ClassID:

248538

Y10T137/2278 - CPC Classification

Classification description:

Fluid handling Pressure modulating relays or followers

Sub-classes:
Recent Application in this class:
#1
20200096010
2020-03-26

Electro-pneumatic converter, use of an electro-pneumatic converter, positioner, and control unit

#2
20190032683
2019-01-31

Generating two pneumatic signals to operate an actuator on a valve assembly

#3
20180274616
2018-09-27

Torsion spring

#4
20180163887
2018-06-14

High-temperature and high-vibration capable armature assemblies for torque motor valve actuators with increased winding volume

#5
20160230782
2016-08-11

Electro-pneumatic converter with balanced flapper

#6
20160208826
2016-07-21

Double nozzle type smart positioner

#7
20150276083
2015-10-01

Flapper assemblies for torque motors of electrohydraulic valves

#8
20140102549
2014-04-17

Positioner

#9
20130276893
2013-10-24

Electromagnetic flow controller

#10
20130112283
2013-05-09

Vacuum Connector

#11
20130087223
2013-04-11

Method of detecting failure of a servo-valve, and a servo-valve applying the method

#12
20120279580
2012-11-08

Process fluid pressure transmitter with replaceable atmospheric vent filter

#13
20120255621
2012-10-11

System and method for controlling shutoff valves of compressed natural gas fuel tanks in a vehicle

#14
20120199211
2012-08-09

AIRFLOW CONTROL SYSTEM

#15
20120186441
2012-07-26

Torque control for open circuit piston pump

#16
20120139996
2012-06-07

Print head with electromagnetic valve assembly

#17
20120048388
2012-03-01

Versatile emergency shutdown device controller implementing a pneumatic test for a system instrument device

#18
20110303301
2011-12-15

Pressure management hydraulic control valve

#19
20110290337
2011-12-01

Intelligent Pressure Relief Device For A Double Isolation Valve

#20
20110240138
2011-10-06

Electro-pneumatic positioner and electro-pneumatic converting device

#21
20110214751
2011-09-08

Pressure regulator device, especially of the hydraulic remote-control type

#22
20110186144
2011-08-04

Pressurized fluid positioner control system

#23
20110167711
2011-07-14

Modulator

#24
20110114196
2011-05-19

Electronic pressure regulator

#25
20100307606
2010-12-09

Control valve assembly with a workport pressure regulating device

#26
20100170236
2010-07-08

ATMOSPHERIC PRESSURE HYDROPOWER PLANT

#27
20100116347
2010-05-13

Safety override circuit for pneumatic positioner and method of use thereof

#28
20100108149
2010-05-06

Temperature compensated I/P converter

#29
20100079514
2010-04-01

LIQUID SUPPLY DEVICE, IMAGE FORMING DEVICE, AND COMPUTER READABLE MEDIUM

#30
20100037960
2010-02-18

Versatile emergency shutdown device controller implementing a pneumatic test for a system instrument device

#31
20090159135
2009-06-25

Pneumatic amplifier and arrangement for regulating a regulating armature of a process plant

#32
20080122145
2008-05-29

Gas washing device

#33
20080072964
2008-03-27

Microfluidic device capable of equalizing flow of multiple microfluids in chamber, and microfluidic network employing the same

#34
20080035208
2008-02-14

Diaphragm for throttling a volume flow in an air distribution ducting system of an air-conditioning unit of a commercial aircraft

#35
20080021663
2008-01-24

De-pressurization scheme for chromatography columns

#36
20070186974
2007-08-16

Transducer of an electrical input signal into pneumatic output signals

#37
20070183901
2007-08-09

Safety override circuit for pneumatic positioner and method of use thereof

#38
20070079871
2007-04-12

Pneumatic relay and instrument housing combination

#39
20070051405
2007-03-08

Method for controlling operation of cylinder apparatus

#40
20060219299
2006-10-05

Versatile emergency shutdown device controller implementing a pneumatic test for a system instrument device

#41
20060118169
2006-06-08

Lead-lag input filter arrangement with adjustable initial conditions for electro-pneumatic control loops

#42
20060117945
2006-06-08

Pressure mediator with separating membrane and method for the production thereof

#43
20050205130
2005-09-22

Servovalve with torque motor

#44
20050203642
2005-09-15

Control apparatus for controlling a plant by using a delta-sigma modulation algorithm

#45
20050098211
2005-05-12

Three-way bleed type proportional electromagnetic valve