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Class Information
Number: 137/808
Name: Fluid handling > Flow affected by fluid contact, energy field or coanda effect (e.g., pure fluid device or system) > Means to cause rotational flow of fluid (e.g., vortex generator)
Description: Device or system provided with means to compel any of the streams of fluid to turn about an axis in a generally circular (i.e., "vortex") path.










Sub-classes under this class:

Class Number Class Name Patents
137/812 By tangential input to axial output (e.g., vortex amplifier) 64
137/809 Plural vortex generators 41
137/810 Vortex generator as control for system 87
137/811 Vortex generator in interaction chamber of device 50


Patents under this class:
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Patent Number Title Of Patent Date Issued
8684040 Reduction of vortex induced forces and motion through surface roughness control Apr. 1, 2014
8657017 Method and apparatus for autonomous downhole fluid selection with pathway dependent resistance system Feb. 25, 2014
8631827 Fluid flow control device Jan. 21, 2014
8622075 Fluid flow control valve Jan. 7, 2014
8511714 Connector assemblies for flow restricting apparatuses Aug. 20, 2013
8490645 Pressure sensor, pressure-differential flow rate meter, and flow rate controller Jul. 23, 2013
8381870 Fluid flow controller Feb. 26, 2013
8381770 Blowoff tank Feb. 26, 2013
8376047 Variable flow restrictor for use in a subterranean well Feb. 19, 2013
8356668 Variable flow restrictor for use in a subterranean well Jan. 22, 2013
8276669 Variable flow resistance system with circulation inducing structure therein to variably resist flow in a subterranean well Oct. 2, 2012
8261839 Variable flow resistance system for use in a subterranean well Sep. 11, 2012
8047232 Enhancement of vortex induced forces and motion through surface roughness control Nov. 1, 2011
7980271 Fluid flow controller Jul. 19, 2011
7811450 Swirl chamber with movable non-return valve and air injector for prevention of sedimentation in storm water and waste drains Oct. 12, 2010
7802583 Fluid flow control device Sep. 28, 2010
7794544 Control of gas flow and delivery to suppress the formation of particles in an MOCVD/ALD system Sep. 14, 2010
7779866 Segmented trapped vortex cavity Aug. 24, 2010
7712317 Flow control systems May. 11, 2010
7640973 Device for diversion of cavitation flowback Jan. 5, 2010
7595487 Confining/focusing vortex flow transmission structure, mass spectrometry systems, and methods of transmitting particles, droplets, and ions Sep. 29, 2009
7243678 Fuel fill system with fuel vapor recirculation Jul. 17, 2007
7144515 Method and apparatus for improving swimming pool skimmer efficiency Dec. 5, 2006
7111797 Non-contact fluid particle cleaner and method Sep. 26, 2006
7011101 Valve system Mar. 14, 2006
6938835 Liquid scanner nozzle and method Sep. 6, 2005
6811687 Vortex pool cleaner Nov. 2, 2004
6615507 Mixer for mixing gases and other newton liquids Sep. 9, 2003
6482306 Meso- and microfluidic continuous flow and stopped flow electroosmotic mixer Nov. 19, 2002
6406216 Storm sewer overflow control device Jun. 18, 2002
6082925 Storm sewer overflow control device Jul. 4, 2000
5984662 Karman vortex generating burner assembly Nov. 16, 1999
5935424 Close tolerance, low flow, flow control device using etched discs Aug. 10, 1999
5505262 Fluid flow acceleration and pulsation generation apparatus Apr. 9, 1996
5322043 Spiral spin charge or sheathing system Jun. 21, 1994
5188868 Method for coating surfaces of a powdered material by directing coating material into Coanda spiral flow of powdered material Feb. 23, 1993
5145256 Apparatus for treating effluents Sep. 8, 1992
5070972 Vortex valving assembly for a hydraulic damper Dec. 10, 1991
4830053 Fluidic devices May. 16, 1989
4815495 Quick disconnect having reduced fluid pressure drop Mar. 28, 1989
4762148 Apparatus and method for the generation and utilization of a spiral gas stream in a pipeline Aug. 9, 1988
4721126 Method of generating spiral fluid flow and the device therefor Jan. 26, 1988
4684296 Method and apparatus for the generation and utilization of a spiral gas stream in a pipeline Aug. 4, 1987
4679595 Device for controlling the flow in a pipe system Jul. 14, 1987
4679778 Fluid-containing power unit mounting device Jul. 14, 1987
4601309 Valve and dash-pot assembly Jul. 22, 1986
4457409 Vortex shock absorber with absorbing force relief means Jul. 3, 1984
4323991 Fluidic mud pulser Apr. 6, 1982
4241877 Stable vortex generating device Dec. 30, 1980
4206783 Vortex chamber valve Jun. 10, 1980

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