Patent · US Expired

Hydraulic drive for a press

US6370873B1 · kind B1 · utility

12Cited by

3References

13Claims

0Family size

Assignee

Mueller Weingarten AG · DE

Inventors

Guenther Schaich · Kirchheim unter Teck, DE
Joachim Beyer · Ravensburg, DE

Key dates

Filing date	Jul 14, 1999
Grant date	Apr 16, 2002
Priority date	—
Expiry date	Jul 14, 2019

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB30B15/163
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A hydraulic drive for a press and in particular for a press for the simulation of the operating conditions of mechancial presses for large parts or the like is proposed. In order to also make such a hydraulic simulation press available for pilot lots or small lots with a considerable improvement in efficiency, a so-called hydraulic transformer, which consists of hydraulic devices adjustable in angular travel, is assigned to the drive.

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