Patent · US Active

Apparatus and method for cylinder changeover with a mechanically lockable force-building cylinder

US11577481B2 · kind B2 · utility

0Cited by

8References

23Claims

0Family size

Assignee

Moog Inc. · US

Inventors

Werner Haendle · Erbach, DE
Achim Helbig · Stuttgart, DE
Christoph Boes · Reutlingen, DE
Michael Sieber · Kaufbeuren, DE

Key dates

Filing date	Dec 3, 2018
Grant date	Feb 14, 2023
Priority date	—
Expiry date	Dec 3, 2038

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF15B2211/27
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

An electro-hydrostatic drive for realizing a rapid movement and a force-building movement, comprising a hydro-machine with variable volume and/or rotational speed, driven by an electric motor, for providing a volume-flow of a hydraulic fluid, a first cylinder with a housing, a piston, a cylinder rod, and a first and a second cylinder chamber, a second cylinder with a piston, a cylinder rod, and a first and a second cylinder chamber, a moveable carrier plate, a pillar, and a clamping apparatus to clamp and/or unclamp the first cylinder to the pillar, where the hydraulic drive has a closed hydraulic circuit, which has, when run, a positive pressure above atmospheric pressure and which, by utilizing the hydro-machine, can pressurize either the first or the second cylinder chamber of the first cylinder and/or the first or the second cylinder chamber of the second cylinder. The moveable carrier plate is connected both to the first cylinder and to the second cylinder. For the force-building movement, the first cylinder is clamped, by the clamping apparatus, to the pillar and one cylinder chamber of the first cylinder is pressurized with the hydraulic fluid, and for the rapid movement, th…

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