Patent · US Active

Group transmission device

US8915160B2 · kind B2 · utility

3Cited by

5References

10Claims

0Family size

Assignee

Daimler AG · DE

Inventors

Manfred Guggolz · Rutesheim, DE
David Ulmer · Schenefeld, DE

Key dates

Filing date	Aug 19, 2012
Grant date	Dec 23, 2014
Priority date	—
Expiry date	Mar 10, 2033

Classification

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

Abstract

In a group transmission arrangement, in particular a commercial vehicle group transmission arrangement, comprising a main group with a central synchronizing unit for synchronizing at least two main group shifting units for changing a main group transmission ratio, includes at least one auxiliary group with at least one auxiliary group shifting unit for changing an auxiliary group ratio, wherein a control unit is provided to actuate in a shifting operation the auxiliary group shifting unit and a central synchronizing unit in order to change an overall gear ratio, the control unit is adapted to actuate the auxiliary group shifting unit and the central synchronizing unit in parallel at least intermittently.

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