Electro-hydraulic drive system for a machine

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United States of America Patent

PATENT NO 11781289
APP PUB NO 20220259828A1
SERIAL NO

17617042

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Importance

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Abstract

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An example hydraulic system includes a hydraulic cylinder actuator comprising a cylinder and a piston, wherein the piston comprises a piston head and a rod extending from the piston head, wherein the piston head divides an internal space of the cylinder into a first chamber and a second chamber, and wherein the hydraulic cylinder actuator is unbalanced; a first pump driven by a first electric motor to provide fluid flow to the first chamber or the second chamber of the hydraulic cylinder actuator to drive the piston; a boost flow line; a hydraulic motor actuator; and a second pump driven by a second electric motor, wherein the second pump is fluidly coupled to the boost flow line to provide boost fluid flow to the hydraulic cylinder actuator.

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Patent Owner(s)

Patent OwnerAddress
PARKER-HANNIFIN CORPORATION6035 PARKLAND BLVD CLEVELAND OH 44124-4141

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Carl, Blake Lyndhurst, US 9 21
Franzoni, Germano Arlington Heights, US 8 55
Vanderlaan, Dale Beachwood, US 9 223
Zhang, Hao Twinsburg, US 1170 5565

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