Patent · US Active

Multi-gear powershift transmission

US8424403B2 · kind B2 · utility

1Cited by

6References

20Claims

0Family size

Assignee

ZF FRIEDRICHSHAFEN AG · DE

Inventors

Vladimir Muhlbach · Reichenau, DE
Robert Morrison · Tettnang, DE

Key dates

Filing date	Mar 23, 2009
Grant date	Apr 23, 2013
Priority date	—
Expiry date	Jan 3, 2030

Classification

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

Abstract

A multi-gear powershift transmission for a working machine, in particular a forklift truck, which has a driveshaft (2) driven by a torque converter (1) such that, by way of fixed wheels (8, 13, 18, 23), loose wheels (10, 15, 20, 27) and shift clutches (4, 9, 19) arranged on countershafts (7, 12, 22) in a first transmission, at least two forward gears and two reverse gears can be engaged. The powershift transmission can be supplemented with a further countershaft (24) having a fixed wheel (25), a clutch (26) and a loose wheel (27) in order to produce a second powershift transmission in which three gears in the forward driving direction and three gears in the reverse driving direction are engageable.

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