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Class Information
Number: 137/9
Name: Fluid handling > Processes > With control of flow by a condition or characteristic of a fluid > For producing proportionate flow
Description: Processes in which one or more conditions of a fluent material is determined and used to produce or control the flow of a fluent material at a part of the system, which flow is regulated by the condition or conditions sensed so as to vary proportionally therewith.

Patents under this class:
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Patent Number Title Of Patent Date Issued
8644993 Method of controlling the flow rate of the liquid by controlling operation of the pump Feb. 4, 2014
8584691 Additive dispensing system and method Nov. 19, 2013
8485219 Flow rate control using mass flow rate control device Jul. 16, 2013
8475550 Self-optimizing odorant injection system Jul. 2, 2013
8464740 Combustor fuel control systems with flow divider assemblies Jun. 18, 2013
8463446 Operating method for a cooling section having centralized detection of valve characteristics and objects corresponding thereto Jun. 11, 2013
8397739 N-channel flow ratio controller calibration Mar. 19, 2013
8387755 Lubrication system and method of control Mar. 5, 2013
8349038 Self optimizing odorant injection system Jan. 8, 2013
8267108 Additive dispensing system and method Sep. 18, 2012
8053249 Method of pumping fluid through a microfluidic device Nov. 8, 2011
8019481 Flow rate ratio control device Sep. 13, 2011
8002457 Process for blending refrigerants Aug. 23, 2011
7735749 Display fountain, system, array and wind detector Jun. 15, 2010
7673645 Gas delivery method and system including a flow ratio controller using a multiple antisymmetric optimal control arrangement Mar. 9, 2010
7621290 Gas delivery method and system including a flow ratio controller using antisymmetric optimal control Nov. 24, 2009
7543595 Valve calibration method and apparatus Jun. 9, 2009
7424894 Method and apparatus for providing a determined ratio of process fluids Sep. 16, 2008
7389786 Ultrasonic and sonic odorization systems Jun. 24, 2008
7360551 Method and apparatus for providing a determined ratio of process fluids Apr. 22, 2008
7189580 Method of pumping fluid through a microfluidic device Mar. 13, 2007
7189581 Method of obtaining a sample concentration of a solution in a microfluidic device Mar. 13, 2007
7155319 Closed loop control on liquid delivery system ECP slim cell Dec. 26, 2006
7143774 Method and apparatus for providing a determined ratio of process fluids Dec. 5, 2006
7105096 Collection of sludge from the floor of a basin with multiple balanced-flow headers Sep. 12, 2006
7096877 Method of establishing at least one enveloped flow in a channel Aug. 29, 2006
7052615 Dispensing system May. 30, 2006
7007707 Mass flow ratio system and method Mar. 7, 2006
6941965 Method and apparatus for providing a determined ratio of process fluids Sep. 13, 2005
6926205 Fluid supply failure protection valve Aug. 9, 2005
6899114 Device for the dilution and application of liquids May. 31, 2005
6895983 Method and apparatus for dividing the flow of a gas stream May. 24, 2005
6857441 Fluid metering device Feb. 22, 2005
6840257 Proportional valve with shape memory alloy actuator Jan. 11, 2005
6840256 Process and apparatus for supplying a gaseous mixture Jan. 11, 2005
6772781 Apparatus and method for mixing gases Aug. 10, 2004
6752166 Method and apparatus for providing a determined ratio of process fluids Jun. 22, 2004
6715505 Steam pressure reducing and conditioning valve Apr. 6, 2004
6662817 Gas-line system for semiconductor-manufacturing apparatus Dec. 16, 2003
6644333 Hand-held shower system with inline adjustable temperature/pressure balanced mixing valve Nov. 11, 2003
6591850 Method and apparatus for fluid flow control Jul. 15, 2003
6571817 Pressure proving gas valve Jun. 3, 2003
6485632 Apparatus and method for reclaiming waste oil for use as fuel for a diesel engine Nov. 26, 2002
6439253 System for and method of monitoring the flow of semiconductor process gases from a gas delivery system Aug. 27, 2002
6418954 System and method for dividing flow Jul. 16, 2002
6374845 System and method for sensing and controlling beverage quality Apr. 23, 2002
6371147 Evaluation and regulation of the thermal power of a flow of combustible gas; characterization of a thermal mass flowmeter Apr. 16, 2002
6367497 Control system for on-off valves resulting in proportional response Apr. 9, 2002
6253779 Blending system and method using an auxiliary measuring device Jul. 3, 2001
6250324 In-line venturi Jun. 26, 2001

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