch, Moenchengladbach, DE;
Assignee:
W. Schlafhorst AG & Co., Moenchengladbach, DE;
Primary Examiner:
Int. Cl.
CPC ...
D01H / ;
U.S. Cl.
CPC ...
57406 ; 57404 ; 384317 ;
Abstract
In open-end rotor spinning devices, an axial engagement element, typically a ceramic pin, is inserted as a wear protector in a receptacle at the free end of the rotor shaft which is supported on a ball of an axial bearing. In order to receive the air displaced during the insertion of the axial engagement element, the free end of the shaft is formed with at least one radial bore connecting the receptacle with the ambient environment through which the air displaced during the insertion can escape.