Patent · US Expired

Multispeed powershift reversing gear

US5787756A · kind A · utility

11Cited by

4References

6Claims

0Family size

Assignee

ZF FRIEDRICHSHAFEN AG · DE

Inventors

Fritz Leber · Friedrichshafen, DE
Wolfgang Rebholz · Friedrichshafen, DE

Key dates

Filing date	Apr 30, 1997
Grant date	Aug 4, 1998
Priority date	—
Expiry date	Apr 30, 2017

Classification

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

Abstract

The invention relates to a multispeed powershift reversing gear. To achieve a compact design, especially an axially short construction, in a multipseed reversing gear each countershaft has mounted on it a single clutch, an idler gear and up to two fixed gears. Gearwheels of reversing fear form a drive gear set, a distributor gear set and s driven gear chain. Besides the ratio of the drive gear set, a different ratio related to another clutch is established through an independent drive chain consisting of a fixed gear and an idler gear with a clutch. With the same essential design, different gear configurations can be constituted with different numbers of gears and different center distances. The reversing gear is especially designed for use in construction machinery.

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