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Class Information
Number: 137/10
Name: Fluid handling > Processes > With control of flow by a condition or characteristic of a fluid > By speed of fluid
Description: Processes in which the condition or characteristic determined is the speed of the fluent material of the system.

Patents under this class:

Patent Number Title Of Patent Date Issued
8555914 Method for autonomous control of a chemical injection systems for oil and gas wells Oct. 15, 2013
8313701 Liquid vacuum chemical feeder system Nov. 20, 2012
8281796 Slurry catalyst flow splitters and methods of using the same Oct. 9, 2012
8215825 Fluid mixing apparatus and method Jul. 10, 2012
7918238 Flow controller and its regulation method Apr. 5, 2011
7881886 Methods for performing transient flow prediction and verification using discharge coefficients Feb. 1, 2011
7753066 Single system for low or high pressure gases control and high or low pressure gases control valve Jul. 13, 2010
7632092 Regulating device for the cooling air flows of a bulk material grate cooler Dec. 15, 2009
7517440 Electrokinetic delivery systems, devices and methods Apr. 14, 2009
7054766 Fluid properties evaluation May. 30, 2006
6827236 Dual piston/poppet flow switch Dec. 7, 2004
6789558 Digitally controlled direct drive valve and system and method for manufacturing the same Sep. 14, 2004
6782906 Time based mass flow controller and method for controlling flow rate using it Aug. 31, 2004
6752928 Flow matching method and system using two transducers Jun. 22, 2004
6746606 Method and system for matching flow rate Jun. 8, 2004
6736881 Method and arrangement for cleaning pipe-shaped filter elements May. 18, 2004
6681787 System and method of operation of a digital mass flow controller Jan. 27, 2004
6655408 Tunable ramp rate circuit for a mass flow controller Dec. 2, 2003
6640822 System and method of operation of a digital mass flow controller Nov. 4, 2003
6543466 Mass flow controller and method of operation of mass flow controller Apr. 8, 2003
6539968 Fluid flow controller and method of operation Apr. 1, 2003
6443174 Fluid mass flow control valve and method of operation Sep. 3, 2002
6439254 Mass flow controller automation method and related system Aug. 27, 2002
6418955 Multiple feed powder splitter Jul. 16, 2002
6401741 Excess flow shut-off valve Jun. 11, 2002
6382228 Fluid driving system for flow cytometry May. 7, 2002
6321765 Method of operation of mass flow controller Nov. 27, 2001
6019115 Safety excess flow valve system with adjustable closing flow rate settings Feb. 1, 2000
5960807 Vibration and flow actuated valve shutoff system Oct. 5, 1999
5812423 Method of determining working media motion and designing flow structures for same Sep. 22, 1998
5720313 Flow rate control system Feb. 24, 1998
5718255 Flow-responsive diverting valve Feb. 17, 1998
5709239 Automatic shut-off safety device Jan. 20, 1998
5660198 Flow compensated pressure control system Aug. 26, 1997
5609178 Pressure-actuated valve and method Mar. 11, 1997
5455076 Method and apparatus for proportioning and mixing non-compressible and compressible fluids Oct. 3, 1995
5304390 Supercritical ratio control system utilizing a sonic flow venturi and an air-driven positive displacement pump Apr. 19, 1994
5129414 Expansible chamber device having variably restrained valve systems Jul. 14, 1992
4736763 Automatic device for the detection and shutoff of unwanted liquid flow in pipes Apr. 12, 1988
4643213 Method and apparatus for controlling leaks in pressurized fluid systems Feb. 17, 1987
4625744 Process and device for performing a series of hydrodynamic functions on a flow comprised of at least two phases Dec. 2, 1986
4569012 Method and system for controlling fluid transportation in a pipe network Feb. 4, 1986
4539967 Duty ratio control method for solenoid control valve means Sep. 10, 1985
4458709 Method and apparatus for measuring and controlling fluid flow rates Jul. 10, 1984
4327759 Slurry producing apparatus May. 4, 1982
4275752 Fluid flow apparatus and method Jun. 30, 1981
4228815 Measurement and control of multicomponent liquid systems Oct. 21, 1980
4182354 Method and apparatus for flow diversion in a high pressure fluid delivery system Jan. 8, 1980

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