Class / Patent application number | Description | Number of patent applications / Date published |
137469000 | Pop valves | 11 |
20090194174 | High-Pressure Valve - Disclosed in one aspect is a valve comprising (a) a valve body having a poppet valve chamber with an axis running there through; (b) a seat having a seat sealing surface, and a outer-seat surface, the seat located axially within the poppet valve chamber; and (c) a poppet having a poppet sealing surface, the poppet being located axially within the poppet valve chamber; wherein a poppet-seat interface is created between at least a portion of the seat sealing surface and at least a portion of the poppet sealing surface, the poppet-seat interface being at an angle β of from 20 to 90° to the axis. In one embodiment the seat is removable, allowing the geometry of at least the poppet head surface and/or the seat inside surface, which defines a fluid flow-path cross-section, to be tailored. | 08-06-2009 |
20090242041 | Pressure control valve - For downsizing, cost reduction, and better characteristic, a pressure control valve ( | 10-01-2009 |
20130306166 | PRESSURE-LIMITING VALVE - A pressure limiting valve having a housing head and a housing jacket. An axial inlet opening in a valve base is axially separated from an outlet opening. An inner valve seat connects to the inlet opening and an axially mobile valve piston is arranged to produce a closing force against a pressure (p) acting at the inlet opening. The valve body is formed as a stepped piston with a first step having a first surface that is acted upon in the axial direction by the pressure. The stepped piston has a first axial length that defines a first peripheral throttling gap with an inner surface (of the valve seat. The stepped piston also has a second step with a second surface that may be acted upon in the axial direction by the pressure, and together with the first surface (A | 11-21-2013 |
20140261782 | PRESSURE RELIEF VALVE ASSEMBLY - A pressure relief valve assembly includes a housing, a diaphragm assembly separating the housing into a sensing pressure section and a tank pressure section, the sensing pressure section configured to sense both atmospheric pressure and the pressure in the tank pressure section and the tank pressure section is configured to only sense the pressure in the tank pressure section, an orifice disposed between the sensing pressure section and the tank pressure section allowing fluid to flow in through the orifice when the pressure in the sensing pressure section is less than the pressure in the tank pressure section fluid to flow out through the orifice when the pressure in the sensing pressure section is greater than the pressure in the tank pressure section. | 09-18-2014 |
20140290758 | PRESSURE REDUCING VALVE - In a pressure reducing valve, a valve rod forms one portion of a side wall of a piston, and is connected to the piston inwardly of a sliding contact area, which is held in sliding contact with an inner wall of a body. More specifically, a connection location between the valve rod and the piston is located at the interior of the piston. | 10-02-2014 |
20160040797 | Main Stage In-Line Pressure Control Cartridge with Stepped Retainer Collar - A main stage in-line pressure control cartridge. The cartridge selectively controls flow in-line in the same direction. The cartridge is mounted inside a body and has a sliding control sleeve that can expose radial holes in the poppet to an open position and to seal the radial holes in a closed position. A retainer collar is located on the opposite end of the control sleeve. Flow is permitted in a direction from the control sleeve to the retainer collar. The body has a mating recess to accommodate a step in the retainer collar which prevents movement of the retainer collar towards the control sleeve. When fluid pressure is applied to the retainer collar in the direction of the control sleeve, the step in the retainer collar presses against the body thereby preventing the fluid pressure from moving the retainer collar. Thus, the cartridge only permits fluid flow in the direction from the control sleeve to the retainer collar but prevents fluid flow in the other direction. GLYD RINGS can also be used as seals for the control sleeve and/or the retainer collar. | 02-11-2016 |
137470000 | Pop closing valves | 1 |
20140311593 | Relief Valve - A relief valve having a crenelated exhaust ring surrounding the poppet. The crenelated exhaust ring comprises a series of alternating crenels and merlons which together define an increasing cross-sectional exhaust area circumferentially about the poppet during cracking (i.e., once the pressure in the inflatable device exceeds the cracking pressure) as the poppet rises in the relief valve in response to increased pressures and, conversely, a decreasing cross-sectional exhaust area about the poppet during closing as the poppet lowers to its re-seated, sealed position. The design of the crenels in the form of a larger upper cross-sectional area to a smaller lower cross-sectional opening, advantageously achieves a reseating pressure that is substantially equal to or slightly less than the cracking pressure while minimizing possible oscillations during re-seating of the poppet. The crenelated exhaust ring surrounding the poppet advantageously results in a relief valve having a higher flow rate at a given back pressure than would be achieved without the crenelated exhaust ring surrounding the poppet. | 10-23-2014 |
137471000 | Pop pressure reactor in inflow to valve | 2 |
20140305520 | PRESSURE RELIEF VALVE - A pressure relief valve for pressure equalization between an essentially closed space and the surrounding atmosphere is disclosed. The pressure relief valve includes a valve housing with:
| 10-16-2014 |
20150034178 | FLUID REGULATORS HAVING CORRUGATED DIAPHRAGMS - Corrugated diaphragm apparatus for improved cycle life of a diaphragm are described herein. One described example apparatus includes a valve body having an inlet and an outlet to allow fluid to flow therethrough, a backing plate disposed within a bonnet and coupled to the valve body, and first and second diaphragms. Each diaphragm has a corrugated profile and is in a stacked configuration. The diaphragms are operatively coupled to the backing plate and each of the diaphragms is clamped between the valve body and the bonnet proximate a peripheral edge of the diaphragm. | 02-05-2015 |
137475000 | Adjustable choke | 2 |
137476000 | Annular lip or baffle | 2 |
137478000 | Screw threaded | 2 |
20080236678 | Relief valve for heavy equipment - A relief valve for heavy equipment is provided, which can prevent leakage of oil due to a secession of a guide that is released when pressure is set in order to re-set the set pressure of a relief valve for maintaining a set pressure of a hydraulic circuit, and can prevent damage of an O-ring mounted to seal a gap between contact surfaces. The relief valve includes a sleeve having an inlet port and a tank flow path for returning the hydraulic fluid a hydraulic tank, a poppet for opening/closing a flow path between the inlet port and the tank flow path, a valve sheet for forming a set pressure in a pressure chamber of the sleeve, a pilot poppet for draining the hydraulic fluid in the pressure chamber to the hydraulic tank; a plug screw-engaged inside the sleeve and having a tank inlet formed thereon; a guide screw-engaged inside the sleeve and having an O-ring for sealing a gap between contact surfaces with the plug and a step portion formed on the outer surface thereof; a main piston for variably controlling the set pressure in the pressure chamber; a control plug for receiving an inflow of the pilot signal pressure; and a stopper for preventing a secession of the guide from the plug by supporting the step portion when the guide is released from the plug. | 10-02-2008 |
20140326335 | Adjustable Pressure Controlled Valve - A pressure controlled valve having a housing with a first pressure chamber for communication to a pneumatically pressurized control source. The housing has an inlet for communication with a pneumatic supply source and outlet selectively in fluid flow with the inlet. A movable valve selectively opens and closes with respect to a valve seat for selectively opening a pathway from the inlet to the outlet and closing the pathway between the inlet and outlet. The pressure chamber may be sealingly and fluidly separated from the pathway between the inlet and the outlet. The pressure chamber provides a closing biasing force on the movable valve and a resilient spring mounted in the housing provides an opening biasing force on the movable valve. | 11-06-2014 |