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Class Information
Number: 251/122
Name: Valves and valve actuation > With material guide or restrictor > Movable or resilient guide or restrictor > Adjustable guide or restrictor > Tapered metering plug
Description: Devices in which the adjustable restrictor is a tapered plug which extends into the flow passage.










Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
8678345 Variable orifice gas flow modulating valve Mar. 25, 2014
8678348 Gas flow control valve Mar. 25, 2014
8662470 Dental syringe Mar. 4, 2014
8585011 Control valve trim Nov. 19, 2013
8568371 Medical valve with improved back-pressure sealing Oct. 29, 2013
8434734 Electromagnetic actuator and valve May. 7, 2013
8403241 Filter case for shower having function of adjusting quantity of outflow of filling material Mar. 26, 2013
8356617 Poppet valve with dual flow area gain Jan. 22, 2013
8348228 Zero-leak variable rate high pressure metering valve Jan. 8, 2013
8322369 Damping valve for a hydraulic shock absorber Dec. 4, 2012
8312902 Filling head with low Reynolds number Nov. 20, 2012
8302617 Fluid control valve Nov. 6, 2012
8302619 Float valve apparatus and its cleaning method Nov. 6, 2012
8186646 Valve trim retention apparatus May. 29, 2012
8087638 Apparatus to control a fluid flow characteristic of fluid regulator bypass valves Jan. 3, 2012
8083936 Reducing waste water in reverse osmosis residential drinking water systems Dec. 27, 2011
8067864 Electric motor sealing configuration Nov. 29, 2011
8028968 Variable orifice gas flow modulating valve Oct. 4, 2011
7938381 Electromagnetic valve May. 10, 2011
7913973 Reverse flow fueldraulic valve Mar. 29, 2011
7832653 Expansion valve having a grooved valve member and refrigeration device including the same Nov. 16, 2010
7828264 Flow control valve Nov. 9, 2010
7815079 Rapid comestible fluid dispensing apparatus and method Oct. 19, 2010
7815078 Beverage dispensing tap Oct. 19, 2010
7757713 Hydraulic valve Jul. 20, 2010
7758014 High-pressure miniature needle valve with pressure-enhanced seal Jul. 20, 2010
7682514 Supercritical water oxidation apparatus and process Mar. 23, 2010
7677530 Flow rate regulation valve Mar. 16, 2010
7661651 Apparatus for controlling medium flow Feb. 16, 2010
7537194 Flow control valve May. 26, 2009
7429027 Self-flushing needle valve Sep. 30, 2008
7363941 Fluid control valve device Apr. 29, 2008
7237574 Controlled dispersion multi-phase nozzle and method of making the same Jul. 3, 2007
7168678 Needle valve construction Jan. 30, 2007
7137612 High recovery metering valve Nov. 21, 2006
7121296 Variable orifice valve for air stream containing particulate coal Oct. 17, 2006
7077299 Dispensing faucet for a pressurized source Jul. 18, 2006
7044434 High recovery sonic gas valve May. 16, 2006
7036788 Directly controlled proportional pressure limiting valve May. 2, 2006
7036790 Vacuum pressure regulating valve May. 2, 2006
7028983 Coupling member of a pipe coupling and valve body used in a coupling member Apr. 18, 2006
7007917 Electromagnetic control valve Mar. 7, 2006
7004448 Trim insert for choke assembly Feb. 28, 2006
6991212 Needle valve Jan. 31, 2006
6981688 Flow control device Jan. 3, 2006
6962270 Dosing valve with flow rate sensor for a beverage dispenser Nov. 8, 2005
6926249 Precision modulating globe valve Aug. 9, 2005
6923203 Variable orifice valve for airstream containing particulate coal Aug. 2, 2005
6896237 Control valve for a water closet May. 24, 2005
6892818 Interchangeable choke assembly May. 17, 2005

1 2 3 4 5










 
 
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