Patent · US Active

Work machine having adjustable hydraulic motors

US11248363B2 · kind B2 · utility

0Cited by

10References

15Claims

0Family size

Assignee

LIEBHERR-WERK NENZING GMBH · AT

Inventors

Hans Reinhardt · Bretten, DE
Wilhelm Krautler · Koblach, AT

Key dates

Filing date	May 29, 2018
Grant date	Feb 15, 2022
Priority date	—
Expiry date	Oct 8, 2039

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16H61/44
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A work machine, preferably a mobile work machine, has an attachment device, in particular a trench cutter. The attachment device has at least two adjustable hydraulic motors for driving independent, individually controllable loads. The hydraulic supply of the adjustable hydraulic motors takes place by a hydraulic drive unit arranged externally from the attachment device, in particular by a drive unit of the work machine. The at least two adjustable hydraulic motors of the attachment device are connected to a constant pressure network provided by the hydraulic drive unit.

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