Patent · US Expired

Automatic transmission

US6427548B1 · kind B1 · utility

8Cited by

6References

14Claims

0Family size

Assignee

Mannesmann Sachs AG · DE

Inventors

Lutz Leimbach · Oberwerrn, DE
Reiner Voss · Usingen, DE
Thomas WIRTH · Berlin, DE
Andreas Ratte · Diez, DE

Key dates

Filing date	Feb 17, 2000
Grant date	Aug 6, 2002
Priority date	—
Expiry date	Feb 17, 2020

Classification

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

Abstract

An automatic transmission, especially for a motor vehicle, having a plurality of torque transmission paths which can be selectively activated for torque transmission. The torque transmission paths have different transmission characteristics and, based on their transmission characteristics, can be ordered in a sequence of torque transmission paths has a clutch arrangement by which at least one of the torque transmission paths can be activated. It is provided that the clutch arrangement has a clutch unit which is associated with a group of torque transmission paths and by which a torque transmission path of a group of torque transmission paths can be selectively activated. A plurality of groups of torque transmission paths are provided, each group having only one individual torque transmission path, or a plurality of groups of torque transmission paths are provided, at least one group having a plurality of torque transmission paths, or a plurality of groups of torque transmission paths are provided, at least one group having an individual torque transmission path and at least one additional group having a plurality of torque transmission paths. At least one group of torque transmissi…

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