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Class 137/512 - Plural


Subclass of Class 137 - Fluid handling
Definition: Apparatus including more than one valve of the type.
No. of applications: 61
Last issue date: 05/24/2012


1    
Application No.Application TitleIssue Date
20120128533LIQUID SUPPLY DEVICE USING CHECK VALVE AND REACTIVE LIQUID CHROMATOGRAPHY SYSTEM
It is possible to correctly determine whether a change in the pressure or flow rate is caused by normal opening and closing operations of a check valve and to monitor in real time whether an operation of a check valve is normal or abnormal in a liquid supply device. Lig...
05/24/2012
20120103438One-handle Type Faucet having a double anti-reverse function to prevent waste materials from flowing backward into the faucet when disaster happens
A faucet includes a faucet body provided with a receiving chamber, a first outlet port and a second outlet port, a first check valve mounted in the receiving chamber of the faucet body and located between the first outlet port and the second outlet port of the faucet bo...
05/03/2012
20120018013APPARATUS AND METHODS TO DISPENSE FLUID FROM A BANK OF CONTAINERS AND TO REFILL SAME
An example dual check valve device described herein includes a housing and a first check valve in the housing. A second check valve is located in the housing adjacent the first check valve and in substantial axial alignment with the first check valve....
01/26/2012
20120006428VALVE ASSEMBLY
A valve assembly comprising mutually opposed first and second valves (10), each of which comprises a casing (12) in which a through passage (14) is defined, the through passages having, at contiguous ends, internally circumferential valve seats (...
01/12/2012
20110226357FLUSH VALVE ANTI-BACKFLOW CARTRIDGE
A flush valve has a valve body having an inlet and an outlet, a piston disposed in the valve body between the inlet and the outlet, a cartridge disposed in the outlet and a plurality of check valves disposed serially within the cartridge for preventing backflow through ...
09/22/2011
20110219751FUEL DELIVERY SYSTEM FOR SELECTIVELY PROVIDING FUEL TO VARIOUS ENGINE COMPONENTS
A system for providing fuel to an engine fuel delivery system and to an exhaust aftertreatment system associated with an engine. The system includes a fuel source, a pump being operable in a first state to pump fuel from the fuel source to the engine fuel delivery syste...
09/15/2011
20110146805Flow control device and flow control method
A water flow control device (27) that may, for example, deliver water to a domestic dwelling (10). The device (27) includes a plurality of valves, which may include three valves (12, 13, 14). The valves (12, 13) are connected to an out...
06/23/2011
20110126923Valve Assembly
A valve assembly for a liquid storage tank, the storage tank having a wall, the assembly comprising: a pressure relief conduit; a gas inlet valve device having a gas inlet aperture through which gas may pass into the tank; and a gas outlet valve device having a gas outl...
06/02/2011
20110126922DEVICE FOR PRODUCING AND PROVIDING A VACUUM, AND VENTILATION VALVE
The invention relates to a device for producing and providing a vacuum for a vacuum consumer, having a vacuum source, having a suction valve, having a non-return valve arranged between the vacuum consumer and the suction valve, and having a ventilation valve, the contro...
06/02/2011
20110083750METHOD FOR OPERATING A HYDRAULIC ACTUATION POWER SYSTEM EXPERIENCING PRESSURE SENSOR FAULTS
A method for operating a hydraulic actuation system during a pressure sensor malfunction is provided. The hydraulic actuation system includes a pump, a reservoir, a first work-port and a second work-port, a valve system with individual orifices, a pressure sensor system...
04/14/2011
20110033313Air Flow Control Apparatus
An apparatus includes a valve housing having an inlet port, a first chamber with a first outlet port, and a second chamber with a second outlet port. A first valve opens between the inlet port and the first chamber under a first level of pneumatic pressure at the inlet ...
02/10/2011
20110028853CHECK VALVE STRUCTURE, DIAPHRAGM PUMP, AND SPHYGMOMANOMETER
A check valve structure has a first space and a second space. The check valve structure is configured to allow a flow of a fluid from the first space to the second space and to inhibit flow of the fluid from the second space to the first space. The check valve structure...
02/03/2011
20110017313DEVICE AND METHOD FOR ASEPTIC PRESSURE RELIEF
The invention relates to an overpressure safety device (1) for pipeline networks, comprising an inlet pipe leading from the pipeline network to be secured to the overpressure safety device (1), at least one safety valve, and a discharge pipe. According to ...
01/27/2011
20100243061PRESSURE REGULATOR VALVE
A pressure regulator valve arrangement comprises first (14) and second (24) regulator valves for closing a fluid passage (4) in the event of over-pressure. The valve members each have pressure ports for sensing the pressure, the ports being located ...
09/30/2010
20100243082Liquid isotope delivery system
A liquid isotope delivery system includes a pressure-controlling unit, an input unit, a target chamber, a proton-radiating unit and a storage unit. The pressure-controlling unit includes a first regulating valve, a second regulating valve connected to the first regulati...
09/30/2010
20100243065VALVE ASSEMBLIES AND RELATED SYSTEMS AND METHODS
Check valve assemblies and related methods are described. A valve assembly comprises a housing having at least a first inlet passage and an outlet passage. A flow channel is disposed within the housing, with at least a portion thereof extending inward from the first inl...
09/30/2010
20100186366System and Method for Water Injection in a Turbine Engine
In one embodiment, a system includes a water injection system configured to supply water from a pressure regulating valve to a water manifold of a turbine engine. The system also includes a drain valve configured to drain at least a portion of the water from the pressur...
07/29/2010
20100163121VALVE CONTROL UNIT OF TANK LORRY
Disclosed therein is a valve control apparatus for a tank lorry. The valve control apparatus for the tank lorry includes a first control valve for opening and closing the oil feed valve by supplying compressed air to the oil feed valve or discharging the supplied compre...
07/01/2010
20100163120METHODS, APPARATUS AND/OR SYSTEMS RELATING TO CONTROLLING FLOW THROUGH CONCENTRIC PASSAGES
An annular dual-flow check valve for controlling the flow through concentric channels that have a common outlet, comprising: an outer body and an inner body that define the concentric channels, which include an outer channel and an inner channel formed therein; a spring...
07/01/2010
20100155408TANK VENTILATION SYSTEM
A tank ventilation system for a motor vehicle has a fuel tank (4) and a pressure holding valve device (20) that function to maintain a slight positive pressure in the fuel tank (4) above fuel (8) in the fuel tank (4) by discharging an ...
06/24/2010
20100147401Sprinkler With Pressure Regulation
A sprinkler pressure regulator module has a compact arrangement with a shiftable member having an upper cavity for receiving water flow debris, and a portion of a bypass valve may reciprocate therein. The module includes a stator plate directing water into a drive mecha...
06/17/2010
20100139625VEHICLE FUEL SYSTEM AND COMPONENTS THEREOF
A fuel vapor control valve comprising a housing. The housing comprising inlet and outlet ports in flow communication via first and second valve controlled passages. The first valve controlled passage being configured to admit fuel vapor flow in a direction from the inle...
06/10/2010
20100139786Multi-Protection Valve
An object of the present invention is to allow a vehicle to run in the case where an air compressor connected to an input port fails so as to cause air leakage from the location of the failure, by preventing air in a parking brake circuit from leaking from the failure l...
06/10/2010
20100037615MULTI-STAGE CHECK VALVE
A multi-stage check valve includes a valve housing defining an internal valve chamber. A main valve member within the valve chamber of the valve housing has an internal valve chamber. In the first position thereof the main valve member blocks fuel below a predetermined ...
02/18/2010
20100032027Backflow preventer
A first check valve has a narrow flow path portion (68) formed between an arcuate portion (46) of the outer periphery (45) of a support member and a second enlarged-diameter portion (11) of a casing. The narrow flow path portion (first portio...
02/11/2010
20100024889Unidirectional Flow Device and Methods of Use
In some embodiments, apparatus for allowing one-way flow of fluid into or out of a tubular member includes a base pipe having at least one port formed therein. At least one valve is engaged with the base pipe, associated with at least one port and capable, at least temp...
02/04/2010
20100002897PRESSURE REGULATING SYSTEMS FOR EXPANDABLE INSERTION DEVICES
At least one exemplary embodiment is directed to an earpiece comprising: an ambient sound microphone (ASM); an ear canal microphone (ECM); an ear canal receiver (ECR); and an inflatable sealing section, where the sealing section includes at least one pressure valve, whe...
01/07/2010
20100000617CONSTRUCTION EQUIPMENT MACHINE WITH HYDRAULIC PRESSURE CONTROLLED SELECTING SYSTEM
A construction equipment machine has a lower frame and an upper frame rotatably connected, the machine having at least one hydraulic pilot circuit comprising a primary hydraulic pilot line running from the upper frame to the lower frame through a rotary joint for contro...
01/07/2010
20090301583SMALL ENGINE FUEL SYSTEM
A small engine fuel system includes a vent valve configured to be disposed within a tank having at least a portion of a filler pipe defined therein. The filler pipe includes an upper portion configured to receive a fluid and a lower portion located at a predetermined de...
12/10/2009
20090288719TANK PRESSURE AND VACUUM RELIEF DEVICE
Particular embodiments of the present invention include devices and methods for relieving excess pressure or vacuum pressure from a tank interior. An embodiment of a pressure relief device includes a housing having an opening associated with a first end, an opening asso...
11/26/2009
20090242046Valve module
A system for pressurizing and exhausting a vented chamber is disclosed. The present disclosure includes a unitary module having two integrated valves for each supported chamber, a single inlet port for each chamber, a single vent exhaust port and a single pressurized po...
10/01/2009
20090235993FLOW RATE CONTROL DEVICE
A flow rate control device comprises a regulator that adjusts the pressure of a fluid to be supplied, a plurality of narrowed pathways arranged in parallel on the downstream side of the regulator, and an open/close section that switches a predetermined narrowed pathway ...
09/24/2009
20090147474APPARATUS FOR PREVENTING REFLUENCE OF AIR IN AN ELECTRONIC DEVICE
An apparatus including a base plate, and a plurality of diaphragms is provided for preventing refluence of air in an electronic device. Each diaphragm includes a hollow main body, and a plurality of movable petaline portions extending out from an end of the main body. D...
06/11/2009
20090139585INTEGRATED AIR TANK
An integrated air tank (10) for an air supply system of a vehicle brake system includes a tank housing (12) subdivided into at least three portions with a first separator wall (24) and a second separator wall (26). The at least three portions...
06/04/2009
20090114292Valve assembly
Although modern diesel fuel formulations are intended to reduce emissions of diesel engines, at least some of those modern fuels tend to have relatively low lubricity levels. The control valve assemblies described herein help to minimize any increased wear that would ot...
05/07/2009
20090078111DOUBLE CHECK VALVE HAVING FLOATING FUNCTION
A double check valve having a floating function is disclosed, which can prevent construction equipment from overturning through intercepting of a floating function even if a signal pressure is fed to the double check valve to perform the floating function in a state tha...
03/26/2009
20090050216VALVE SYSTEMS FOR USE WITH A FLUID INJECTOR SYSTEM
A valve system for use in a system including a first source of a first pressurized fluid and a second source of a second pressurized fluid includes a valve housing including a first inlet port adapted to be placed in fluid connection with the first source, a second inle...
02/26/2009
20090053077FLOW PRIORITIZING VALVE SYSTEM
A flow prioritizing system includes a regulating valve and a flow prioritizing valve. The regulating valve receives a first portion of the fluid supplied from a fuel supply pump, and is responsive to a control pressure to selectively allow or prohibit flow to secondary ...
02/26/2009
20090038693COMBINATION RELIEF VALVE AND INJECTION FITTING
A valve for regulating the flow of fluid through an access port in a fluid chamber includes a body having a first end and a second end, the second end being located in the access port and the first end protruding outside of the access port. An axial bore extends from th...
02/12/2009
20080251141BACKFLOW PREVENTION FOR HIGH PRESSURE GRADIENT SYSTEMS
Gradient performance with high pressure gradient solvent delivery system is optimized by approximation of infinite stroke volume of high pressure pumps by the addition of pulse dampening with backflow prevention to each high pressure pump. The backflow prevention adds s...
10/16/2008
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