Patent · US Active

Planetary gear system, planetary differential and gear system with the planetary differential

US8979699B2 · kind B2 · utility

0Cited by

3References

3Claims

0Family size

Assignee

Schaeffler Technologies AG & Co. KG · DE

Inventors

Thorsten Biermann · Wachenroth, DE
Tomas Smetana · Herzogenaurach, DE
Florian Doerrfuss · Herzogenaurach, DE

Key dates

Filing date	Jul 14, 2011
Grant date	Mar 17, 2015
Priority date	—
Expiry date	Jul 25, 2031

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16H55/0826
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A planetary gear system having at least two planetary steps, each of which is made up of at least one set of planets and one sun, whereby the teeth of the gearwheels in the planetary drive mesh with each other in such a way that, in each of the meshing points, at least one first tooth on a first toothing of first teeth positively engages into a tooth gap of a second toothing of second teeth. First teeth of the first toothing have a tooth flank profile concavely arched, and second teeth of the second toothing have a tooth flank profile convexly arched, so that the tooth flanks in contact with each other are arched in the same directions, at least when in contact.

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