| Patents for F16K 15 - Check valves (18,131) |
|---|
| 01/16/1991 | CN2069516U Pressure differential force self-sealed inner tube valve inside |
| 01/15/1991 | US4984361 Method of making a flat spring compressor valve |
| 01/15/1991 | CA1278977C Swing check valve disc |
| 01/15/1991 | CA1278976C Swing check valve |
| 01/15/1991 | CA1278975C Vacuum-breaking valve for pressurized fluid lines |
| 01/10/1991 | WO1991000458A1 Butterfly valve method and apparatus employing variably positionable pivot shaft |
| 01/10/1991 | WO1991000457A1 Balanced-torque butterfly valve |
| 01/10/1991 | WO1991000456A1 Butterfly valve method and apparatus |
| 01/10/1991 | WO1991000455A1 Butterfly valve method and apparatus |
| 01/10/1991 | WO1991000454A1 Butterfly valve method and apparatus |
| 01/10/1991 | WO1991000453A1 Butterfly valve with intra-shaft actuator means |
| 01/10/1991 | WO1991000452A1 Butterfly valves with actuators carried on valve plate |
| 01/10/1991 | WO1991000451A1 Butterfly valve apparatus and method |
| 01/10/1991 | WO1991000450A1 Butterfly valve apparatus and method |
| 01/10/1991 | WO1991000449A1 Butterfly valve apparatus and method |
| 01/10/1991 | WO1991000117A1 Aerosol holding chamber |
| 01/10/1991 | DE3920893A1 Magnetic valve for heating medium flow of vehicle - provides linear flow with valve and seat supported at housing across pressure spring |
| 01/09/1991 | EP0406936A1 One-way diaphragm valve with controlled central lift |
| 01/08/1991 | US4982759 Swing check valve with secured cage |
| 01/02/1991 | CN2068628U Disk check valve |
| 01/01/1991 | US4981157 Shut off valve |
| 01/01/1991 | US4981154 Fluid flow control device |
| 12/31/1990 | WO1991000463A1 Butterfly-type check valve |
| 12/31/1990 | WO1991000459A1 Flight craft with fluid systems which incorporate butterfly valves, and butterfly valve methods and apparatus |
| 12/31/1990 | CA2060311A1 Flight craft with fluid systems which incorporate butterfly valves, and butterfly valve methods and apparatus |
| 12/31/1990 | CA2058629A1 Butterfly-type check valve |
| 12/26/1990 | CN2068095U Oil filler, drain valve for high-voltage electric equipment |
| 12/20/1990 | DE3925222A1 Pressure control for door closing mechanism - makes use of piston-actuated check valve system |
| 12/19/1990 | CN2067782U Butt-clamping rotation one-way valve |
| 12/19/1990 | CN1010874B Liquid gas cylinder valve device |
| 12/18/1990 | US4978285 Reed valve for hermetic compressor |
| 12/18/1990 | US4977927 Free flow fitting |
| 12/18/1990 | US4977926 Check valve |
| 12/18/1990 | US4977924 Swing check valve with secured cage |
| 12/08/1990 | WO1990015276A1 A valve unit for a reciprocating compressor for refrigerators and the like |
| 12/08/1990 | CA2033166A1 Valve unit for a reciprocating compressor for refrigerators and the like |
| 12/05/1990 | CN2066923U Dust-proof check valve needle |
| 12/05/1990 | CN2066922U Non-dischargable tyre check velve for tricycle |
| 12/04/1990 | US4974628 Check valve cartridges with controlled pressure sealing |
| 12/04/1990 | US4974586 Breathing mask |
| 12/04/1990 | CA1277202C Self-regulating valve |
| 12/04/1990 | CA1277162C2 Irrigation appliance |
| 12/04/1990 | CA1277161C2 Irrigation appliance |
| 12/04/1990 | CA1277160C Irrigation appliance |
| 11/29/1990 | WO1990014540A1 Ball check valve for conduits |
| 11/29/1990 | WO1990014536A1 Valve for connection to a pressurized water main |
| 11/29/1990 | WO1990014244A1 Fuel filler pipe seal |
| 11/29/1990 | DE3916884A1 Kugelrueckschlagventil fuer rohrleitungen Kugelrueckschlagventil for pipelines |
| 11/29/1990 | DE3916639A1 Combination valve esp. for braking unit with large vacuum requirement - is operated by solenoid in electronic circuit e.g. antilocking system of motor vehicle |
| 11/28/1990 | EP0399443A1 Flapper check valve |
| 11/26/1990 | CA2017087A1 Ball-type check valve |
| 11/20/1990 | US4971103 Swing check valve with secured cage |
| 11/20/1990 | US4971093 Check valve |
| 11/20/1990 | CA1276524C Sewer check valve with cutting seat |
| 11/14/1990 | EP0396532A1 Accessory for pneumatic bicycle tire valves |
| 11/14/1990 | CN2065708U One-way valve |
| 11/13/1990 | US4969484 Reversible flow check valve |
| 11/07/1990 | EP0395903A1 Valve test plug |
| 11/06/1990 | US4967997 Butterfly valve with intra-shaft actuator means |
| 11/06/1990 | US4967791 Pressure activated check valve |
| 11/06/1990 | US4967790 For pressurized service |
| 11/06/1990 | US4967778 Butterfly valve apparatus and method |
| 10/31/1990 | EP0394612A2 Pressure activated check valve |
| 10/31/1990 | CN2064850U Air valve |
| 10/31/1990 | CN2064849U Multifunctional single pass valve |
| 10/30/1990 | US4966535 Non-return valve for admitting a liquid to be sprayed into a pump chamber, and utilization thereof |
| 10/30/1990 | US4966199 Diaphragm-type center flow check valve |
| 10/30/1990 | US4966197 One-way valve |
| 10/30/1990 | US4966185 Inflatable body with a valve and a packaging with such a body |
| 10/30/1990 | US4966182 Method and apparatus for de-gelling a liquid mixture |
| 10/24/1990 | EP0393594A2 Inflation valve, especially for inflatable articles |
| 10/24/1990 | EP0375754A4 Backflow prevention valve |
| 10/24/1990 | CN1010118B Adjustable differential flow shuttle valve |
| 10/23/1990 | US4964852 Douche container and nozzle with intermediate one-way valve |
| 10/23/1990 | US4964423 Check valve |
| 10/23/1990 | US4964422 Butterfly-type check valve |
| 10/10/1990 | EP0390881A1 Delivery valve. |
| 10/10/1990 | CN2063596U Clamped butterfly check valve |
| 10/04/1990 | WO1990011465A1 Check valve |
| 09/26/1990 | EP0389022A1 Irrigation appliance |
| 09/26/1990 | EP0388828A1 Single-acting valve for fluids |
| 09/26/1990 | CN2062775U Inflating valve for tyre |
| 09/25/1990 | US4958661 Check valve |
| 09/25/1990 | US4958633 Valve for respirator |
| 09/25/1990 | CA1274446A1 Check valve |
| 09/13/1990 | DE4007371A1 Outlet valve for rotary piston compressor |
| 09/12/1990 | EP0386381A1 Fluid flow control device with at least one check valve |
| 09/12/1990 | EP0386191A1 Device for connecting at least two supply pipes with a common drainage pipe. |
| 09/12/1990 | EP0386183A1 One way flow valve |
| 09/11/1990 | US4955512 Liquid container and dispenser for controlled liquid dispensation |
| 09/11/1990 | US4955461 Valve system for preventing uncontrolled descent in fork lift trucks |
| 09/11/1990 | US4955407 Check valve insertable into a hose |
| 09/05/1990 | CN2061634U Inproved valve of bicycle tyre |
| 09/04/1990 | US4953588 Dual check valve |
| 09/04/1990 | US4953584 For preventing backflow and siphoning |
| 08/29/1990 | EP0384423A1 Hot water accumulator with a heat exchanger for sanitary water as well as an exterior heating element and a distributor for the inflowing water |
| 08/29/1990 | EP0384152A1 Air drier for compressed-air brake systems |
| 08/29/1990 | CN2061236U Labour-saving valve inside |
| 08/29/1990 | CN2061235U Casing-pipe back-pressure valve for automatic grouting |
| 08/29/1990 | CN1009385B Oil-discharging line air-liquid control valve for automobile fuelling station and its usage method |