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Class Information
Number: 251/192
Name: Valves and valve actuation > With means to increase head and seat contact pressure > Rotary valve
Description: Subject matter comprising rotary valves.










Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8678026 Automatic increased-suction relief apparatus Mar. 25, 2014
8651136 Valve with a metal gasket Feb. 18, 2014
8641012 Medical connector Feb. 4, 2014
8584705 Bidirectional sleeved/plug ball check valve Nov. 19, 2013
8500090 Ball valve sealing ring Aug. 6, 2013
8479771 Diverter valve Jul. 9, 2013
8434736 Fluid passage valve May. 7, 2013
8424841 Multi-component metal seat design for ball valves Apr. 23, 2013
8403293 Axially energisable ball valve Mar. 26, 2013
8262061 Ball valve Sep. 11, 2012
8201574 Bi-directional sealing ball valve Jun. 19, 2012
8172200 Flow control valve for fluidized material May. 8, 2012
8002237 Seat arrangement with cavity pressure relief for a ball valve Aug. 23, 2011
7988127 Valve with self-expanding seals Aug. 2, 2011
7819383 Three-position selector valve Oct. 26, 2010
7775502 Ball valve with a rotatable body capable of being kept out of substantial contact with a seat member Aug. 17, 2010
7758016 Ball valve Jul. 20, 2010
7644840 Valve assembly for viscous fluid dispensers Jan. 12, 2010
7559531 Low torque ball valve with dynamic sealing Jul. 14, 2009
7484710 Fluid flow control valve with high temperature bi-directional shutoff Feb. 3, 2009
7451959 Plug valve having a seal boss Nov. 18, 2008
7337797 Ball valve and method of manufacture Mar. 4, 2008
7281700 Gate valve apparatus for vacuum processing system Oct. 16, 2007
7278444 Valve assembly having improved pump-down performance Oct. 9, 2007
7267323 Ball valve with cartridge Sep. 11, 2007
7159844 Two-part flap valve Jan. 9, 2007
7156369 Valve control device Jan. 2, 2007
7051994 Control valve with detachable descrete curtain valve assembly May. 30, 2006
7036793 Stop valve May. 2, 2006
7032883 Hybrid butterfly fluid control valve Apr. 25, 2006
6988708 Low torque ball valve seat Jan. 24, 2006
6983925 Rotary barrel gate valve Jan. 10, 2006
6978977 Dual lift system Dec. 27, 2005
6974121 Fluid flow control valve with bi-directional shutoff Dec. 13, 2005
6840502 Flap valve for fuel aggregates Jan. 11, 2005
6783111 Dual lift system Aug. 31, 2004
6708946 Ball valve Mar. 23, 2004
6672563 Ball valve having a magnetic seat sealing device Jan. 6, 2004
6598853 Plug valve with cam actuated seal means Jul. 29, 2003
6425570 Ball valve having retractable sealing member Jul. 30, 2002
6378841 Quarter-turn rotary plug valve with seats reciprocable during operation Apr. 30, 2002
6267353 Self draining valve Jul. 31, 2001
6217002 Valve assembly having floating retainer rings Apr. 17, 2001
6217003 Valve assembly having floating retainer rings Apr. 17, 2001
6050289 Spherical valve for flow control of particulate solids and gases Apr. 18, 2000
5971020 Rotary coupling for an article handler Oct. 26, 1999
5931194 Rotary coupling for an article handler Aug. 3, 1999
5842680 Actuator using magnetic forces to reduce frictional forces Dec. 1, 1998
5799928 Ball valve with improved valve seat and bonnet assembly Sep. 1, 1998
5769392 Water flowrate control device Jun. 23, 1998

1 2 3










 
 
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