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Class Information
Number: 137/874
Name: Fluid handling > Systems > With flow control means for branched passages > With valve or movable deflector at junction > Valve or deflector is tubular passageway
Description: System in which the fluent material flow control means or diverting means comprises, at least in part, a movable tubular switching passageway.










Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8667987 Flow controlled switching valve Mar. 11, 2014
8657801 Switching device and an irrigation system comprising the device Feb. 25, 2014
8469059 Fluid divider valves Jun. 25, 2013
8381771 Material feed container for a thick-matter pump Feb. 26, 2013
8322379 Diverter valve Dec. 4, 2012
8151825 Reverse flow wye connector Apr. 10, 2012
8001994 Gas channeling device for directing blasts of gas through alternative outlet passageways and method therefor Aug. 23, 2011
7900651 Material feed container for a thick-matter pump Mar. 8, 2011
7896846 Trocar seal system Mar. 1, 2011
7891377 Reverse flow wye connector Feb. 22, 2011
7886769 Diverter valve having an improved transition and outlet port Feb. 15, 2011
7429027 Self-flushing needle valve Sep. 30, 2008
7343933 Multi-port flow selector manifold valve and manifold system Mar. 18, 2008
7282043 Trocar seal system Oct. 16, 2007
7255129 Valve with elbow joint diverter Aug. 14, 2007
7048006 Material feeding container for two-cylinder thick matter pumps May. 23, 2006
6837272 Piggable valve especially for a piggable paint supply line Jan. 4, 2005
6675398 Diverter for use with tank valves to direct flow to tank or rim Jan. 13, 2004
6601610 Changeover valve and gas transportation pipe system Aug. 5, 2003
6572078 Changover valve Jun. 3, 2003
6482181 Trocar seal system Nov. 19, 2002
6311727 Diverter valve Nov. 6, 2001
6145247 Fluid switch Nov. 14, 2000
6058974 Valve for changing the direction of flow in pipes leading to/from a heat-exchanger May. 9, 2000
5966847 Pneumatic excavator Oct. 19, 1999
5967420 Nozzle assembly for spraying Oct. 19, 1999
5950677 Pressure equalization valve Sep. 14, 1999
5857490 Structure of a pump valve for concrete mixture pumping trucks Jan. 12, 1999
5803118 Metered feed valve Sep. 8, 1998
5746247 Slide valve for a twin-cylinder pump for viscous fluids May. 5, 1998
5678265 Inflatable cushion Oct. 21, 1997
5433250 Hydraulic line switches Jul. 18, 1995
5329968 Shuttle valve Jul. 19, 1994
5251670 Flush valve Oct. 12, 1993
5205490 Body spray nozzle Apr. 27, 1993
5188151 Flow diverter valve Feb. 23, 1993
5140759 Pneumatic device for excavating and removing material Aug. 25, 1992
5133424 Variable assist power steering control valve Jul. 28, 1992
5129459 Subsea flowline selector Jul. 14, 1992
5127429 Method and device for distributing pumpable thick matter into several delivery pipes Jul. 7, 1992
5114594 Rainwater diverter May. 19, 1992
5069583 Device for changing flow paths in a pneumatic conveying system Dec. 3, 1991
5029608 Diverter valve Jul. 9, 1991
5014716 Sphygmomanometer air connector May. 14, 1991
4979884 Multi-cylinder pump for heavy flowable materials Dec. 25, 1990
4952100 Pipe switch for plants for pneumatically conveying bulk material Aug. 28, 1990
4921402 Balloon inflator valve May. 1, 1990
4893656 Diverter valve Jan. 16, 1990
4852892 Convenient dual fuel tank system Aug. 1, 1989
4821772 Dual active selector valve Apr. 18, 1989

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