Hydraforce, Inc.

Travis Schmidt

Barry German

James Draffkorn

Joel Mekkes

Valeriy Kazak

David Ruxton

Scott Wickboldt

Brian Del Bene

Thomas Ptak

Scott Parker

A balancing valve includes four ports. While the pressures at a pair of balancing ports of a hydraulic balancing valve are equal, the valve maintains two other ports in a closed position. Upon a pressure differential between the balancing ports, fluid communication can occur between one of the balancing ports and either of the other ports based upon the direction of the pressure differential. A hydraulic ride control system utilizes the balancing valve together with other control valves to provide ride control functionality.

Hydraulic balancing control valve and ride control system incorporatng same

A hydraulic cartridge valve includes a movable member and a position monitoring mechanism configured to detect the position of the movable member. The position monitoring mechanism is adapted to generate a position signal indicative of the position of the movable member. The position monitoring mechanism can be in the form of a linear variable differential transformer (LVDT).

Hydraulic cartridge valve with position monitoring mechanism and hydraulic control system and method

A hydraulic control assembly includes means for holding pressure in a cylinder to inhibit boom or arm drop of a machine in the event that a hose between the cylinder and a main control valve (MCV) ruptures. The pressure holding means of the hydraulic control assembly include a hydraulic valve and a parts-in-body check assembly both configured for insertion into a valve cavity defined by a valve body. The hydraulic valve comprises a proportional piloted valve that controls pressure.

Hydraulic control system and method with electro-proportional pressure valve and integral check

Hydraulic balancing control valve and ride control system incorporating same

A hydraulic control valve maintains the pressure at a control port at a desired percentage of the pressure at two other ports as the pressure at the two other ports varies. Upon the pressure at the control port reaching a predetermined pressure setting, a fourth port will open to maintain the control port at a second desired percentage of the two other ports.

Hydraulic control valve for controlling pressure drop across motors

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Oregon City, OR, United States of America

Travis Schmidt