| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 251129120 | With limit control | 14 |
| 20080258089 | VALVE ELEMENT OPENING/CLOSING DEVICE - A valve element opening/closing device may include a main body, an inflow pipe, an outflow pipe, a valve element, and a drive part for driving the valve element to open and close a flow passage. The drive part may include a linearly moving mechanism part for driving the valve element, which may include a rotary power transmission member, a linearly moving member for moving the valve element, a turning prevention mechanism, and an urging member for urging the valve element in a closing direction. The turning prevention mechanism may include a shaft turnably supporting the rotary power transmission member, and a shaft hole formed in the linearly moving member that is supported by the shaft, and the shaft is engaged with the shaft hole to prevent turning of the linearly moving member. | 10-23-2008 |
| 20090072173 | Flow control valve - An object is to provide a flow control valve that is capable of reducing or eliminating backlash generated between a male threaded portion and a female threaded portion engaged with the male threaded portion and preventing or eliminating hysteresis in the flow level. The flow control valve includes a body having a fluid inlet and a fluid outlet, a cover attachable to the body, a motor disposed in a space defined by the body and the cover, a valving element connected to a rotary shaft of the motor with a screw member, and an urging member that urges the valving element toward the motor side or toward the side opposite to the motor. | 03-19-2009 |
| 20090101856 | Gate valve actuator - In combination with an external actuator for electrically operating a gate valve for use with a recreational vehicle, a gate valve within a housing, a flow passageway, a valve closure member moveable transversely of the flow passageway to cause the passageway to open and close. The valve closure member comprises a valve stem and a connected handle. Also provided is an electrical control unit with a motor, an electrical drive means and a drive shaft to engage the handle. A switch means electrically connected to the control unit has an on and off position. In the on position, the actuator lifts the handle to move the gate and open the flow passageway. In the off position, the actuator retracts the handle to move the gate linearly to close the flow passageway. Also provided is a releasable ring pin which confines the handle and which, when removed, enables the manual override of the external actuator. | 04-23-2009 |
| 20090108220 | Drain valve actuators and methods of controlling drain valves - A valve actuator operates a valve, such as a drain valve of an industrial washing machine. The valve actuator has a permanent magnet DC motor which drives a gear train which rotatably drives an output shaft. The output shaft is engaged with the drain valve and moves the drain valve to open and closed positions as desired. The valve actuator also has a controller which controls operation of the valve actuator. The controller provides power to the motor only when needed to open and close the drain valve. The controller does not provide power to the motor when the drain valve is in the open and closed positions. | 04-30-2009 |
| 20090121170 | Valve Drive Device - A valve drive device which can prevent a locknut fixing a stem nut to a drive sleeve from getting loosened. The valve drive device comprises: the stem nut for screwing a valve stem thereinto; the drive sleeve engaging with a male spline formed on a peripheral outer surface of said stem nut, said drive sleeve including a worm gear on a peripheral outer surface thereof; a worm in meshing engagement with said worm gear; and a housing that supports said drive sleeve by bearings. The valve drive device further comprises: a stem nut fastening member having a first male screw that engages with a female screw provided on a peripheral inner surface of said drive sleeve; and a locknut that engages with a second male screw provided on a reduced diameter portion of said stem nut fastening member, said second male screw having a reverse screw thread relative to said first male screw, so that no slack may arise between said stem nut fastening member and said drive sleeve. | 05-14-2009 |
| 20100270486 | VALVE DEVICE - A valve device has integrally assembled thereto a valve side housing | 10-28-2010 |
| 20110133106 | Method and Device for Controlling an Actuator - In a method and a device for controlling an actuator, the first setpoint value for the position of the actuator is predefined. A change in the setpoint value for the control of the actuator to the first setpoint value is limited to a first setpoint value change limitation. For the reaching of the first setpoint value, a second setpoint value is predefined. A change in the setpoint value for the position of the actuator to the second setpoint value is limited to a second setpoint value change limitation. If the actual value of the change of the setpoint value to the first setpoint value using the first setpoint value change limitation would be greater than the change of the setpoint value to the second setpoint value using the second setpoint value change limitation, the first setpoint value is predefined for the setpoint value and the change in the setpoint value for the control of the actuator to the first setpoint value is limited according to the first setpoint value change limitation. | 06-09-2011 |
| 20120080623 | ELECTRIC VALVE FOR REFRIGERANT CONTROL - An electric valve for refrigerant control is provided, which includes: a base; a cover adapted to cover the base; a rotor adapted to perform stepping motions in a rotating direction by means of a stator disposed outside the cover; and a drive pad rotated by receiving a rotating force from the rotor through decelerating gears, wherein the base has a first port through which a refrigerant is introduced to the space inside the cover and at least two or more second ports through which the refrigerant introduced through the first port is discharged, and the drive pad has a contact surface contacted with the surface of the base and an open surface stepped from the contact surface and forming a passage extended to the second ports in accordance with the operation of the drive pad. | 04-05-2012 |
| 20120153198 | Actuator - An actuator for displacing a control device including a valve, a gate valve or the like, in particular for use in oil or gas production systems, said actuator comprising an electric drive and a thread drive displaceable by means of said electric drive. The thread drive comprises at least a threaded spindle and a screw nut. The threaded spindle is displaceable in a substantially axial direction between an advanced position and a retracted position so as to displace the control device. | 06-21-2012 |
| 20130068978 | INDUCTIVE ROTATION ANGLE SENSOR AND METHOD OF MOUNTING THE SAME - An inductive non-contact rotation angle sensor used in a motor-driven throttle valve unit is such that a circuit substrate to which a stationary conductor and an electronic circuit are attached is secured to a resin cover without the use of an adhesive. A TPS substrate as the circuit substrate and an electric conductor are electrically connected to each other by pressure welding (press fit). The circuit substrate and the electric conductor can be formed of the same molding resin as a single molded body. Thus, it is not necessary to prepare another metallic conductor (a bonding wire) and also welding and soldering are eliminated. Further, since the TPS substrate is covered by the same material as cover resin, a process of bonding the substrate to the cover can be omitted, which allows for a reduction in manufacturing cost. | 03-21-2013 |
| 20130134336 | ELECTRIC THREE-WAY VALVE - An electric three-way valve comprises: an input port, a plurality of output ports and a valve core which rotates in a sliding manner in the valve seat by a driving force of a motor unit, wherein the valve core selectively opens or closes the plurality of output ports, the motor unit is attached as a separated constituent to an outside of an upper end surface of a cylindrical casing introducing refrigerant, the valve core is driven by a gear unit which transmits the driving force of the motor unit and is disposed inside the cylindrical casing, the cylindrical casing includes one opening portion and a side wall with an apex portion, a housing which is fixed to a cylindrical wall portion of the apex portion and is equipped with the motor unit is uprightly formed in the other opening portion, and the housing is attached to the cylindrical casing. | 05-30-2013 |
| 20150060711 | GAS SHUT-OFF VALVE - A gas shut-off valve for installation in gas meters, has a valve disk that can be moved in the longitudinal direction with respect to its valve seat. The movement is realized by a linear unit held in the longitudinal direction in a valve casing, which is actuated by an electric motor via reduction gearing. The valve seat has a lip seal. The electric motor is a small DC motor. The reduction gearing and the linear unit, are installed in a panel of the valve casing. The linear unit is a rack-and-pinion gearing or a sliding-screw gearing, having an adjusting-nut element and an adjusting rod. | 03-05-2015 |
| 20160102775 | FLOW CONTROL SYSTEM AND METHOD - The present invention discloses an electrical actuator, comprising an electrical device and a drive train detachably associated with the electrical device for transmission of power for driving a detachably coupled external equipment. | 04-14-2016 |
| 20160169104 | VARIABLE BLEED VALVE SYSTEMS INCLUDING A STOP MECHANISM WITH A SELF-LUBRICATING FOLLOWER NUT ASSEMBLY | 06-16-2016 |
