| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 137082000 | PRESSURE MODULATING RELAYS OR FOLLOWERS | 14 |
| 20090159135 | PNEUMATIC AMPLIFIER AND ARRANGEMENT FOR REGULATING A REGULATING ARMATURE OF A PROCESS PLANT - A pneumatic amplifier is provided comprising a supply air valve with a supply inlet connected to a pneumatic supply. A signal input for receiving a pneumatic input signal, a signal output for transmitting an amplified pneumatic output signal, a valve member for continuously opening or cutting off a pneumatic connection between the pneumatic supply and the signal output, and a diaphragm coupled with the valve member exposed at one side to the pneumatic input signal and having an opposite side. An exhaust air valve is provided with a bleed outlet, and a valve member for opening or cutting off a pneumatic connection between the signal output of the supply air valve and the bleed outlet, the valve members of the supply air valve and the exhaust air valve being structurally separated. The opposite side of the supply air valve diaphragm is exposed to the amplified pneumatic output signal. | 06-25-2009 |
| 20100307606 | CONTROL VALVE ASSEMBLY WITH A WORKPORT PRESSURE REGULATING DEVICE - A hydraulic system has several valve sections, each having a directional valve that controls fluid flow from a pump to a hydraulic actuator. A mechanism senses a greatest pressure among the hydraulic actuators to provide a load sense pressure. One valve sections has a pressure compensation apparatus includes a pressure compensation valve that reduces fluid flow between a given directional valve and an associated hydraulic actuator in response to pressure at a control port, and a pressure regulating valve that responds to the load sense pressure and pressure in the associated hydraulic actuator by selectively applying output pressure from the pump and the load sense pressure to the control port. | 12-09-2010 |
| 20110114196 | Electronic pressure regulator - A pressure regulator includes a valve, mechanical advantage device, actuator, controller and pressure sensor. The valve is disposed between an inlet port and an outlet port. The valve includes a pintle and seat. An actuator is provided to move the pintle away from the seat to allow the flow of gas from the inlet port to the outlet port and a pintle return spring is provided to bias the pintle towards seat. The actuator is configured to move the pintle in response to the magnitude of a control signal. A control system is provided to receive a gas pressure signal from a pressure transducer at the outlet port which detects the gas pressure at the outlet port and generate a control signal having a magnitude proportional to the detected gas pressure. | 05-19-2011 |
| 20110186144 | Pressurized Fluid Positioner Control System - The inventive technology, in embodiments, may include a controller configured to coordinate operation of valves and remotely controllable regulators that are fluidically communicative therewith, allowing the control of positioners of positioner zones that are in fluidically communicative with such remotely controllable regulators. Preferred embodiments may find application as, e.g., a pneumatic system to control positioners, whether such positioner find use in bottling applications or elsewhere. Additional aspects of the inventive technology may relate to methods for pressurized fluid positioner control. | 08-04-2011 |
| 20110214751 | PRESSURE REGULATOR DEVICE, ESPECIALLY OF THE HYDRAULIC REMOTE-CONTROL TYPE - Pressure regulator device comprising a body ( | 09-08-2011 |
| 20110290337 | Intelligent Pressure Relief Device For A Double Isolation Valve - A pressure relief device for a double isolation valve comprises a body with a valve cavity. The valve body has a pocket formed therein. A disc is disposed in the central section of the pocket. The disc is interposed between two spring-actuated seats. Each of the seats is in fluid communication with opposing valve sides. The pocket central section is in fluid communication with the valve body cavity. Each of the seats is provided with two different types of gaskets in series. In operation, reverse pressure causes retraction of the seats, thereby relieving valve body cavity overpressure. | 12-01-2011 |
| 20120279580 | PROCESS FLUID PRESSURE TRANSMITTER WITH REPLACEABLE ATMOSPHERIC VENT FILTER - A process fluid pressure transmitter for measuring a process pressure referenced to atmospheric pressure is provided. The process fluid pressure transmitter includes a pressure sensor fluidically coupled to a pair of pressure conveying conduits. The pressure sensor has an electrical characteristic that varies with the pressures applied by the pressure conveying conduits. A process fluid inlet is disposed to contact a process fluid, and is in fluidic communication with a first conduit of the pair of pressure conveying conduits. An atmospheric vent is coupled to a second conduit of the pair of pressure conveying conduits. The atmospheric vent is replaceable and has a filter element disposed therein. | 11-08-2012 |
| 20130112283 | Vacuum Connector - A connector can include a first portion with a cylindrical end. The connector can also include a second portion having a cylindrical cavity and a plurality of collars disposed along an interior circumference of the cavity and extending inward so as to contact the first portion when the first portion is inserted into the second portion and to create a seal between the cylindrical end and the cylindrical cavity. The connector can further include a pressure equalization channel with an opening toward the cylindrical cavity at one end and a valve disposed at the other end, the valve being configured to have a first position at which the pressure equalization channel is open to an exterior, and a second position at which the pressure equalization channel is sealed. | 05-09-2013 |
| 20140102549 | POSITIONER - In a comparing circuit, the value of a control signal from a higher-level device and a normal range that is set for the control signal are compared, and the result is sent to a control unit. The control unit, when sent the result indicating that the value of the control signal is outside of the normal range, forcibly adjusts the electric current signal (the adjusted electric current) to the electropneumatic converter to zero, regardless of the deviation between the value indicated by the control signal and the value indicated by the valve opening signal. The adjustment of the electric current in the control unit is performed using a normal function that is possessed by the control unit, that is, the function for changing continuously the value of the electric current signal in accordance with the deviation. | 04-17-2014 |
| 20140182701 | LIQUID TRANSFERRING APPARATUS - In a coating apparatus including: an anilox roller which is rotatably supported and in which multiple recessed cells are formed on an outer peripheral surface; and a chamber device which is in contact with the outer peripheral surface of the anilox roller and in which varnish to be coated on a sheet is delivered from a delivery path of a chamber head into a chamber, the chamber device configured to supply the delivered varnish from the chamber to the cells of the anilox roller and discharge the varnish in the chamber from a discharge hole of a chamber body to the outside, the chamber device has pressure fluctuation reducing means, in an attachment hole of the chamber body, for reducing a pressure fluctuation in the chamber of the chamber head in such a way that the pressure in the chamber is maintained constant. | 07-03-2014 |
| 137084000 | Plural series units | 1 |
| 20100139781 | APPARATUS TO CONTROL FLUID FLOW - Apparatus to control a fluid flow are disclosed. An example fluid flow control apparatus described herein includes a signal stage comprising a signal stage relay having a supply plug being operatively connected to a valve seat at a first end and an exhaust seat at a second end and a seal operatively coupled to the supply plug such that the seal provides a feedback area to apply a fluid pressure feedback force to the exhaust seat. | 06-10-2010 |
| 137085000 | With counter-balancing pressure feedback to the modulating device | 3 |
| 20090194169 | Digital Closed Loop Proportional Hydraulic Pressure Controller - A digitally controlled current to pressure converter (CPC) is provided. A digital CPC utilizes a digital controller and an onboard pressure transducer to accurately control the output pressure based upon an input analog control signal. The digital controller includes an anti-silting algorithm that provides an impulse movement of the three-way rotary valve of the CPC to loosen and flush away silt contamination from the valve. A redundant seal stack including an intermediate passage to the hydraulic drain ensures a low pressure drop across the outboard seal minimizing the potential for leakage and improving reliability of the CPC. The digital controller also includes redundancy and fault management algorithms that enable the use of multiple inputs and feedback signals for control of the CPC. Master/slave operation and transitioning is also provided by the digital controller. | 08-06-2009 |
| 20110240138 | ELECTRO-PNEUMATIC POSITIONER AND ELECTRO-PNEUMATIC CONVERTING DEVICE - An operating mode of an electro-pneumatic converting unit is stored in advance in an electro-pneumatic converting unit operating mode storing unit. A blockage location identifying function is provided in a calculating unit. The operating unit monitors the magnitude of shift and the direction of shift of the control output, relative to the nozzle back pressure, through the blockage location identifying function, and identifies whether a blockage has occurred in the fixed orifice or the nozzle/flapper mechanism based on the magnitude of shift and direction of shift of the control output, relative to the nozzle back pressure, and based on the operating mode of the electro-pneumatic converting unit, stored in the electro-pneumatic converting unit operating mode storing unit. An electro-pneumatic converting unit operating mode identifying function may be provided in the calculating unit, and the operating mode of the electro-pneumatic converting unit may be identified through this function, and the identification result may be stored in the electro-pneumatic converting unit operating mode storing unit. | 10-06-2011 |
| 20140251447 | SERVOVALVE HAVING TWO STAGES AND A PILOT STAGE ADAPTED TO SUCH A SERVOVALVE - A hydraulic servovalve having two stages and feedback members in which the movable power distribution member has clamp means for clamping the feedback member, while allowing a clamped portion of the feedback member at least one freedom of movement relative to the movable distribution member. | 09-11-2014 |
