PRESS DRIVE WITH ENERGY RECOVERY

Number of patents in Portfolio can not be more than 2000

United States of America

APP PUB NO 20210114325A1
SERIAL NO

17042292

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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An electro-hydrostatic actuator system for a press drive, having an upper piston with a press surface, which acts from a first direction, wherein the press surface of the upper piston is actuated by means of a piston rod in a hydraulic cylinder of the upper piston and traverses a first distance in a press run, and a first electro-hydrostatic actuator for driving the upper piston, comprising a first pump and a first motor generators which is controlled by a first controller. The system furthermore comprises at least one auxiliary piston with a press surface, which acts from a second direction opposite the first direction, wherein the press surface of the auxiliary piston is actuated by means of a piston rod in a hydraulic cylinder of the auxiliary piston and traverses a second distance in the press run, and a second electro-hydrostatic actuator for driving the at least one auxiliary piston, comprising a second pump and a second motor generator which is controlled by a second controller. The second motor generator is operated as a generator in the press run, thereby generating energy which is provided to the first motor generator or auxiliary piston, which are operated as motors, via the common DC bus.

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Patent Owner(s)

Patent OwnerAddress
MOOG GMBHHANS-KLEMM-STR 28 BOEBLINGEN 71034

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
KIRCH, Klaus Aachen, DE 3 0

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