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:
May. 17, 2016
Filed:
Nov. 06, 2014
Volkswagen Aktiengesellschaft, Wolfsburg, DE;
Rainer Petersen, Wolfsburg, DE;
Jörg Möckel, Sassenburg, DE;
Andreas Lutz, Braunschweig, DE;
Stefan Hanke, Braunschweig, DE;
Volkswagen Aktiengesellschaft, Wolfsburg, DE;
Abstract
A friction roller planetary gearing includes a first and a second sun which are axially displaceable with respect to one another and at least one of the suns is connected for conjoint rotation to a sun shaft. Stepped planets roll on the suns, on a first annulus and on a second annulus. The suns, the annuluses and the stepped planets are configured as friction rings. The second annulus is axially displaceable relative to the first annulus. A first torque-dependent axial displacement device controls a contact pressure between the suns and contact surfaces of the planets by using a torque-dependent axial displacement of at least one of the suns. A second torque-dependent axial displacement device controls a contact pressure between the annuluses and contact surfaces of the planets by using a torque-dependent axial displacement of at least one of the annuluses.