Patent · US Active

Gear unit for a compound transmission

US9528572B2 · kind B2 · utility

0Cited by

11References

16Claims

0Family size

Assignee

ZF FRIEDRICHSHAFEN AG · DE

Inventors

Raphael Himmelsbach · Friedrichshafen, DE
Michael Wechs · Weißensberg, DE
Karl Grad · Ruderting, DE
Stefan Beck · Eriskirch, DE
Martin Rattay · Ravensburg, DE

Key dates

Filing date	Jan 29, 2015
Grant date	Dec 27, 2016
Priority date	—
Expiry date	Mar 11, 2035

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16H2200/2097
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A gear unit for a compound transmission has a planetary stage that couples an input and an output shaft for different transmission ratios. The planetary stage includes a sun gear, a ring gear and planet gears rotatably supported at a planet carrier. The planet gears have a region with two different toothings arranged axially offset with respect to an axis of rotation of the planetary stage. A meshing engagement with a first sun gear and/or a first ring gear is produced via the first toothing. The planet gears mesh at the second toothing with a second sun gear and/or a second ring gear, and one component of the planetary stage is connected to the input shaft to be fixed with respect to rotation and one component is fixed at a housing, while the rest of the components can be coupled with the output shaft, respectively.

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