Patent · US Expired

Hydraulic arrangement and process for its use

US7100371B2 · kind B2 · utility

2Cited by

9References

4Claims

0Family size

Assignee

Deere & Company · US

Inventors

Marcus Bitter · Mannheim, DE
Heinz-Peter Huth · Saarlouis, DE
Michael Harald Kuhn · Hamburg, DE
Reiner Hoffmann · Mühlacker, DE

Key dates

Filing date	Sep 16, 2004
Grant date	Sep 5, 2006
Priority date	—
Expiry date	Nov 22, 2024

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF15B2211/8636
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A hydraulic arrangement is provided with at least one pressure accumulator for a hydraulic fluid, a hydraulic cylinder with at least one chamber to which pressure can be applied, a connecting line, on the basis of which the at least one accumulator is connected with the chamber, and a control unit. In order to provide an electronic pipe break safety device, an electronically controlled on-off valve is mounted in the connecting line and coupled for receiving control signals from the control unit, and a signal transmitter, which is coupled for monitoring the pressure in the connecting line is also connected to the control unit. If a pressure drop occurs in the connecting line, a signal change is generated by means of the signal transmitter, whereupon the control unit sends a signal effecting movement of the shut-off valve to its closed position.

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