Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Engineering
Class Information
Number: 137/614.2
Name: Fluid handling > Systems > Flow path with serial valves and/or closures > Direct response normally closed valve limits direction of flow
Description: Systems in which at least one of the valves is of the check valve type, thereby preventing flow in one direction.










Patents under this class:
1 2 3 4 5 6 7

Patent Number Title Of Patent Date Issued
8689816 Fuel tank vent valve assembly and method of assembly Apr. 8, 2014
8672042 Continuous fluid circulation valve for well drilling Mar. 18, 2014
8662110 Shut-off trim including spring loaded check valve Mar. 4, 2014
8651139 Valve Feb. 18, 2014
8622081 Fluid flow control valve Jan. 7, 2014
8578959 Rinse valve for vacuum waste system Nov. 12, 2013
8561642 Check valve for transport and storage containers for fluids Oct. 22, 2013
8555916 Solenoid valve having flow control function Oct. 15, 2013
8550302 Wall mounted dispenser Oct. 8, 2013
8511095 Flow discharge device Aug. 20, 2013
8480012 System for failsafe controlled dispensing of liquid material Jul. 9, 2013
8402991 Outlet valve for a frost-preventing faucet Mar. 26, 2013
8365769 Ball valve Feb. 5, 2013
8322369 Damping valve for a hydraulic shock absorber Dec. 4, 2012
8316889 Control valve for a camshaft adjuster Nov. 27, 2012
8312889 Combination flow control valve and reverse flow check valve Nov. 20, 2012
8302822 Pressure regulators for beverage dispensers Nov. 6, 2012
8297305 Valve assembly having an improved flow path Oct. 30, 2012
8291932 Valve means Oct. 23, 2012
8281810 Dry valve for sprinkler system Oct. 9, 2012
8256467 Plug with pressure release valve Sep. 4, 2012
8251081 Device for metering fluids Aug. 28, 2012
8205639 Valve sealant fitting Jun. 26, 2012
8205638 Fluid pressure regulator with no-drain valve Jun. 26, 2012
8181757 Adjustable damping valve with a fail-safe damping force characteristic May. 22, 2012
8171950 Compressed air regulator apparatus situated in canister and method for regulating compressed air thereof May. 8, 2012
8104508 Valve device assembling structure, plug body, and manual valve Jan. 31, 2012
8096320 Compact beverage pressure regulator Jan. 17, 2012
8082950 Tube connector Dec. 27, 2011
8082949 Non-return valve with a ball-shaped valve body Dec. 27, 2011
8079382 Unfreeze faucet structure Dec. 20, 2011
7975720 Ball valve cartridge for use with remote handle Jul. 12, 2011
7967027 Simple diverter valve for a roman tub with replaceable cartridge including at least two checks Jun. 28, 2011
7896199 Portable liquid-dispensing bag Mar. 1, 2011
7806142 Combined relief valve and check valve Oct. 5, 2010
7775231 Retrofitting a fire hydrant with a replacement hydrant body containing a secondary valve Aug. 17, 2010
7751959 Semi-active suspension system with anti-roll for a vehicle Jul. 6, 2010
7748407 Compressed air regulator apparatus situated in canister and method for regulating compressed air thereof Jul. 6, 2010
7686031 Hydrant shoe with backflow prevention assembly Mar. 30, 2010
7617842 Valves for fuel cartridges Nov. 17, 2009
7591291 Refueling assembly having a check valve receptacle and a replaceable fuel receiver for bottom-filled fuel tanks Sep. 22, 2009
7575017 Wet barrel fire hydrant system with second valve Aug. 18, 2009
7549444 Frost free valve assembly Jun. 23, 2009
7520294 Hydrant shoe with backflow prevention assembly Apr. 21, 2009
7500585 Fluid-storing container Mar. 10, 2009
7451782 Flow path control valve Nov. 18, 2008
7445025 Combination valve Nov. 4, 2008
7418974 Tap having a clamping ring on the base end portion Sep. 2, 2008
7395907 Shock absorber with frequency-dependent damping Jul. 8, 2008
7383858 Control valve assembly for a faucet Jun. 10, 2008

1 2 3 4 5 6 7










 
 
  Recently Added Patents
Shoe outsole with a surface ornamentation contrast
Reduction of HMF ethers with metal catalyst
Projection illumination system for EUV microlithography
Sterilizable film for aseptic packaging
Isolation rings for blocking the interface between package components and the respective molding compound
Method and apparatus for wireless transmission of diagnostic information
Compatibility check
  Randomly Featured Patents
Ice fishing slush remover
Peptides acting as both GLP-1 receptor agonists and glucagon receptor antagonists and their pharmacological methods of use
Method for shaping workpieces from thermoplastics
Screen for cathode ray tube and method for manufacturing the same
Complementary bipolar and MOS transistor having power and logic structures on the same integrated circuit substrate
Folding golf cart
Detection cell for guiding excitation light therein and method for using same
Programmable lock and security system therefor
Pressure point foot pad
Solid ink melt tub with corrugated melt region and offset outlet