| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 137529000 | Plural biasing means | 7 |
| 20090032121 | Check Valve - A check valve having two opposing springs to hold a ball or stopper a pre-determined distance from the valve seat so that the ball or stopper seats against the valve seat only under backflow pressure. | 02-05-2009 |
| 20100243084 | MULTIFUNCTION RELIEF VALVE AND AIRPLANE EMERGENCY HYDRAULIC POWER SOURCE UNIT HAVING THE SAME - A multifunction relief valve | 09-30-2010 |
| 20120103441 | PRESSURE CONTROL VALVE - A pressure control valve includes a housing comprising a reference pressure connection, a reference pressure chamber, a preliminary pressure connection, a preliminary pressure chamber, a control pressure connection and a control pressure chamber which are configured to cooperate with a control member moveable in an axial direction within the housing so as to adjust a desired control pressure between a preliminary pressure at the preliminary pressure connection and a reference pressure at the reference pressure connection. A driving device is configured to act on the control member. At least one first sealing device is configured to seal the reference pressure chamber against the control member. At least one second sealing device comprising a second sealing element is configured to seal the preliminary pressure chamber against the reference pressure chamber. At least one third sealing device is configured to seal the control pressure chamber against the preliminary pressure chamber. | 05-03-2012 |
| 20130160875 | PLUG VALVE WITH BOWING RIGID ARMS - A movable valve for a valve assembly is described. The present valve comprises a plug attached to an immovable mounting flange by at least two non-resilient spider-like legs comprising first and second rigid leg segments that meet at hinging apexes positioned higher than the plug. The plug resists vertical displacement by virtue of the stiff leg segments having appropriately configured curvature and length. Actuation of the valve is through vertical displacement of the plug against the biasing forces, wherein displacement of the plug causes bowing of the legs without any stretching or change in the length of the leg segments. | 06-27-2013 |
| 20130240061 | PRESSURE RELIEF VALVE - A pressure relief valve for a hydraulic press tool comprises a valve body, a fluid return channel, a needle and a seat, and the needle is movable between a closed position, in which the needle is in contact with the seat to block the channel, and an open position, wherein the needle is at a distance from the seat to allow fluid to flow in the channel, and the fluid flow then causes movement of the seat away from the needle and completes the opening of the fluid return channel. | 09-19-2013 |
| 20130248021 | Actuator For An Adjustable Damper-Valve Device - An actuator for an adjustable damping valve device includes an armature which has an axial valve stem. At least one spring loads the armature in a direction opposite to the magnetic armature force generated by a magnetic coil . The position of the valve stem is adjustable with respect to a defined valve position of the damping valve device. The spring loading the armature is supported at a spring bearing which is accessible via a housing wall of the actuator and which can be adjusted with respect to its axial position. | 09-26-2013 |
| 20140124066 | FLOW VALVE - A flow valve that may act as either an excess flow valve or a pressure relief valve has a seat and a valve body for sealing against the seat. The valve body has an integral spring arm for biasing the valve body towards or away from the seat to seal or open a flow of fluid, and a magnet cooperating with the spring arm to position the body relative to the seat to maintain the body in a first position during a normal flow condition and maintain the body in a second position in an abnormal flow condition. | 05-08-2014 |
