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)
12/1999
12/29/1999CN2356195Y Inflating nozzle
12/29/1999CN1240018A Valve-in-valve body, vent port and method
12/28/1999US6007479 Heart assist system and method
12/28/1999US6007314 Downhole pump with standing valve assembly which guides the ball off-center
12/28/1999US6006786 Valved discharge mechanism for fluid displacement apparatus
12/23/1999WO1999066250A1 Valve with a sealing edge ring
12/22/1999EP0965780A1 Fluid supply valve
12/22/1999EP0965012A1 Valve apparatus and method
12/22/1999CN2355182Y Improved structure of valve body for aerated articles
12/22/1999CN2355181Y Special stop valve for liquid base
12/21/1999US6005480 Tire valve and associated tire pressure sending unit
12/21/1999US6003840 Flow control valve for use with boat water distribution apparatus
12/21/1999US6003622 Drill tube for use in upward rock drilling
12/21/1999US6003295 Spinning box for an open-end spinning machine
12/16/1999WO1999064711A2 Improved backhead and check valve for down-hole drills
12/16/1999WO1999064175A1 Fluid flow apparatus
12/16/1999DE19825124A1 Rückstromsicherung für Abgasanlagen Reverse current protection for exhaust systems
12/16/1999DE19823704A1 Valve fitting especially used in pump for gas or liquid
12/15/1999EP0964209A1 Dessicant for a room
12/15/1999EP0964162A1 Pump consisting of a system of pipes oscillated in order to pump by inertia
12/15/1999EP0964104A2 Blackflow preventer assembly
12/15/1999CN2353985Y Forward-flow closed valve and tap
12/14/1999US6000788 Ink cartridge for ink jet printer
12/14/1999US6000417 Bi-directional magnetically-operated check valve for high-purity applications
12/09/1999WO1999063253A1 Retainer insert for a valve having a floating closure member
12/09/1999WO1999063252A1 High flow valved fitting
12/09/1999DE19926997A1 Relief valve for a vehicle ventilation system and injection molding process in which a rigid housing and flexible flap are molded in a multi-cavity tool whose plates move relative to each other
12/09/1999CA2274265A1 Backflow preventer assembly
12/08/1999EP0962701A2 Back draught safety device for fluegas systems
12/08/1999EP0962657A2 Scroll compressor having suction control valve
12/08/1999EP0962655A2 Piston-type compressor inlet valve
12/08/1999CN2352771Y Water sealing valve
12/07/1999US5996631 Check valve
12/02/1999WO1999061872A1 Compound water meter
12/02/1999DE19823310A1 Verbundwasserzähler Composite water meter
12/01/1999EP0961062A1 Piezoelectric valve
12/01/1999CN2351632Y PTEF (Polytetrafluoroethylene) spool type single-flow valve
12/01/1999CN2351631Y Large-flow ball-shape electromagnetic valve
12/01/1999CN2351630Y Non-leakage one-way valve
12/01/1999CN1236872A Onflow controlled spherical backpressure valve
12/01/1999CN1236871A Dual-axle hydraulic butterfly check valve closed slowly
11/1999
11/30/1999US5993149 Variable area compensation valve
11/30/1999US5992462 Disc type check valve
11/30/1999CA2111016C Fluid check valve with replaceable valve seat and flapper assembly
11/24/1999EP0959246A2 Air conditioning reed valve support seat
11/24/1999EP0958947A2 Improvements in or relating to snap-in tyre valves
11/24/1999CN1046800C 流体止回阀 Fluid valve
11/24/1999CN1046799C Compound action type non-water hammering check valve device
11/23/1999US5988217 Shutoff-opening device
11/17/1999EP0955838A1 Safety valve for an inverted liquid-filled canister
11/17/1999CN2349422Y Magnetic-controlled check valve
11/17/1999CN2349414Y Check valve for electric-heating water-boiling bottle
11/16/1999US5983920 Combination pump head with slotted camming device
11/16/1999CA2000500C Flexible closing member, especially heart valve, and method of producing the same
11/15/1999CA2272210A1 Dessiccation chamber
11/11/1999WO1999056850A1 Chelate-forming filter, process for producing the same, and method of purifying liquid with the filter
11/11/1999WO1999056816A1 Valve for drainage of left ventricle
11/11/1999DE19819604A1 Dosing plug valve suitable for petrochemical plant
11/10/1999EP0955491A1 Universal valve
11/10/1999EP0955463A2 Normally unseated suction valve
11/10/1999CN2348210Y Dual-purpose water purifying tap
11/10/1999CN2348209Y Ball check valve
11/09/1999US5979497 Check valve
11/04/1999DE19919026A1 Pressure-release valve
11/04/1999DE19818521A1 Connecting device to connect heat recovery apparatus to flue
11/03/1999EP0665395B1 Valve assembly
11/03/1999CN2347003Y Bicycle valve inside with locking piece
11/03/1999CN2347002Y Two-way pipe cleaner check valve
11/03/1999CN2347001Y Fast pipeline connection assembly
11/03/1999CN2347000Y Plastic ball check with once-shaped valve body
11/03/1999CN2346999Y Multifunctional spherical check valve
11/03/1999CN2346998Y 止回阀 Check
11/03/1999CN2346997Y 止回阀 Check
11/02/1999US5975130 Check valve with a low inertia moving part for low or high pressure differentials
10/1999
10/27/1999CN2345804Y Pneumatic tyre valve
10/27/1999CN2345803Y Diaphragm no-leakage discharge valve
10/27/1999CN2345802Y Double-wedge semisphere ball valve
10/27/1999CN2345801Y Hydraulic slowly close butterfly stop valve
10/27/1999CN2345793Y Globe stop valve
10/27/1999CN1233318A An inflation valve for sacks, bags or the like containers
10/26/1999US5971024 Method and apparatus for controlling fluid flow
10/26/1999US5971022 Selector valve with counterflow prevention means
10/26/1999US5971015 Check valve
10/26/1999US5971003 Apparatus to service gas meters
10/21/1999WO1999052731A1 Non-return valve for fuel tank
10/20/1999EP0819028B1 Airless paint sprayer outlet check valve
10/20/1999CN2344617Y Pressure release valve capable of quickly coupling with liquified gas
10/20/1999CN2344616Y Improved counter-clamping non-return valve
10/20/1999CN2344615Y Hardened sealing ball valve
10/20/1999CN2344614Y 自动排气阀 Auto exhaust valve
10/20/1999CN2344613Y Air-passed type non-return valve
10/20/1999CN1045816C Linear mode check valve
10/19/1999US5967180 Check valve
10/19/1999US5967179 Low profile discharge check valve
10/19/1999US5967178 Flow-controlled one-way valve
10/14/1999WO1999051899A1 Self-inflating cushion and valve therefor
10/14/1999WO1999051823A1 Frost protection device
10/14/1999DE19816398A1 Two-way valve, for use in e.g., medicine
10/13/1999EP0948282A1 Suction device accessory, e.g. for damp surface cleaning
10/13/1999CN2343441Y Pressure valve for cleaner
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