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Class Information
Number: 137/527
Name: Fluid handling > Line condition change responsive valves > Direct response valves (i.e., check valve type) > Pivoted valves
Description: Valves in which the valve disc or plug swings around the means by which it is mounted in the valve seat or casing.










Sub-classes under this class:

Class Number Class Name Patents
137/527.2 Head retained by removable closure 33
137/527.4 Valve head movably connected for accommodation to seat 70
137/527.6 Valve mounted on end of pipe 71
137/527.8 Weight biased 268


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

Patent Number Title Of Patent Date Issued
8667794 Valve seat and gasket for exhaust bypass valve Mar. 11, 2014
8636026 Backflow preventing apparatus for water closets Jan. 28, 2014
8636233 Low precipitation rate rotor-type sprinkler with intermittent stream diffusers Jan. 28, 2014
8616235 Valves Dec. 31, 2013
8602061 Flow control valve Dec. 10, 2013
8567435 Centreline flow valve Oct. 29, 2013
8544549 Downhole deployment valves Oct. 1, 2013
8534362 Downhole deployment valves Sep. 17, 2013
8522878 Downhole deployment valves Sep. 3, 2013
8490648 Check valve Jul. 23, 2013
8453672 Passive valve for attenuation of low frequency noise Jun. 4, 2013
8443834 Nozzle check valve May. 21, 2013
8439088 One-way valve for a fuel-tank filling conduit May. 14, 2013
8439118 Pressure vortex device to allow flapper closure in high velocity fluid applications May. 14, 2013
8414368 Fan damper Apr. 9, 2013
8413674 Valve with electromechanical device for actuating the valve Apr. 9, 2013
8403001 Connector for fuel tank and check valve Mar. 26, 2013
8375982 Hydraulic circuit and manifold with multifunction valve Feb. 19, 2013
8342247 Safety valve having mono spring closure mechanism Jan. 1, 2013
8307841 Valve for inflatable objects Nov. 13, 2012
8261836 Downhole deployment valves Sep. 11, 2012
8240331 Negative pressure relief valve assembly Aug. 14, 2012
8201576 Reinforced elastomeric hinge check valve Jun. 19, 2012
8196600 High-temperature jointed assemblies and wear-resistant coating systems therefor Jun. 12, 2012
8191572 Snap action valve with bumper pad Jun. 5, 2012
8181669 Compliant check valve stop May. 22, 2012
8122911 Adjustable orifice for coal supply conduit Feb. 28, 2012
8104505 Two-way actuator and method Jan. 31, 2012
8096318 Valve flap for a plumbing valve Jan. 17, 2012
8029939 Fuel cell ejector with integrated check valve Oct. 4, 2011
8028525 Multistage exhaust turbocharger Oct. 4, 2011
8015825 Fast acting aircraft engine bleed air check valve Sep. 13, 2011
7954509 Check valves with hinge shafts retained by welding Jun. 7, 2011
7938138 Valve for inflatable objects May. 10, 2011
7906017 Water circulation systems for ponds, lakes, municipal tanks, and other bodies of water Mar. 15, 2011
7895993 Internal combustion engine having exhaust gas recirculation Mar. 1, 2011
7805933 Throttle arrangement and exhaust system equipped with same Oct. 5, 2010
7798235 Safety valve torsional spring assembly and method Sep. 21, 2010
7789104 Backflow preventing apparatus for water closets Sep. 7, 2010
7762336 Flapper latch Jul. 27, 2010
7748404 Multi-purpose exhaust valve spring Jul. 6, 2010
7644724 Valve with electromechanical device for actuating the valve Jan. 12, 2010
7600534 Valve closing device Oct. 13, 2009
7568499 Fuel check valve Aug. 4, 2009
7559338 Keyless fire hydrant protection system Jul. 14, 2009
7533691 Adjustable damper assembly May. 19, 2009
7533693 Side-mounted position indicator for flapper check valve May. 19, 2009
7527069 Electromagnetic split flapper pressure relief valve May. 5, 2009
7510010 System and method for cementing through a safety valve Mar. 31, 2009
7493770 Methods and apparatus for regulating airflow supply systems Feb. 24, 2009

1 2 3 4 5 6 7










 
 
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