Patent · US Expired

Hydromechanical traveling mechanism

US6250180A · kind A · utility

5Cited by

8References

8Claims

0Family size

Assignee

ZF FRIEDRICHSHAFEN AG · DE

Inventors

Jurgen Legner · Friedrichshafen, DE
Egon Mann · Friedrichshafen, DE
Siegfried Stutzle · Friedrichshafen, DE

Key dates

Filing date	Apr 27, 2000
Grant date	Jun 26, 2001
Priority date	—
Expiry date	Apr 27, 2020

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T74/19163
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A traveling mechanism having a driving motor (24) which drives a feed pump (25) and a hydrostatic variable displacement pump (2), a zero fluctuating hydrostatic variable displacement motor (1) which forms with the hydrostatic variable displacement pump (2) a hydrostatic circuit and a hydrostatically driven 2-speed gear mechanism (11) which is engaged when the torque to be transmitted is minimal and the hydrostatic variable displacement motor (1) is at zero displacement capacity.

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