Friction roller planetary gearing and speed-changing and differential gearing

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United States of America Patent

PATENT NO 9341245
APP PUB NO 20150065287A1
SERIAL NO

14535243

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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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.

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Patent Owner(s)

  • VOLKSWAGEN AG

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hanke, Stefan Braunschweig, DE 4 22
Lutz, Andreas Braunschweig, DE 116 1009
Möckel, Jörg Sassenburg, DE 11 40
Petersen, Rainer Wolfsburg, DE 11 56

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