|WALVOIL S.P.A. Patent applications|
|Patent application number||Title||Published|
|20110132472||DEVICE FOR CONTROLLING A PILOT PRESSURE SIGNAL||06-09-2011|
|20110114203||PRESSURE RELIEF VALVE - An adjustable pressure relief valve for use in hydraulic circuits, particularly for controlling pressure transients—acceleration and deceleration—of hydraulic motors subject to inertia forces (progressive anti-shock pressure relief valves) is characterized by reduced leakage, involving a reduced influence of flow forces during valve control, as well as reduced pressure losses; these characteristics prevent the hydraulic motor from rotating when it is subject to a drive load and is not powered, eliminate vibrations and instability of valve-regulated pressure, especially at low flow rates, and ensure an adjustment value varying according to the flow rate through the valve. A further characteristic of the valve is the reduced number of its components, resulting in greater cost effectiveness.||05-19-2011|
|20100176324||LOAD SENSING DIRECTIONAL CONTROL VALVE WITH AN ELEMENT HAVING PRIORITY UNDER SATURATION CONDITIONS - The invention relates to the field of load sensing, flow sharing directional control valves for controlling an operating machine, such as an excavator. The directional control valve of the present invention is particularly characterized by the addition of at least one element (E||07-15-2010|
Patent applications by WALVOIL S.P.A.