Patent · US Active

Planetary transmission with continuously variable transmission ratio

US8133144B2 · kind B2 · utility

0Cited by

3References

9Claims

0Family size

Assignee

Schaeffler Technologies AG & Co. KG · DE

Inventors

Andreas Triller · Bogen, DE
Andreas Englisch · Bogen, DE
Peter Tenberge · Friedrichshafen, DE
Rico Resch · Freital, DE

Key dates

Filing date	Dec 12, 2008
Grant date	Mar 13, 2012
Priority date	—
Expiry date	Apr 18, 2030

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16H15/506
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A planetary transmission having a continuously variable transmission ratio. The transmission includes two sun wheels having sun wheel circumferential surfaces, and that are axially spaced and rotatable independently of each other around the same axis of rotation. A ring wheel is situated on the same axis as the sun wheels and has an internal circumferential surface. Planet wheels are provided having planet wheel circumferential surfaces that are in frictional contact with the internal circumferential surface of the ring wheel and the sun wheel circumferential surfaces. A web element is also provided, and the planet wheels are each rotatable about an associated planet wheel axle, which is guided in the web element so that it is movable in the radial direction relative to the transmission longitudinal axis.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.