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)
12/1977
12/27/1977US4064896 Vacuum breakers
12/20/1977US4063570 Backflow check valve
12/13/1977US4062378 Easily disassembled, one-way check valve
11/1977
11/22/1977US4059127 Self-cleaning non-return drainage valve
11/15/1977US4058138 Straightway valve
10/1977
10/18/1977US4054153 Check valve
10/18/1977US4054152 Check valve
09/1977
09/20/1977US4049015 Check valve assembly
09/06/1977US4046164 Lift check valve with dashpot
09/06/1977US4046163 Relief valve
09/06/1977US4046011 One-way valve for fluid sampler device
08/1977
08/23/1977US4043358 Flapper check valve
08/09/1977US4040441 Check valve assembly
08/09/1977US4040404 Fuel tank pressure-vacuum relief valve
08/02/1977US4039004 Backflow valve mounting and sealing device
08/02/1977US4039003 Drop check valve
08/02/1977US4039002 Gas compressor valve
08/02/1977US4038983 Fluid infusion pump
07/1977
07/19/1977US4036252 Full bore pipeline valve apparatus
07/19/1977US4036251 Fluid compressor valve
07/12/1977US4034780 Check valve
07/05/1977US4033375 Two-way fluid pressure relief valve
06/1977
06/28/1977US4031917 Constant flow gas regulator
06/28/1977US4031915 Irrigation system flushing valve
06/21/1977US4030520 Ball-type safety valve
06/14/1977US4029290 In service exercisable tilt disc check valve
06/07/1977US4027853 Valve plate having improved suction gas flow path
06/07/1977US4027696 Check valve
06/07/1977US4027695 Check valve
05/1977
05/31/1977US4026322 Reciprocating pump check valve assembly
05/31/1977US4026318 Valve for giant tires
05/24/1977US4024889 Dynamic control valve for modifying fluid flow
05/17/1977US4023591 Valve of particulated material for vertical forced air channel
05/10/1977US4022245 Sight check valve
05/10/1977US4022244 Irrigation purge valve
05/10/1977US4022113 Flow control valve
05/03/1977US4020828 Pressure relief valve apparatus and method
04/1977
04/26/1977US4019532 Flap valve
04/26/1977US4019527 Modulating flow control valve
04/19/1977US4018247 Springless ball valve for high speed compressors
04/12/1977US4016906 Anti-leak fuel pumps for vehicles
04/12/1977US4016900 Springless valve for pneumatic tires and the like
04/05/1977US4015624 Tire valve
04/05/1977US4015623 Tire valve with pressure release means
04/05/1977US4015622 Valve for use with inflatable articles such as pneumatic boats
03/1977
03/29/1977US4014048 Inflation device
03/22/1977US4013089 Back flow preventer valve
03/22/1977US4013088 Valve structure
03/01/1977US4009572 Hydrostat systems containing coaxial multidirectional flow control valves
02/1977
02/22/1977US4009366 Thermal pulse type heater and valve therefore
02/22/1977US4008878 Gas control valve for gas shielded electric welding torches
02/15/1977US4007758 Respirator pressure-demand exhalation valve
02/01/1977US4005732 Flapper valve with independent spring action
02/01/1977US4005710 Parenteral apparatus with one-way valve
01/1977
01/25/1977US4004614 Tether for captive plug of inflation device
01/25/1977US4004533 Scuttling valve
01/18/1977US4003399 Anti-syphon device for a water supply line
01/18/1977US4003398 Pressure limiter device
01/18/1977US4003397 Dual coaxial bidirectional valves and filter assemblies and hydrostat systems containing the same
12/1976
12/21/1976US3998571 Valve retainer
12/21/1976US3998243 Flapper valve for a rotary compressor
12/14/1976US3996962 Backflow preventer and relief valve assembly
12/14/1976US3996957 Inflator valve with pressure gauge and safety regulator
12/07/1976US3996137 Filter assemblies containing coaxial bidirectional flow control and relief valves
12/07/1976US3995658 Non-return valve
12/07/1976US3995653 Inflation device
11/1976
11/30/1976US3994539 Self-contained activated slide apparatus and methods of constructing and utilizing same
11/30/1976US3994312 Inflation pressure regulator
11/23/1976US3993093 Non-return valve
11/09/1976US3990472 Check valve
11/09/1976US3990471 Flap valve
11/09/1976US3990467 Combined valve stem and pressure gauge
11/09/1976US3990439 Protective breathing apparatus and valve therefor
11/02/1976US3989419 Valve guide for poppet valve
10/1976
10/12/1976US3985652 Dual coaxial bidirectional valves and filter assemblies and hydrostat systems containing the same
10/05/1976US3983907 Valve device, especially for air cushions
10/05/1976US3983900 Reed valves formed of high modulus fiber reinforced resin
10/05/1976US3983899 Check valve
09/1976
09/28/1976US3982561 Combination surge relief and back flow prevention valve
09/21/1976US3981479 Check valve
09/07/1976US3978886 Backflow safety valve for therapy pools
09/07/1976US3978885 Unbalance pressure actuator for a flow control apparatus having noise and vibration reducing arrangement thereon
09/07/1976US3978878 Resilient supply and exhaust valve
08/1976
08/24/1976US3976280 Animal-actuated watering valve
08/17/1976US3974855 Check valve having self energizing seal
08/17/1976US3974848 Three pot two way check valve
08/10/1976US3973588 Air outlet valve for diving apparatus
08/03/1976US3972504 Main steam isolation check valve
07/1976
07/27/1976US3971407 Means for locating suction valve
07/20/1976US3970106 Collapsible ball valve
07/13/1976US3968925 Anti-reflux valve
07/13/1976US3968897 Pressure-vacuum relief valve assembly
07/06/1976US3967645 Check valve for urine collection device
07/06/1976US3967639 Tire valve core
06/1976
06/29/1976US3965930 Check valve assembly
06/29/1976US3965929 Conduit valve
06/29/1976US3965926 Flapper valve with independent plate suspension
06/29/1976US3965916 Apparatus and method for gagging a relief valve within a flue secured to a tank
06/22/1976US3964510 Live well valve
06/22/1976US3964509 Check valve
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