| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 251129080 | Having means to produce proportional flow | 7 |
| 20090189103 | ELECTROMECHANICAL OXYGEN VALVE AND REGULATOR - An electromechanical valve assembly for controlling oxygen flow from a compressed oxygen source in an aircraft includes: a valve housing, an inlet, an outlet, a passageway allowing flow of oxygen from the inlet to the outlet, a spring-biased conical poppet movable within the passageway; a spring-biased pressure regulating piston engagable with the conical poppet to maintain it in an open position, a push rod engagable with the conical poppet to maintain it in a closed position, and a movable seat in the passageway that engages the conical poppet to regulate gas flow through the passageway. Actuation of an electric motor assembly to cause the seat to move upward results in closing of the valve assembly and shutting off of the oxygen flow. Actuation of the motor assembly to cause the seat to move downward results in opening of the valve assembly and regulation of the oxygen flow. | 07-30-2009 |
| 20100051842 | ELECTROPNEUMATIC PRESSURE TRANSDUCER - An electropneumatic pressure transducer. The electropneumatic pressure transducer includes a double-seated valve with a first valve seat disposed between a control pressure chamber and an underpressure connector, and a second valve seat disposed between an atmospheric-pressure connector and the control pressure chamber, and a movable plunger-type armature; a valve closure member; a membrane coupled to the plunger-type armature; and an electromagnetic circuit generating an electromagnetic force acting on the plunger-type armature. The control pressure chamber is selectively connected to one of the atmospheric-pressure connector and the underpressure connector to generate a mixed pressure in the control pressure chamber dependent on a position of the plunger-type armature. The position of the plunger-type armature is dependant on the electromagnetic force and on a pneumatic force acting on the membrane. In a rest state without current flow through the electromagnetic circuit, the valve closure member is seated on the first valve seat and is disposed at a distance from the second valve seat. | 03-04-2010 |
| 20100065765 | Proportional Control Valve - The invention relates to a proportional control valve for the variable hydraulic adjustment of the damping force of a shock absorber, for which purpose the proportional control valve has a throttle function which can be set by varying the strength I of the electric current. The invention provides that on the basis of an instantaneous level of the electrical current Iist the proportional control valve is first closed by increasing the current to a maximum current strength I | 03-18-2010 |
| 20140054479 | FLOW CONTROL PROPORTIONAL VALVE - A flow control proportional valve comprises a valve body and a valve core disposed below the valve body, a valve cover plate is disposed at an upper end of the valve core, the bottom of the valve cover plate is connected to an upper end of a connection rod, a coil rack fixedly mounted at a lower end of the connection rod is wound by an enameled wire which is connected to a power supply unit, a magnetic core and a magnetic ring are disposed under the coil rack, the magnetic ring surrounds the magnetic core, a gap is kept between the magnetic ring and the magnetic core to form a magnetic field, the coil rack is sleeved on the magnetic core and is disposed in the gap. | 02-27-2014 |
| 20140061520 | PNEUMATIC VALVE AND USE THEREOF FOR A CONNECTED CONSUMER - A pneumatic valve, in particular a pneumatic proportional pressure control valve, comprising a valve housing ( | 03-06-2014 |
| 20140209826 | PROPORTIONAL SOLENOID CONTROL VALVE - Provided is a configuration in which: a spool driven by an electromagnetic proportional solenoid is urged by a spool-returning spring configured to exert urging force in an opposite direction to a driving direction of the electromagnetic proportional solenoid; a mechanical stopper is disposed at the stroke end of the spool; current dither causes a control current to micro-vibrate, the control current driving the electromagnetic proportional solenoid; and the mechanical stopper includes a stopper-urging spring configured to allow the spool to vibrate owing to the current dither even when the spool is in contact with the mechanical stopper. A proportional solenoid control valve with this configuration is capable of reducing hysteresis at the stroke end of the spool by means of the current dither, and controlling the spool in a stable manner over the entire control range including the stroke end of the spool. | 07-31-2014 |
| 20160116078 | PROPORTIONAL VALVE - The proportional valve including a valve body, an air inlet hole and an air outlet hole being provided inside the valve body; a valve core component, the valve core component being movably disposed inside the valve body along a vertical direction; and a first film sheet, an outer side of the first film sheet being connected to the valve body, and an inner side of the film sheet being connected to the valve core component. The proportional valve has a high response speed, high precision, desirable repeatability, desirable consistency, small hysteresis, low fabrication difficulty, and low fabrication cost. | 04-28-2016 |
