Patent · US Expired

Multi-stage reversing gear changeable under load

US5524500A · kind A · utility

7Cited by

4References

10Claims

0Family size

Assignee

ZF FRIEDRICHSHAFEN AG · DE

Inventors

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

Key dates

Filing date	Apr 26, 1995
Grant date	Jun 11, 1996
Priority date	—
Expiry date	Apr 26, 2015

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T74/19405
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

The invention relates to a multi-stage reversing gear (1) that is changeable under load, especially as used in construction machines. The gear has a four-speed transmission (3) preferably fitted downstream of a changing set (2). The gear ratios can be changed via synchronous clutches (24, 25). To achieve compact construction, idler gears (11, 12) of the changing set (2) permanently engage with a fixed gear (14) of the transmission (3). The fixed gear (14) is fitted on a countershaft (15). The drive pinions (16, 17 or 20, 21) of the gear ratios are arranged to the left and right of the fixed gear (14) in relation to the longitudinal section of the reversing gear (1).

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