| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 137505000 |
With opening bias (e.g., pressure regulator)
| 162 |
| 137497000 |
Responsive to change in rate of fluid flow
| 34 |
| 137509000 |
Valve seating in direction of flow
| 9 |
| 137495000 |
With manual or external control for line valve | 3 |
| 20100089469 | FLOW REGULATOR - The invention relates to the metering of fluids at low flow rates. More particularly, the invention provides a flow regulator for flows as low as about ½ ml per hour, provided with locking means for any set value within its range. The flow regulator comprises: an inner non-revolving core element, an outer housing, having a hollow base section and being revolvably supported co-axially with the core element, first and second chambers disposed between the core element and the outer housing, each chamber having an inlet and an outlet, the outlet of the first chamber and the inlet of the second chamber being connected by a flow restriction path, a diaphragm separating the two chambers and sealing an inlet to a discharge tube when pressure in the first chamber is higher than pressure in the second chamber, and a circular spring placed in the secondary chamber below the diaphragm and around the discharge tube. The major improvement being the addition of a graduated flow rate locking ring housing a disk-like body disposed between the outlet of the discharge tube and the base portion of the outer housing. | 04-15-2010 |
| 20140261784 | Flow Control and Gas Metering Process - A system for controlling a flow may be provided. The system may comprise a first flow controller and a gas density meter. The gas density meter may be in fluid communication with the first flow controller. The gas density meter may be configured to calculate a gas density for a first gas flowing through the gas density meter. In addition, the gas density meter may be configured to output a first signal configured to cause the first flow controller to alter a first flow rate of the first gas flowing through the first flow controller. Furthermore, the gas density meter may be configured to output a density signal going to the second controller. | 09-18-2014 |
| 20190146528 | A Gas Pressure Regulator | 05-16-2019 |
| 137507000 |
With means for mounting or connecting to system | 2 |
| 20130098477 | Apparatus and Method for Providing Uniform Flow of Gas - Provided are gas distribution apparatus with a delivery channel having an inlet end, an outlet end and a plurality of apertures spaced along the length. The inlet end is connectable to an inlet gas source and the outlet end is connectible with a vacuum source. Also provided are gas distribution apparatus with spiral delivery channels, intertwined spiral delivery channels, splitting delivery channels, merging delivery channels and shaped delivery channels in which an inlet end and outlet end are configured for rapid exchange of gas within the delivery channels. | 04-25-2013 |
| 20130263944 | Apparatus and Method for Providing Uniform Flow of Gas - Provided are gas distribution apparatus with a delivery channel having an inlet end, an outlet end and a plurality of apertures spaced along the length. The inlet end is connectable to an inlet gas source and the outlet end is connectible with a vacuum source. Also provided are gas distribution apparatus with spiral delivery channels, intertwined spiral delivery channels, splitting delivery channels, merging delivery channels and shaped delivery channels in which an inlet end and outlet end are configured for rapid exchange of gas within the delivery channels. | 10-10-2013 |
| 137508000 |
Valve seat or external sleeve moves to open valve | 1 |
| 20110290347 | Pressure Regulator for a Fuel Supply Unit and Method for Production of a Pressure Regulator - A pressure regulator for a fuel supply unit on a motor vehicle. A membrane is connected to an annular element of a housing and a moving piston by a laser welding technique. A reliable sealing of the membrane is thus guaranteed even at temperatures below 0° C. The region above the piston is thus reliably separated from the region below the piston. | 12-01-2011 |
| Entries |
| Document | Title | Date |
|---|
| 20080283130 | Gas pressure regulator with a valve and piston assembly - A pressure regulator which includes a body. The body has inner walls defining an inlet port. Slidably moving within the inlet port is a hollow stem of a valve and piston assembly. The hollow stem is in slidable gas sealing contact with the inlet port. The valve and piston assembly includes a piston having a piston head with a valved opening therethrough. In the opening in the piston head is the arm of a plug. A body of the plug lies within the sliding piston held in place by a keeper spring, the keeper spring for maintaining a removed end of the plug arm against inner walls of the body. With such a structure, movement of the piston and valve assembly will be capable of unseating the plug from the valved opening in the piston allowing gas to flow from the hollow stem at the inlet port through an inner volume of the piston, through the valved opening of the piston head and into a regulated gas chamber defined in part by the inner walls of the body and an outer surface of the piston head. | 11-20-2008 |
| 20090211651 | HYDRAULIC PRESSURE DAMPING DEVICE - A hydraulic pressure damping device mainly comprises a valve body of which a joint port is provided with a control valve of which one end is provided with a first joint to valve a switch of the valve body between a water inlet and a water outlet. A second joint at the other end of control valve is conjoint with a hydraulic pressure damper to damp the hydraulic pressure. Thus, it is easy to assemble and replace the hydraulic pressure damping device, and materials and installation space may be saved. | 08-27-2009 |
| 20100000616 | FLOW ADJUSTMENT VALVE - The invention relates to a flow adjustment valve ( | 01-07-2010 |
| 20100116363 | WATER RESERVOIR FOR VEHICLE HAVING DRAIN VALVE OPERATED BY TRAVELING WIND - The present invention provides a cooling water reservoir for a fuel cell vehicle, in which a drain valve operated by traveling wind is mounted in a reservoir housing of the reservoir such that unnecessary water in an amount corresponding to the amount of product water, generated in the fuel cell stack during operation of a fuel cell system and flowing in the reservoir housing, can be discharged through the drain valve automatically in real-time, thus preventing the water in the reservoir housing from overflowing due to the inflow of the product water generated in the fuel cell stack during operation of the fuel cell system. | 05-13-2010 |
| 20100126602 | APPARATUS FOR CONNECTING AN EXTERNAL WATER FEED LINE TO AN INTERNAL WATER LINE OF A WASHING MACHINE - An apparatus is provided for connecting an external water feed line to an internal water line of a laundry care household appliance. The apparatus has a housing in which one end of an external water feed line is arranged and a safety valve for shutting off or opening a water line which is inside the housing. The housing has an opening for discharging leakage water. | 05-27-2010 |
| 20120204975 | LEAK MITIGATION FOR PRESSURIZED BI-DIRECTIONAL SYSTEMS - A bi-directional pressurized system with devices for and configured to mitigate issues associated with leak and creep phenomena at various stages throughout the system, including valves and controls to distribute a leaked amount of fluid prior to delivery to a pressure-sensitive destination and a pressure relief valve to bring an initial pressure within an acceptable range for distribution to reach a target pressure is disclosed. A startup method for mitigating leakage of the system during a rest phase, including selectively reducing the initial pressure upstream of a pressure-sensitive destination, is disclosed. | 08-16-2012 |
| 20130042930 | Hydraulic Pilot Control Unit - A hydraulic pilot control unit includes at least one pressure control valve that can be controlled by means of an actuating device. The pressure control valve includes a control piston connected to a stem by means of a neck. The stem has a resilient operative connection to the actuating device. The neck is fastened to the stem. Thus, the mass of the control piston, which tends to oscillate, is reduced compared to the prior art. | 02-21-2013 |
| 20140076426 | SEAL DISK ASSEMBLY FOR A FLUID REGULATOR - A seal disk assembly for a flow control valve includes a disk housing having a seating portion with a concave arched profile and a seal disk having a mounting portion that is received in the disk housing. The seal disk has a seal surface for engaging a valve seat. | 03-20-2014 |
| 20140076427 | Method and Apparatus for Damping an Actuator on a Fluid Regulator - A damped actuator for a fluid regulator includes a diaphragm disposed in a housing, and a damper arranged to stabilize movement of the diaphragm in response to changes in pressure inside the housing. The damper includes a ball check valve arranged to allow air to exhaust out of the housing when above a preselected pressure. The damper may include interchangeable components so as to be modifiable to have different set point pressures to achieve different backpressures inside the housing. | 03-20-2014 |
| 20140124060 | Delta P Closed Loop Pressure Diaphragm - A closed loop pressure management system for an exhaust regeneration system is provided with a first tube capable of retaining a first fluid and extending between a proximal end and a distal end, a first fitting coupled between the distal end of the first tube and an exhaust conduit for receiving an exhaust fluid, and a pressure sensor manifold. The first fitting may include a diaphragm configured to provide a sealed interface between the first fluid of the first tube and the exhaust fluid of the exhaust conduit, and communicate the exhaust fluid pressure through the first fluid pressure. The pressure sensor manifold may include at least a first inlet coupled to the proximal end of the first tube and a pressure sensor configured to determine the exhaust fluid pressure based at least partially on the first fluid pressure at the first inlet. | 05-08-2014 |
| 20140230926 | Hydraulic Safety and Movement Control System - A hydraulic safety and movement control system has an actuating cylinder or a hydraulic motor which serves to set a fitting which is preferably relevant to safety and by means of which a fluid flow, for example of a power plant or of a turbine is regulated. The system has a hydraulic control arrangement by means of which a piston or a piston rod of the actuating cylinder or a motor shaft of the hydraulic motor can be moved continuously in a control mode or normal mode. Furthermore, the system has a hydraulic safety arrangement or safety circuit by means of which the piston and/or the piston rod or the motor shaft and therefore the fitting can be moved into a predetermined safe position in the event of a system failure or in an emergency mode. | 08-21-2014 |
| 20150369379 | DIAPHRAGM VALVE WITH DUAL POINT SEAL AND FLOATING DIAPHRAGM WEB - A high purity valve ( | 12-24-2015 |
