| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 137540000 | Spring coaxial with valve | 39 |
| 20080271794 | Automated mechanical constant flow valve for air ducts - A constant flow valve is provided including a housing having a central flow passageway. The housing further includes an inlet portion, a cylindrical body portion, a frusto-conical valve portion, and an outlet portion. An obstruction plate is positioned within the housing so as to be longitudinally moveable upon a guide rod. The obstruction plate is biased by a tension and/or compression spring for biasing the obstruction plate axially towards the inlet portion and away from the frusto-conical valve portion. Preferably both a tension spring and compression spring exert force against the obstruction plate in opposition to the force exerted by air flowing into the inlet and through the central flow passageway. This mains a constant flow rate due to increased pressure differential causing the obstruction plate to move axially into the frusto-conical valve portion. Preferably, the constant flow valve includes means for adjusting the biasing means. | 11-06-2008 |
| 20080276997 | LOW RISE RATE DIRECT ACTING RELIEF VALVE - A relief valve assembly. The relief valve assembly has a housing that houses a sleeve element that surrounds a spool that has a spring guide disposed therein and is biased away from the spool by a spring. A fluid flow path is created from a valve exit of the assembly through the sleeve and spool via a series of openings, grooves and orifices in at least one position of the relief valve assembly. The fluid flow path acts to reduce pressure rise rate. | 11-13-2008 |
| 20090014073 | Pressure-regulating valve with an integrated pressure gauge - A pressure-regulating valve with an integrated pressure gauge has a body, an inlet nipple, a pressure-control device and a knob assembly. The body is tubular and has an inlet opening, an outlet and an adjustment end. The inlet nipple is connected to the inlet opening of the body and connects to a compressor. The outlet is a tube formed on the body and connects to a pneumatic tool or the like. The pressure-control device is movably placed inside the body and controls pressure of a gas flowing from the compressor to the outlet of the body. The knob assembly is rotatably mounted on the adjustment end of the body, is connected to the pressure-control device and displays and controls the pressure of the gas flowing from the compressor. | 01-15-2009 |
| 20090020171 | Cartridge with Internal Spring - A cartridge valve includes a housing body having a base wall and a cylindrical side wall extending from the base wall. An upper ceramic disk and a lower ceramic disk are disposed in the housing body. The lower ceramic disk, the base wall and at least a portion of the cylindrical side wall define a chamber, wherein water is allowed to fill the entire chamber. | 01-22-2009 |
| 20090173403 | DUAL LIFT VALVE FOR RECIPROCATING COMPRESSOR AND PUMPS - The invention provides a unique self actuating mechanical dual lift control for valves used in reciprocating compressors and pumps. The primary motivation for this concept is the ability to avoid expensive shutdown to change valves when compressor services change. The dual lift valve concept reduces valve power consumption by permitting a secondary lift to increase flow area at or near the peak piston speed. This concept may be retrofitted to some existing valves. | 07-09-2009 |
| 20100051119 | Pressure relief valve - A pressure relief valve controls the pressure in a pressure chamber of a sprayer. The pressure chamber is inside a tank from which liquid to be sprayed is pumped into the pressure chamber and pressurized. The pressurized liquid is released from the chamber via a hose and nozzle for spraying. The pressure relief valve has a holder or body with an opening therethrough. A sleeve is movable in the body and contains a compression spring. The spring is compressed against a lower end of the body by a cap which is rotatable about the holder and engages the spring. The sleeve captures a ball providing a valve against a valve seat in the holder. The sleeve constrains the motion of the valve and the spring so that the valve opens at the release pressure corresponding to the compression of the spring by the cap, and the release pressure is the same, even with repeated openings and closings of the valve. Leakage through the valve is also substantially eliminated. | 03-04-2010 |
| 20100051120 | FLUID FLOW CONTROL MEMBERS FOR USE WITH VALVES - Fluid flow control members for use with valves are described. An example poppet apparatus for use with an internal valve includes first and second opposing seating surfaces to control fluid flow through the internal valve. Additionally, the example poppet apparatus includes an aperture to receive a stem of the internal valve. Further, the example poppet apparatus includes a flow diverter to divert fluid flow through the poppet apparatus to substantially prevent the fluid flow from compressing a spring to be at least partially positioned in the poppet apparatus. | 03-04-2010 |
| 20100101668 | Check Valve - A check valve is described using the venturi effect to enhance the force supplied by forward motion of fluid to fully open the valve, and a variable spring rate spring assembly to enable the valve to close the valve more quickly at the cessation of the forward motion of the fluid, while still allowing forward flow to fully open the valve. | 04-29-2010 |
| 20110126924 | SUCTION CHECK VALVE OF AIR-CON COMPRESSOR OF VEHICLE - A suction check valve of an air-con compressor of a vehicle, may include a valve housing fixed in an intake port of the air-con compressor and having at least a housing hole, a valve core elastically supported upwards by an elastic member in the valve housing to reciprocate in the longitudinal direction of the valve housing and having at least a core groove formed along outer circumference thereof, and a valve cap connected to an upper end of the valve housing to prevent the valve core from separating from the valve housing and having a cap hole connected the intake port with the valve housing. | 06-02-2011 |
| 20110146815 | FLUID VALVE ARRANGEMENT - The invention relates to a pressure controlling valve comprising a slidable spool ( | 06-23-2011 |
| 20130019967 | MECHANICAL FUNCTION CONTROL OF CONTINUOUSLY VARIABLE TRANSMISSION HYDRAULIC SYSTEM - A simplified continuously variable transmission system control provides a variable clamping force and a differential cylinder pressure manipulation to change sheave ratios. The system control uses two pumps. The first pump provides the variable clamping force. The second pump provides pressure changes to effect ratio changes. The clamping force can be varied based upon operator demand on an associated engine. | 01-24-2013 |
| 20130174922 | PRESSURE VALVE - A pressure valve includes a spring plate configured to be displaced by a setting spindle. The setting spindle includes an adjustment screw configured to axially displace a spindle shaft on which the spring plate is provided. The adjustment screw and the spindle shaft are configured in such a way that virtually no torque is transmitted to the spindle shaft via the adjustment screw. | 07-11-2013 |
| 20130180607 | VALVE WITH PRESSURE CONTROL FUNCTION - In a valve with pressure control function for common-rail heavy oil injection systems for internal combustion engines, including a valve support, a valve piston movably arranged in the valve support and interacting with a valve seat with the valve closed, and a compression spring applying a compressive force on the valve piston in the closing direction, a pin acting on the valve piston in the closing direction is arranged to be movable by the aid of an actuating means against the compressive force of the compression spring for controllably opening the valve so as to provide a flushing function. | 07-18-2013 |
| 20140182717 | System for Increasing the Efficiency of a Water Meter - Disclosed is a system and an associated valve assembly that are adapted to increase the efficiency of an upstream water meter. By way of the valve assembly entrained water bubbles can be removed from a water supply. This, in turn, increases the density of the water running through the water meter. This ensures that the water meter is not inaccurately including entrained air as metered water. The result is more accurate water readings and reduced utility bills. | 07-03-2014 |
| 20140251465 | TIP-RESISTANT VALVE PLUGS - A tip-resistant valve plug comprises a valve head, first and second retention legs, and an anti-tip fin. The valve head defines a fluid barrier. The anti-tip fin and the retention legs extend from the same side of the valve head. The anti-tip fin comprises a groove that allows the valve head to flex along a longitudinal fin axis; the anti-tip fin extends from the side of the valve head to a fin height dimension that is greater than a relief spring compression dimension caused by the tip-resistant valve moving between a closed position and an open position; or the valve head has a smaller moment of inertia evaluated in a direction the anti-tip fin extends across the valve head than a moment of inertia evaluated in a direction normal to the direction the anti-tip fin extends across the valve head. | 09-11-2014 |
| 20150083242 | RELIEF VALVE - In the relief valve, an annular convex portion | 03-26-2015 |
| 20150107702 | SAFETY VALVE FOR LOW-TEMPERATURE THERMAL INSULATION GAS CYLINDER - The invention relates to a safety valve for a cryogenic insulated gas cylinder, which comprises a valve body, and the valve body further comprises a gas inlet flow channel, a valve seat, a slide way, a valve core and a spring, a gas inlet connecting thread and an adjusting nut. An adjusting nut exhaust hole set on said adjusting nut, a spring set between the said adjusting nut and a spring bracket with an exhaust hole. A valve assembly further comprises the valve core, a plurality of guide rings, a positioning steel ball and a valve flap, a valve core exhaust hole is provided in the valve core. The safety valve has high stability in discharge pressure and return pressure, high repeatability and good sealing performance, and is firm in structure, difficult to be damaged and high in safety. | 04-23-2015 |
| 20150292637 | SUPER HIGH FLOW PRESSURE RELIEF VENT - A pressure relief valve ( | 10-15-2015 |
| 20160053902 | CHECK VALVE - A check valve comprising a valve housing having an input opening and an output opening, a first sealing mechanism disposed in the valve housing, said first sealing mechanism having a valve head coupled with an overmold layer, a second sealing mechanism disposed in the valve housing, said second sealing mechanism having a seal coupled with a seal retainer, and a compression device coupled with the first and second sealing mechanisms, wherein said compression device is configured to exert a force on the first and second sealing mechanisms. | 02-25-2016 |
| 20160102771 | VALVE DEVICE - A valve device includes a body in which a gas flow passage is provided; and a check valve provided in the gas flow passage, the check valve including a poppet and a valve seat. The poppet excluding a block portion is in a form of a hollow shaft, the block portion being located at a distal end of the poppet and having a taper shape, and the poppet has at least one side hole that provides communication between an inside and an outside of a portion of the poppet, the portion being in the form of the hollow shaft. The at least one side hole extends obliquely with respect to a central axis line of the poppet such that the at least one side hole extends along a gas flow direction inclined with respect to a direction in which the poppet moves when the check valve opens. | 04-14-2016 |
| 20160139611 | REGULATOR UNIT - A regulator unit which includes a regulator main body, and a pressure-regulating mechanism part, being installed consecutively thereto; the pressure-regulating mechanism part being constituted by a cylindrical housing provided with a shouldered hole, the shouldered hole being formed by a smaller-diameter bore and a larger-diameter bore, the smaller-diameter bore accommodating an adjusting spring and an end cover; a ball screw being disposed in the larger-diameter bore; an operation handle being mounted to a basal end part of a threaded rod of the ball screw through a fastener; and the operation handle being capable of being turned for expanding or contracting said adjusting spring to thereby change the spring pressure applied to a diaphragm receiving plate. | 05-19-2016 |
| 20160153583 | CONTROL VALVE | 06-02-2016 |
| 20160169397 | Check valve | 06-16-2016 |
| 20220136612 | RELIEF VALVE FOR GAS - A relief valve for gas includes: a housing having a valve port connecting with an inflow passage and an outflow passage, and a tapered valve seat formed in the inflow passage to surround the valve port; a valve body having a tapered valve head part and movable between a closed position where the valve head part is seated and fits in the valve seat to close the valve port, and a full stroke position farthest from the valve seat; and a biasing member that biases the valve body to the closed position. The valve body has a seal member that is provided to externally fit on a seal groove formed on an outer circumferential face of the valve head part over an entire circumferential periphery, and to be seated on the valve seat in the closed position to seal between the valve seat and the valve head part. | 05-05-2022 |
| 137540110 | Broken valve parts retainer | 1 |
| 20130306167 | Airflow check valve - A check valve for use in an air flow line to convey pressurized air to unload a tank trailer, railroad car, or other conveying facility. It includes a housing, having a valve seat, a check valve for seating upon the valve seat, a bushing holding the valve stem for the check valve, with the bushing having a channel therein, through which the valve stem locates, and contains a spring therein that is totally encapsulated within the bushing chamber, during usage. The housing is internally contoured to enhance the flow of pressurized air therethrough. | 11-21-2013 |
| 137541000 | Spring in inlet | 2 |
| 20090301584 | LOW PRESSURE RELIEF VALVE AND METHOD OF MANUFACTURING SAME - A method for assembling and adjusting a pressure setting of a valve includes positioning a threaded spider and a poppet spring on a poppet, mounting a valve body into an assembly fixture, inserting the poppet including the threaded spider and the poppet spring positioned thereon into the mounted valve body, pushing an adjusting fork through the assembly fixture and through the valve body, engaging the threaded spider with the adjusting fork, and flowing pressurized fluid into the assembly fixture while simultaneously rotating the adjusting fork in a direction to draw the threaded spider into the valve body and to compress the poppet spring. | 12-10-2009 |
| 20150292636 | Spring Adjusting Device and Valve Assembly - The present invention relates to a spring adjusting device and a valve assembly. The spring adjusting device comprises an adjusting screw rod, a spring and a spring seat which is located between the adjusting screw rod and the spring; a groove is arranged in the spring seat, which can contain an end part of one end of the adjusting screw rod, and is provided with a cylindrical side wall. The prevent invention can prevent the end part from being separated from the groove, the spring from being bent on the whole, and the overall working performance of the valve assembly can be improved. | 10-15-2015 |
| 137542000 | Valve stem extends through fixed spring abutment | 4 |
| 20090283157 | Check Valve Assembly - A check valve assembly is provided for regulating the flow of pressurized fluid in a hydraulic circuit. The check valve assembly includes a valve housing defining a valve chamber with first and second spaced openings. A poppet is slidably arranged inside the valve chamber to transition between a seated position, in which the poppet fluidly seals one of the openings, and an unseated position, in which the poppet fluidly unseals the opening. A plurality of fins protrudes outward from one end of the poppet to engage with the inner surface of the valve chamber. A disk, which is oriented inside the valve chamber, defines a receiving slot that is configured to receive and mate with a second end of the poppet. The disk and fins cooperate to maintain the poppet in coaxial alignment with the longitudinal center axis of the valve chamber during transitions between the seated and unseated positions. | 11-19-2009 |
| 20100252127 | DRIPPER - A dripper unit comprising a base section and a perforated cap attached thereto; the base section for attaching to an irrigation pipe through which water flows, and having a conduit of a first diameter therein, such that some of the water flowing through the pipe flows into the conduit within the base section; the cap for regulating water flow out from the dripper unit, wherein the cap is characterized by having a plurality of apertures there through, each aperture having a different throughput, such that rotation of the perforated cap with respect to the base section brings a selected aperture from said plurality of apertures into alignment with the conduit, thereby regulating flow out of the dripper unit. | 10-07-2010 |
| 20160186872 | DISC CHECK VALVE SYSTEM AND METHOD - A system and method for a check valve system is provided including a plurality of interlocking guide plates that are inserted into a guide plate retainer in order to maintain their relative position to one another. A retainer nut is positioned to structurally engage the guide plates. An insert adapter receives a check valve to open and close the valve. A threaded screw engages both the check valve and the retainer nut to form the check valve system. A valve spring is positioned between the guide plate retainer and the insert adapter to bias the check valve into a closed position and to maintain a closed position as desired. The check valve system provides a low mass solution the reduces initial pressure overshoot and instability oscillations as well as providing a good flow path for fluid and high capability for back pressure. | 06-30-2016 |
| 137543000 | Yoke or cage-type support for valve stem | 1 |
| 20090000676 | Non-Return Valve - A device for shutting off the flow in pipelines, hoses or the like, in particular a non-return valve having a housing for installing in a pipeline or the like. The housing has a flow channel, of which the flowed-through cross section can be closed by a valve, the valve having a valve disc for closing the cross section and a valve stem for guiding the valve and the valve being mounted by means of the valve stem in a retaining plate, so as to be displaceable in the direction of flow. | 01-01-2009 |
| 137543150 | Head slides on guide-rod concentric with spring | 2 |
| 20150300518 | STRUCTURE OF CHECK VALVE - Provided is an attachment structure of a check valve that is easily attached to piping, and does not need time and effort of manufacturing. A valve casing having a collar part is attached so as to be sandwiched between a pair of flanges joined to each other through an annular seal body in an upstream side in a fluid flow direction. In this valve casing, a valve is biased in a seating direction to a valve seat through a shaft and a biasing means. | 10-22-2015 |
| 20150362085 | CHECK VALVE - A check valve has a body, a sealing cover, a movement unit, a sealing ring, and an elastic unit. The body has a air space and multiple vents. The air space is formed in the body and has a limiting channel. The vents are formed through the body. The sealing cover is mounted on the body and has an aligning rod. The movement unit is mounted in the air space and has a mounting rod, an aligning unit and multiple air holes. The mounting rod is slidably mounted around the aligning rod. The aligning unit is connected with the mounting rod. The air holes are formed through the aligning unit. The sealing ring is mounted around the movement unit and seals the limiting channel. The elastic unit is mounted around the movement unit and abuts between the movement unit and the sealing cover. | 12-17-2015 |
| 137543170 | Spring guides valve head | 3 |
| 20090107564 | RELIEF VALVE - The objective of the invention is to achieve a general-purpose relief valve which can be used irrespective of the diameter or thread shape of an associated relief conduit and whose relief pressure can be easily adjusted. | 04-30-2009 |
| 20150059885 | VALVE ASSEMBLY - A valve is provided for a hydraulic tank. The valve includes a main body and an end cap. The main body includes a first section, a second section and a window. The first section has a solid configuration. The first section has a shoulder configured to contact with a spring. The second section extends from the first section. The second section has a hollow configuration. The window defined on a surface of the second section is positioned towards an end of the second section proximate to the first section. The window is configured to selectively receive a fluid flow from the hydraulic tank into the main body based on a position of the valve with respect to the hydraulic tank. The end cap has a hollow configuration. The end cap is coupled to another end of the second section of the main body. | 03-05-2015 |
| 20160161012 | VALVE HAVING AN EXCHANGEABLE CARTRIDGE - Valve for fluid and gaseous media, more particularly for regulating the pressure in pipelines, containing a housing of at least one upper and lower part, a pressure adjustment unit, wherein the pressure adjustment unit comprises a spindle, a spring plate, a spring holder and at least one spring, a cartridge, wherein the cartridge forms a function unit by means of which the function of the valve is defined, wherein the cartridge preferably contains an interior housing, a fastening means, a poppet and a diaphragm, wherein the diaphragm serves for dividing the housing into a medium-free and a medium-flowing area, wherein the cartridge is pre-fitted as a function unit and is disposed replaceably as a complete unit in the housing. | 06-09-2016 |
| 137543190 | Cage-type guide for stemless valves | 3 |
| 20080223460 | POPPET CHECK VALVE FOR HIGH PRESSURE OIL PUMP - A poppet valve assembly ( | 09-18-2008 |
| 20140137957 | PRESSURE BALANCED SPRING LOADED OVERTRAVEL SEALING APPARATUS - An apparatus includes a cage and a main plug disposed in the cage. The main plug is movable between a main plug closed position and a main plug open position. A seal assembly disposed on the main plug, the seal assembly having a seal that is configured to contact the cage when the main plug is in the main plug closed position, and configured to reduce contact with the cage when a pressure differential across the seal is reduced. The apparatus includes a pressure balancing assembly movable between a closed position, an overtravel position and an open position. The pressure balancing assembly is configured to balance the pressure differential across the seal when in the overtravel and open position. | 05-22-2014 |
| 20150308580 | RELIEF VALVE ASSEMBLY WITH ANTI-FROZEN SHIELDING HAT - A relief valve assembly includes a relief valve, a hollow shell disposed on the relief valve so as to form a relieving chamber, and a cap mounted to the hollow shell and closing off a distal end of the relief valve to an external environment. The hollow shell has a distal aperture and a proximal aperture, and the distal end of the relief valve is inserted into the hollow shell through the proximal aperture and protrudes through the distal aperture. The relief valve includes a relief port forming a fluid flow path between a valve chamber of the relief valve and the relieving chamber, and the hollow shell extends past the relief port along a longitudinal axis of the relief valve. The relief valve includes a slide member configured to move in response to an over-pressure condition, and a fluid vents from the valve chamber to the relieving chamber through the relief port. | 10-29-2015 |
