Patent · US Expired

Automated multiple-gear transmission

US7004878B2 · kind B2 · utility

9Cited by

8References

10Claims

0Family size

Assignee

ZF FRIEDRICHSHAFEN AG · DE

Inventors

Gerhard Gumpoltsberger · Friedrichshafen, DE
Ralf Dreibholz · Meckenbeuren, DE

Key dates

Filing date	Oct 17, 2003
Grant date	Feb 28, 2006
Priority date	—
Expiry date	Oct 17, 2023

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T74/19242
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

An automated multiple-gear transmission which includes a single planetary assembly having an annular gearwheel connected to a transmission output shaft, a first input shaft connected to one of the solar gearwheel or the planetary gearwheel web and a second input shaft connected to the other of the solar gearwheel and the planetary gearwheel web. A gearwheel assembly is connected from a transmission input shaft and includes a single countershaft and plurality of transmission ratio gearsets and a plurality of shift control elements for selectively connecting the first and second planetary assembly input shafts to the transmission ratio gearsets and a transmission housing.

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