Patent · US Active

Multi-step transmission

US8161836B2 · kind B2 · utility

0Cited by

7References

6Claims

0Family size

Assignee

ZF FRIEDRICHSHAFEN AG · DE

Inventors

Jurgen Rauter · Friedrichshafen, DE
Martin Lamke · Ravensburg, DE

Key dates

Filing date	Mar 23, 2009
Grant date	Apr 24, 2012
Priority date	—
Expiry date	Feb 13, 2030

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T74/19233
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A multi-step transmission having at least a reverse drive gear, several forward drive gears, a main shaft (1) and two counter shafts. The power flow in forward drive can be split up and be distributed to both counter shafts and further transferred to the main shaft (1). The forward drive gears each include two counter shaft gears and one idle gear which is supported on the main shaft (1). In contrast, only one of the two counter shafts (2) is assigned and associated with a reverse gear (3) such that the flow of power, in a reverse drive gear (3), is transferred through a single counter shaft (2).

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