| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 137628000 | Sequentially progressive opening or closing of plural valves | 19 |
| 20080216908 | CONTROL SYSTEM FOR A MULTI-SPEED TRANSMISSION - A hydraulic control circuit for a transmission includes a plurality of solenoids and valves in fluid communication with a plurality of actuators. The actuators are operable to actuate a plurality of torque transmitting devices. Selective activation of the solenoids allows for a pressurized fluid flow to activate at least one of the actuators in order to shift the transmission into a desired gear ratio. | 09-11-2008 |
| 20080223467 | Method and device for regulating a pressure in a hydraulic system - The present invention relates to a method for regulating a pressure in a hydraulic system for operating at least one actuator in a subsea installation, having a fluid supply line ( | 09-18-2008 |
| 20140014208 | HYDRAULIC CONTROL DEVICE | 01-16-2014 |
| 20160116073 | PISTON VALVE - A valve for controlling a fluid flow comprising; an inner sleeve having a control surface and a middle sleeve, wherein a first movement of the inner sleeve with respect to the middle sleeve can be carried out, wherein the valve comprises a control piston, wherein the first movement prompts a second movement of the control piston, whereby the valve is moved into a switched state. | 04-28-2016 |
| 137629000 | Pressure equalizing or auxiliary shunt flow | 11 |
| 20090314364 | PRESSURE RELIEF VALVES AND PNEUMATIC CONTROL SYSTEMS - A pressure relief valve includes a lever plate, a first spring, a fitting, and a guide assembly. The fitting has a first side, a second side, and a flange having a rounded end and includes a surface with which a first end of the first spring contacts. The guide assembly has two sides, two concavities, and at least a portion of the guide assembly extends through the opening of the lever plate, the first concavity is formed on the first side of the guide assembly and contacts the fitting flange rounded end, and the second concavity is aligned coaxially with the first concavity. A rounded end of a rod of the diaphragm assembly contacts the second concavity. The second spring is adapted to supply a second force against the diaphragm assembly to move the lever plate in a second direction that is substantially opposite the first direction. | 12-24-2009 |
| 20140007966 | PRELOADING GATE VALVE SYSTEM - A preloading gate valve system is defined by preloading valve assembly integrated into a gate valve. The preloading gate valve system comprises: a gate valve; a gate; a preloading valve arrangement; and a means for control. The gate valve has an upstream cavity and a downstream cavity, and a gate disposed within the gate valve, wherein the gate is movable between open and closed position of the gate valve. The preloading valve arrangement defines an at least one preloading cavity and an at least one preloading valve. The at least one preloading cavity permits fluid to enter the gate valve through the at least one preloading cavity, through the at least one preloading valve, and into the gate valve. The means for control serves as a control interface allowing opening/closing of the gate. | 01-09-2014 |
| 20150059900 | ROTARY VALVE - A rotary valve capable of high flow rates, minimal pressure drop, and rapid actuation is presented. According to one aspect, the rotary valve is characterized by a unique pressure balancing system operating on the rotary spool of the valve to reduce side force caused by pressure at the flow ports. According to another aspect, the rotary valve ( | 03-05-2015 |
| 137630000 | One valve seats against other valve (e.g., concentric valves) | 8 |
| 137630120 | Gate | 4 |
| 20130263954 | Gate Valve Pressure Equalization System - Embodiments of a gate valve equalization system comprise: a gate valve; a gate; a preloading valve arrangement; a floating coupler assembly; a relief valve arrangement; and a means for control. The preloading valve arrangement permits fluid to enter the valve body from the upstream side of the gate. The means for control serves as a control interface allowing engagement of the floating coupler assembly and opening/closing of the gate valve. Engagement of the floating coupler, engages the assembly relief valve arrangement and allows redistribution of fluid pressure and circulation of fluid from one side of the gate to opposing side of the gate within the gate valve. | 10-10-2013 |
| 20150090355 | Solenoid-Powered Gate Valve - A solenoid-powered gate valve that provides a reliable, high quality seal with a reduced operating force requirement. The valve includes a solenoid coil and armature connected to a valve mechanism, with the valve mechanism including a conduit having a connection opening, an oppositely-disposed pocket, and a sprung gate assembly linearly movable between the connection opening and the pocket. The sprung gate assembly includes a first gate member with an opening, a second gate member with an opening, and an endless elastic band retained between the first and second gate members, with the openings and endless elastic band collectively defining a passage through the sprung gate assembly, with the first and second gate members being mechanically coupled to the armature for reciprocating linear movement between the connection opening and the pocket. The endless elastic band allows an interference fit within the pocket with reduced frictional opposition to gate movement. | 04-02-2015 |
| 20150122360 | ELECTRONIC EXPANSION VALVE - An electronic expansion valve is provided, which includes a main valve cavity. A sleeve is fixed in the main valve cavity. A lower end part of the sleeve is supported by a valve seat, and the lower end part of the sleeve surrounds a main valve port. A valve core seat is axially movably arranged in the sleeve. A lower part of the valve needle component extends into the sleeve to open and close the valve core valve port. A circumferential side wall of the sleeve is provided with a first communicating hole close to the main valve port and a second communicating hole away from the main valve port. The structural design of the electronic expansion valve may prevent an excessive impact on a valve core seat caused by the refrigerant with high pressure when the refrigerant flows forward, thereby preventing the eccentricity of the valve core seat. | 05-07-2015 |
| 20150136260 | ELECTRONIC EXPANSION VALVE - An electronic expansion valve includes a drive component including a screw rod which reciprocates axially and a nut which cooperates with the screw rod by screw threads, and a lower end of the screw rod forms the valve needle component. A sleeve is fixed in the main valve cavity, an upper portion of the sleeve cooperates with the nut, and a lower end of the sleeve is supported by the valve seat and surrounds the main valve port. The valve core seat is axially movably arranged in the sleeve, and the lower end of the screw rod extends into the sleeve to open and close the valve core valve port. The structural design of the electronic expansion valve prevents an excessive impact on a valve core seat caused by the refrigerant with high pressure when the refrigerant flows forward, thereby preventing the eccentricity of the valve core seat. | 05-21-2015 |
| 137630130 | With balancing chamber | 3 |
| 20140174576 | SHUT-OFF TRIM INCLUDING SPRING LOADED CHECK VALVE - In accordance with the present invention, there is provided a bi-directional shut-off trim for a valve which possesses the functional attributes of a pilot operated trim and a balanced trim through the integration of a spring loaded check valve into a pilot trim. In forward flow isolation, the bi-directional shut-off trim of the present invention acts as a normal pilot operated trim. In reverse flow, the check valve of the shut-off trim opens to balance the pressure on either side of the plug thereof. | 06-26-2014 |
| 20140182723 | SHUT-OFF TRIM INCLUDING SPRING LOADED CHECK VALVE - In accordance with the present invention, there is provided a bi-directional shut-off trim for a valve which possesses the functional attributes of a pilot operated trim and a balanced trim through the integration of a spring loaded check valve into a pilot trim. In forward flow isolation, the bi-directional shut-off trim of the present invention acts as a normal pilot operated trim. In reverse flow, the check valve of the shut-off trim opens to balance the pressure on either side of the plug thereof. | 07-03-2014 |
| 20140182724 | SHUT-OFF TRIM INCLUDING SPRING LOADED CHECK VALVE - In accordance with the present invention, there is provided a bi-directional shut-off trim for a valve which possesses the functional attributes of a pilot operated trim and a balanced trim through the integration of a spring loaded check valve into a pilot trim. In forward flow isolation, the bi-directional shut-off trim of the present invention acts as a normal pilot operated trim. In reverse flow, the check valve of the shut-off trim opens to balance the pressure on either side of the plug thereof. | 07-03-2014 |
| 137630150 | Actuator moves both valves | 1 |
| 20140261817 | VALVE ASSEMBLY INCLUDING PRESSURE RELIEF MECHANISM - A valve assembly includes a housing having a first chamber, a second chamber, a valve seat disposed between the first chamber and the second chamber, a valve head disposed in the housing and moveable relative to the housing, a valve stem operatively coupled to the valve head for moving the valve head between the open and closed positions, and a pressure relief mechanism including a plug coupled to the valve stem and extending along a plug axis in the bore of the valve head moveable relative to the valve head from a sealed position preventing fluid communication through the bore to an unsealed position allowing fluid communication through the bore for relieving pressure differences between the first chamber and the second chamber when the valve head is in the closed position. | 09-18-2014 |
| 137630160 | With subsequent closing of first opened port | 1 |
| 137630170 | Simultaneously moved port controllers | 1 |
| 20140137969 | VALVE ASSEMBLY - A valve assembly includes a housing having a first chamber, a second chamber, and a valve seat disposed therebetween. A valve head disposed in the housing and is moveable between an open position and a closed position. The valve head defines a bore extending along an axis from the first chamber to the second chamber when the valve head is in the closed position. A valve stem is disposed in the bore and is coupled to the valve head in the bore for moving the valve head between the open and closed positions. The valve assembly allows for selective fluid communication between the first and second chambers to alleviate pressure differences between the first and second chambers. In one embodiment, the valve stem moves in the bore between a sealed position and an unsealed position. In another embodiment, a check valve is disposed in the bore. | 05-22-2014 |
| 137630180 | Screw-actuated differential valves | 1 |
| 20150122361 | VALVE - A valve includes: a first chamber having a fuel supply opening configured to supply fuel for ignition; a second chamber adjacent to the first chamber, and having a fuel discharge opening from which the fuel is discharged; an opening/closing hole configured to communicate the first chamber with the second chamber; an opening/closing member configured to open and close the opening/closing hole; a first contact spring having one end contacting an end of the opening/closing member at a side of the first chamber, and configured to apply pressure to the opening/closing member; a first control knob mounted to another end of the first contact spring of the first contact spring; a diaphragm mounted to an end of the opening/closing member at a side of the second chamber; a second contact spring having one end connected to the diaphragm; and a second control knob coupled to another end of the second contact spring. | 05-07-2015 |
| 137630190 | Lost motion | 2 |
| 137630200 | Cam determines sequence | 1 |
| 20160130992 | VALVE ACTUATING DEVICE - It relates to a valve actuating device ( | 05-12-2016 |
| 137630210 | Rotary concentric valves | 1 |
| 20090151803 | HYBRID SPOOL VALVE FOR MULTI-PORT PULSE TUBE - The problems of reducing the torque required to turn the valve, eliminating wear dust, and extending the life of the valves in Gifford McMahon (G-M) type multi-port pulse tube refrigerators are solved by using a rotary spool valve having radial clearance to control flow to and from the regenerator, and using face seal ports on the end of the spool to control flow to and from the pulse tubes. | 06-18-2009 |
