| Patents for F16K 15 - Check valves (18,131) |
|---|
| 07/12/1988 | CA1239072A1 Self-sealing check valve |
| 07/06/1988 | CN87213674U Duct check-valve |
| 06/29/1988 | CN87212131U Non-sound vertical check valve |
| 06/29/1988 | CN87208182U Bicycle valve |
| 06/28/1988 | US4753267 Refrigeration valve |
| 06/22/1988 | EP0271620A2 Manually operable aspirator |
| 06/22/1988 | CN87212201U Leakproof air valve |
| 06/21/1988 | US4751940 Check valve |
| 06/15/1988 | EP0271358A2 Improvements in or relating to non-return valves |
| 06/14/1988 | US4750517 Vacuum check valve |
| 06/14/1988 | US4750516 Vacuum check valve |
| 06/08/1988 | CN86203565U Valve needle used for bicycle and rickshaw |
| 06/07/1988 | US4749542 Removable check valve for use in a nuclear reactor |
| 06/07/1988 | US4749003 Center flow check valve |
| 06/07/1988 | US4748944 Reed valve device for 2-cycle engine |
| 06/01/1988 | CN87202311U Explosion-proof check valve of tyre |
| 05/31/1988 | US4747426 Check valve |
| 05/25/1988 | EP0268520A2 Check valve for a pressure fluid circuit in a combustion engine |
| 05/25/1988 | EP0268339A2 Non-return reed valve for the delivery of fuel into internal combustion engines, with directed flow and maximum adjustable opening, with elastic resistance plates |
| 05/24/1988 | CA1237046A1 Check valve |
| 05/18/1988 | EP0267428A1 Breathing mask |
| 05/18/1988 | CN87201369U Valve pressured valve for compressive spray producer |
| 05/17/1988 | CA1236755A1 Alarm check valve |
| 05/17/1988 | CA1236749A1 Three stage valve |
| 05/11/1988 | EP0266456A1 Respiratory face mask |
| 05/11/1988 | DE3737437A1 Non-return valve |
| 05/10/1988 | CA1236500A1 Seals |
| 05/05/1988 | WO1988003241A1 Check valve testing system |
| 05/04/1988 | CN87104481A Valve and its improvement of automatically assembling method |
| 05/03/1988 | CA1236058A1 Jet divider device for filling heads |
| 05/03/1988 | CA1235978A1 Check valve |
| 04/28/1988 | DE3634455C1 Non-return valve, particularly for the ventilation of passenger compartments of passenger vehicles |
| 04/27/1988 | CN87207508U Valve needle |
| 04/27/1988 | CN86104109A Permanent-magnet one-way valve |
| 04/26/1988 | US4739813 Tubeless tire valve |
| 04/21/1988 | DE3734050A1 Gasflaschenventil Gas cylinder valve |
| 04/20/1988 | EP0263863A1 Valve operating with high reliability. |
| 04/20/1988 | CN87212352U Electric-control one-way valve |
| 04/20/1988 | CN87210631U Buffer non-return valve |
| 04/20/1988 | CN87207159U Sealed valve of tyre |
| 04/20/1988 | CN87106726A Liquid gas cylinder valve device |
| 04/19/1988 | US4738282 Zero leakage valve |
| 04/13/1988 | EP0263308A2 Removable check valve for use in a nuclear reactor |
| 04/13/1988 | CN87202114U Dual-purpose valve of ball check |
| 04/12/1988 | US4736771 Valve assembly for pipeline |
| 04/06/1988 | CN87204447U Self-control throttle check valve |
| 04/05/1988 | US4735607 For removing fluids from the stomach or upper intestine |
| 03/30/1988 | EP0261317A2 Check valve device |
| 03/30/1988 | CN87203946U Improved type inflating nozzle for motorcycle |
| 03/29/1988 | US4733690 Hydraulic valve |
| 03/16/1988 | EP0259854A2 Hydraulic shock absorber for pivoting check valves |
| 03/16/1988 | CN87209107U Plunger type valve inside |
| 03/15/1988 | US4730996 Rotary compressor with two discharge valves having different frequencies |
| 03/08/1988 | US4729401 Aspiration assembly having dual co-axial check valves |
| 03/08/1988 | US4729283 Valve for use with hydraulic ram assemblies |
| 03/02/1988 | EP0257751A2 Vending machine for beverages |
| 03/02/1988 | CN87206249U Safe gas-niddle for balls to fill with and give out gas |
| 03/02/1988 | CN87200068U Gas-fulled valve |
| 03/01/1988 | USH438 Fluid tank sounding tube check valve |
| 03/01/1988 | CA1233394A1 Wafer check valves |
| 02/25/1988 | DE3627865A1 Rueckschlagventil Return valve |
| 02/24/1988 | EP0256621A1 Pressure tapping and isolating valve |
| 02/18/1988 | DE3725869A1 Klappen-absperrorgan Flap shut-off |
| 02/17/1988 | EP0255982A2 Non-return ball valve |
| 02/16/1988 | US4725266 Left ventricle vacuum control and pressure relief valve |
| 02/16/1988 | US4724867 Vacuum check valve |
| 02/16/1988 | CA1232821A1 Non-return valve for pulsating burners |
| 02/10/1988 | CN86208403U One-way needle for inflating ball |
| 02/10/1988 | CN86205164U Series valve slice vertical-oscillated breathing apparatus |
| 02/09/1988 | US4723572 Compressor valve |
| 02/03/1988 | EP0255269A2 Poppet valve |
| 02/03/1988 | CN87201755U Check valve with automatic rotary ball |
| 01/26/1988 | US4721289 Combined check and exhaust valve for high pressure gas spring |
| 01/26/1988 | US4721130 Valve structure of hydraulic buffer |
| 01/20/1988 | EP0253748A2 One piece valve for a closed receptacle, its manufacturing process and means for executing this process |
| 01/20/1988 | EP0253049A2 Scroll compressor |
| 01/20/1988 | CN87205553U Elastic film back pressure valve |
| 01/20/1988 | CN87204815U High-lift automatic one-phase valve |
| 01/13/1988 | EP0252890A1 Valve device |
| 01/12/1988 | CA1231285A1 External female urinary appliance and collection system |
| 01/06/1988 | CN87206606U High efficiency aerated valve |
| 12/31/1987 | CN87208963U Auxiliary tyre valve for motor vehicles |
| 12/31/1987 | CN87202506U Double-purpose water valve with stop and non-return functions |
| 12/29/1987 | US4715393 Fluid dispersing checkvalve |
| 12/23/1987 | EP0249672A2 Irrigation appliance |
| 12/16/1987 | CN86103677A Air isolating valve used for anti-pollution purpose |
| 12/15/1987 | US4712619 Float device for use in a well bore cementing operation |
| 12/15/1987 | US4712580 Exhalation valve assembly |
| 12/15/1987 | US4712574 Vacuum-breaking valve for pressurized fluid lines |
| 12/12/1987 | CN86209676U Valve stem for tyre |
| 12/09/1987 | CN87103004A Adjustable differential flow shuttle valve |
| 12/08/1987 | USRE32553 Exhalation valve assembly |
| 12/08/1987 | US4711224 Check valve in auxiliary vacuum system |
| 12/05/1987 | CN86207790U One-way valve for controlling gas flow in vehicles |
| 12/01/1987 | US4709836 Fluid flow nozzle |
| 12/01/1987 | US4709722 Valve apparatus for crankcase oil drainage |
| 12/01/1987 | US4709552 Multiple cylinder internal combustion engine with exhaust turbochargers |
| 11/24/1987 | US4708606 Valve, particularly for air compressor |
| 11/24/1987 | US4708168 Valved body for hermetic motor-compressors for refrigerant fluids |
| 11/24/1987 | US4708167 Check valve |