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. 07, 2005
Filed:
Jul. 25, 2003
Hans-heinrich Welschof, Rodenbach, DE;
Hans-Heinrich Welschof, Rodenbach, DE;
Abstract
A longitudinal displacement unit for a shaft assembly includes a profiled sleeve () with first ball grooves (), a profiled journal (), second ball grooves (), balls () which are arranged in groups in pairs of first and second ball grooves (), and a ball cage () which is positioned between the profiled sleeve () and the profiled journal () and fixes the balls () in their axial position relative to one another. The ball cage () contains elastic rolling members which are positioned between the profiled sleeve () and the profiled journal (), so as to be radially pre-tensioned and which, during the transmission of torque, remain largely free from circumferential forces.