Hydraulic axis with energy storage feature

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11512716
APP PUB NO 20210239136A1
SERIAL NO

16778296

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Abstract

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A closed-circuit, self-contained hydraulic axis includes an electric motor, a hydraulic cylinder configured to be connected to a load and a main pump driven by the electric motor to pump hydraulic fluid through the circuit. Pressure connections of the pump are connected to the respective chambers of the cylinder such that the cylinder rod is configured to extend and retract depending on a direction of flow of the hydraulic fluid through the main pump. The hydraulic axis includes a main accumulator connected to the pump via first control valve, an energy storage accumulator connected to the pump via a second control valve, and a charge pump. The hydraulic axis is switchable between a first operating mode that is free of energy storage in the energy storage accumulator, and a second operating mode in which energy is stored in the energy storage accumulator.

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Patent Owner(s)

Patent OwnerAddress
BOSCH REXROTH CORPORATION5150 PRAIRIE STONE PARKWAY HOFFMAN ESTATES IL 60192
ROBERT BOSCH GMBHSTUTTGART GERMANY

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Diehl, Jim Edward Lehighton, US 1 1
Gerhard, Oliver Zellingen, DE 5 1
Gerngross, Royce Houston, US 5 4
Knoell, Reiner Burgsinn, DE 7 3

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