Patent · US Expired

Transmission for use in power trains of motor vehicles

US6205874A · kind A · utility

15Cited by

7References

48Claims

0Family size

Assignee

LuK Getriebe-Systeme GmbH · DE

Inventors

Klaus Kupper · Bühl, DE
Thomas Pfund · Leiberstung, DE
Martin Zimmermann · Sasbach, DE

Key dates

Filing date	Feb 16, 1999
Grant date	Mar 27, 2001
Priority date	—
Expiry date	Feb 16, 2019

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T74/19251
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

The positions of a gear selecting lever in a combined automatically and manually shiftable transmission which is installed in the power train of a motor vehicle are monitored by a first sensor which transmits signals to a control circuit serving to initiate the operation of an actuator for the gear selecting lever. Certain positions of the lever are monitored and reported to the control circuit by one or more additional sensors which influence the operation of the actuator in the event of failure of the first sensor. One of the additional sensors can monitor a first range of positions of the lever including the position when the transmission is shifted into reverse gear, and another additional sensor can monitor a second range of positions of the lever including the position when the transmission is in neutral gear.

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