Patent · US Expired

Device for manufacturing pressed shapes or similar structures

US4770024A · kind A · utility

2Cited by

3References

7Claims

0Family size

Assignee

Hoesch Maschinenfabrik Deutschland AG · DE

Inventors

Walter Sauerwald · Dortmund, DE
Manfred Reyer · Dortmund, DE
Heinz-Dietmar Orth · Dortmund, DE

Key dates

Filing date	Mar 13, 1987
Grant date	Sep 13, 1988
Priority date	—
Expiry date	Mar 13, 2007

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB21D43/105
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

An arrangement for manufacturing pressed shapes and similar structures in which loading and unloading arms are driven by displacement drive mechanisms. These displacement drive mechanisms have at least two displacement cylinders with strokes that are shorter than either the displacement path of the loading arm or the displacement path of the unloading arm. There is no force transmission from the cylinders to the loading and unloading arms to provide for minimum use of driving power during acceleration intervals when the loading and unloading arms move from a stationary position to a displacement speed.

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