Patents
Sitemap › F16 - Engineering elements or units; General measures for producing and maintaining effective functioning of machines or installations; Thermal insulation in general › F16K - Valves; Taps; Cocks; Actuating-floats; Devices for venting or aerating › F16K 15 - Check valves
Patents for F16K 15 - Check valves (18,131)
12/2003
12/10/2003CN2591356Y Domestic kitchen smoke-returning prevention apparatus
12/10/2003CN1460804A Leaf valve
12/09/2003US6659711 Methods and apparatus for regulating turbine cooling airflow supply systems
12/09/2003US6659426 Charge valve in a high pressure air conditioning system
12/09/2003US6659126 Backflow preventor with adjustable outflow direction
12/04/2003WO2003100304A1 Valve for safety tire, tube for safety tire with double structure, and assembled body of safety tire and rim
12/04/2003WO2003100303A2 Flow measurement and control system for positive displacement pumps
12/04/2003US20030223882 Flow measurement and control system for positive displacement pumps
12/04/2003US20030221729 Valve assembly and pulsator device constructed therewith
12/04/2003US20030221728 Modular pressure relief valve
12/04/2003US20030221723 Surge check unit for a liquid distribution system
12/04/2003DE20211042U1 Plättchen-Rückschlagventil Wafer check valve
12/03/2003CN1129727C Piezoelectric valve
11/2003
11/27/2003WO2003097949A1 Toilet installations
11/27/2003WO2003097286A2 Self-sealing one-piece vacuum fitting for bagging of composite materials
11/26/2003EP1365150A1 Variable displacement type swash plate clutch-less compressor
11/26/2003EP1364833A1 Air bag inflation/deflation system
11/26/2003CN2588152Y Valve core device for bicycle tyre
11/26/2003CN2588151Y Single-in, single-out three-hole check valve
11/25/2003US6651956 Slit-type swabable valve
11/25/2003US6651955 Elastomeric valve, and methods
11/25/2003US6651693 Check valve
11/25/2003US6651689 Valve stem assembly for a pneumatic tire
11/25/2003US6651658 Portable oxygen concentration system and method of using the same
11/20/2003WO2003095877A1 Reed valve assembly
11/20/2003WO2003095835A1 Compressor
11/20/2003WO2002022492A8 Microelectromechanical flexible membrane electrostatic valve device and related fabrication methods
11/20/2003US20030213522 Valve flange connection
11/20/2003US20030213518 Air bag inflation/ deflation system
11/20/2003US20030213479 PCV valve guide
11/20/2003CA2425571A1 Air bag inflation/deflation system
11/19/2003CN2586854Y Micro-resistance water control valve
11/19/2003CN1128303C Water hammer-preventing ball non-return valve
11/18/2003US6648028 Safety device for liquid aerating apparatus
11/18/2003US6648013 Check valve having variable opening-force threshold
11/18/2003US6648012 Non-return valve override device
11/18/2003US6648011 Vacuum demand valve
11/18/2003US6648010 Check valve plate with anti-pressure surge device
11/18/2003US6648005 Activation pin
11/18/2003US6648004 Air valve for inflatable article
11/18/2003US6648003 Backflow preventer
11/13/2003WO2003093709A1 Self-sealing valve with electromechanical device for actuating the valve
11/13/2003WO2003092817A1 Portable oxygen concentration system
11/13/2003WO2003050491A3 Low pressure measurement devices in high pressure environments
11/13/2003US20030209275 Reed valve assembly
11/13/2003US20030209273 Spring-loaded oil overflow valve for diaphragm compressors
11/13/2003US20030209269 Reset tool for a gas fuel tank and method for using the same
11/13/2003DE20210540U1 One-way fuel overpressure and check valve assembly has check valve with small nominal width ratio and connected in parallel to overpressure valve
11/12/2003EP1361381A2 High pressure valve
11/12/2003EP1360418A1 Gas lift valve with central body ventury for controlling the flow of injection gas in oil wells producing by continuous gas lift
11/12/2003EP1359978A2 Methods and devices for use in performing pulmonary procedures
11/12/2003CN1127636C Water-hammerless check valve device
11/06/2003WO2003090843A1 Disposable, sterile fluid transfer device
11/06/2003WO2003090842A1 A valve
11/06/2003WO2003044289B1 Device for preventing the reverse flow of washing, showering or bath water into the fresh water line system
11/06/2003WO2003021139B1 Pressure-activated flexible valve
11/06/2003US20030205276 Modular two way check valve construction
11/06/2003US20030205273 Valve with electromechanical device for actuating the valve
11/06/2003US20030205272 Method of venting fuel vapor from a tank and system therefor
11/06/2003DE20309618U1 Shaftless fluoroplastic non-return flap valve, comprises two parts in solid fluoroplastic, with keyed connection, no other fasteners being required
11/06/2003DE10239622C1 Back-flow prevention valve, for drainage pipe, uses floating ball lifted for closing valve seat adjacent bottom end of drainage pipe
11/05/2003EP1359043A2 Siphonable check valve and method of making same
11/05/2003EP1359042A1 Method of venting fuel vapor from a tank and system therefor
11/05/2003EP0990099B1 Fluid-activatable shut-off valve
11/05/2003CN2584981Y Lifting slowly closed check valve
11/05/2003CN2584980Y Special check valve for oil field
11/05/2003CN2584967Y Stop, check two-use valve
11/04/2003US6640831 Valve for a fuel delivery unit
11/04/2003CA2131690C Backflow preventor with adjustable outflow direction
11/02/2003CA2426617A1 Method of venting fuel vapor from a tank and system therefor
10/2003
10/30/2003WO2003089822A1 Closure device with self-aligning poppet
10/30/2003WO2003064907B1 Slit-type swabable valve
10/30/2003US20030201023 Over-molded check valves for fluid delivery systems
10/30/2003US20030201014 Siphonable check valve and method of making same
10/30/2003US20030201013 Waterproof valve of exhausting tube
10/30/2003US20030201012 Check valve device
10/30/2003DE20209841U1 Squeeze valve, in particular, valve openable by biting on it, for drinking systems comprises a spring and a valve plug which are produced as a single plastic component
10/30/2003DE10212136C1 Spülventil Flush valve
10/30/2003CA2426433A1 Siphonable check valve and method of making same
10/29/2003CN2583465Y Superhigh temp. electromagnetic valve
10/29/2003CN1452702A Valve union with water saving function
10/28/2003US6638038 Shoe with inflatable bladder and secure deflation valve
10/23/2003US20030196704 Structure for fixing check valve
10/23/2003US20030196703 Closure device with self-aligning poppet
10/23/2003DE20312660U1 Back pressure and volume regulating device, in particular suitable for air conditioning or heating system
10/22/2003CN1450290A Check valve and mfg method thereof
10/22/2003CN1450266A Cylinder assembly of hermetic compressor
10/21/2003US6634384 One-way valve for use with vacuum pump
10/21/2003US6634376 Back flow preventing eductor
10/21/2003US6634312 One-way self-closing drain plug apparatus
10/16/2003US20030194337 Cylinder assembly of hermetic compressor
10/16/2003US20030192590 Valve stem adaptor
10/16/2003US20030192551 Methods and devices for use in performing pulmonary procedures
10/16/2003US20030192550 Methods and devices for use in performing pulmonary procedures
10/15/2003CN2580246Y Film type check valve
10/15/2003CN2580245Y Main flow guide type check valve
10/15/2003CN2580244Y Check value of air exhaust conduit
10/15/2003CN2580243Y Water hammer arresting check valve
10/15/2003CN1448650A Valve arrangement for a back flow preventer
10/14/2003US6631729 Valve connector
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