System, valve assembly, and methods for oscillation control of a hydraulic machine

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United States of America Patent

PATENT NO 11781573
SERIAL NO

17308120

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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An example valve assembly includes a housing having an accumulator fluid passage configured to be fluidly coupled to an accumulator, a supply fluid cavity configured to be fluidly coupled to a source of fluid, a reservoir fluid cavity configured to be fluidly coupled to a reservoir of fluid, a head fluid cavity configured to be fluidly coupled to a head-side chamber of a hydraulic actuator, and a rod fluid cavity configured to be fluidly coupled to a rod-side chamber of the hydraulic actuator; a main spool that is axially-movable within the housing; and a balancing spool that is axially-movable within the housing based on an axial position of the main spool.

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Patent Owner(s)

Patent OwnerAddress
PARKER-HANNIFIN CORPORATION6035 PARKLAND BLVD CLEVELAND OH 44124

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Slattery, Brian B Hicksville, US 3 2

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