ClassID:

144063

F04D17/12 - page 2 - CPC Classification

Classification description:

Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps; Centrifugal pumps for compressing or evacuating Multi-stage pumps

Recent Application in this class:
#301
20140050569
2014-02-20

Gas system for compressing a process gas

#302
20140037422
2014-02-06

System and cooling for rapid pressurization of a motor-bearing cooling loop for a hermetically sealed motor/compressor system

#303
20130315707
2013-11-28

Stepped parting joint on a transmission housing of a fluid machine

#304
20130272853
2013-10-17

Compressor

#305
20130251531
2013-09-26

Rotary machine

#306
20130195649
2013-08-01

Compressor employing a dry gas seal

#307
20130195625
2013-08-01

Integral scroll and gearbox for a compressor with speed change option

#308
20130189074
2013-07-25

Multiple-capacity centrifugal compressor and control method thereof

#309
20130183146
2013-07-18

Turbo compressor

#310
20130142623
2013-06-06

Compressor housing and two-stage turbocharger thereof

#311
20130121846
2013-05-16

Advanced topologies for offshore power systems

#312
20130084193
2013-04-04

Motor housing thermal sensing

#313
20130039737
2013-02-14

Method for controlling a compressor

#314
20130028710
2013-01-31

Compact low noise efficient blower for CPAP devices

#315
20130017067
2013-01-17

METHOD OF BEAM WELDING OF AN IMPELLER WITH PERFORMANCE OF TWO PASSES ON A SLOT ; IMPELLER AND TURBO MACHINE HAVING SUCH WELD CONFIGURATION

#316
20120328969
2012-12-27

Fuel cell system with centrifugal blower system for providing a flow of gaseous medium thereto

#317
20120321465
2012-12-20

Rotor structure including an internal hydraulic tension device

#318
20120266887
2012-10-25

Double-ended blower and volutes therefor

#319
20120263605
2012-10-18

COMPRESSION METHOD AND AIR SEPARATION

#320
20120260693
2012-10-18

COMPRESSION METHOD AND AIR SEPARATION

#321
20120222549
2012-09-06

Device for compressing and drying gas and a method applied thereby

#322
20120189431
2012-07-26

Compressor arrangement

#323
20120131897
2012-05-31

Carbon dioxide compression systems

#324
20120107106
2012-05-03

System and method of assembling a supersonic compressor system including a supersonic compressor rotor and a compressor assembly

#325
20120100015
2012-04-26

Multi-stage compressor

#326
20120087810
2012-04-12

Multi-stage centrifugal compressors

#327
20120051957
2012-03-01

Compressor bearing cooling inlet plate

#328
20120051952
2012-03-01

Charging device for an energy conversion device

#329
20120011857
2012-01-19

High-flow-capacity centrifugal hydrogen gas compression systems, methods and components therefor

#330
20110315230
2011-12-29

METHOD AND APPARATUS FOR ACID GAS COMPRESSION

#331
20110305558
2011-12-15

Gear-driven turbo compressor

#332
20110229303
2011-09-22

Method for operating a multistage compressor

#333
20110209786
2011-09-01

Vessel Compressor Methods and Systems

#334
20110194928
2011-08-11

BLOW-OFF SYSTEM FOR MULTI-STAGE TURBO COMPRESSOR

#335
20110135441
2011-06-09

Compressor performance adjustment system

#336
20110097225
2011-04-28

AIR COMPRESSION AND EXPANSION SYSTEM WITH SINGLE SHAFT COMPRESSOR AND TURBINE ARRANGEMENT

#337
20110097203
2011-04-28

Turbo machinery

#338
20110073110
2011-03-31

Compact low noise efficient blower for CPAP devices

#339
20110048046
2011-03-03

Compressor control system using a variable geometry diffuser

#340
20110016914
2011-01-27

Turbo compressor and refrigerator

#341
20110016913
2011-01-27

Turbo compressor and refrigerator

#342
20100322785
2010-12-23

Compressor unit including a detection device to identify non-gaseous fluid in the suction line

#343
20100295396
2010-11-25

Separating can and method for producing the same

#344
20100287958
2010-11-18

Refrigerant compressor

#345
20100281843
2010-11-11

Multi-stage compressor fault detection and protection

#346
20100232952
2010-09-16

Turbo compressor in an axial type of construction

#347
20100180631
2010-07-22

Turbo-compressor-condenser-expander

#348
20100098534
2010-04-22

Integral scroll and gearbox for a compressor with speed change option

#349
20100061843
2010-03-11

Coupling turbochargers for passive pre-swirl counter-rotation

#350
20100028148
2010-02-04

Sealing device for rotary fluid machine, and rotary fluid machine

#351
20100014990
2010-01-21

Compressor Unit

#352
20090320690
2009-12-31

SUCTION FILTER, TURBO COMPRESSOR AND METHOD FOR COMPACT ASSEMBLING OF THE SAME

#353
20090320283
2009-12-31

Suction filter, turbocompressor, and method for compact assembling of the same

#354
20090246013
2009-10-01

Compact low noise efficient blower for CPAP devices

#355
20090202345
2009-08-13

Casing and fluid machine

#356
20090194101
2009-08-06

Respiratory apparatus

#357
20090193842
2009-08-06

Turbo compressor and turbo refrigerator

#358
20090155096
2009-06-18

Heat exchanger

#359
20090025364
2009-01-29

Multi-Stage Compressor, Air-Separating Apparatus Comprising Such a Compressor, and Installation

#360
20080264061
2008-10-30

Modular air compression apparatus with separate platform arrangement

#361
20080139099
2008-06-12

Compressor arrangement and air-conditioning system with compressor arrangement

#362
20080044277
2008-02-21

Insert for fan-motor assembly

#363
20070236094
2007-10-11

Methods and apparatus for using an electrical machine to transport fluids through a pipeline

#364
20070212238
2007-09-13

Rotodynamic Fluid Machine

#365
20070189905
2007-08-16

MULTI-STAGE COMPRESSION SYSTEM AND METHOD OF OPERATING THE SAME

#366
20070154304
2007-07-05

Fluid transfer controllers having a rotor assembly with multiple sets of rotor blades arranged in proximity and about the same hub component and further having barrier components configured to form passages for routing fluid through the multiple sets of rotor blades

#367
20070147985
2007-06-28

Turbo compressor

#368
20070147984
2007-06-28

Turbo compressor

#369
20070134085
2007-06-14

Double-ended blower and volutes therefor

#370
20070065300
2007-03-22

MULTI-STAGE COMPRESSION SYSTEM INCLUDING VARIABLE SPEED MOTORS

#371
20070036662
2007-02-15

Multistage motor-compressor for the compression of a fluid

#372
20060213666
2006-09-28

Hydraulically driven gas recovery device and method of use

#373
20060198727
2006-09-07

Turbocharger compressor having ported second-stage shroud, and associated method

#374
20060185334
2006-08-24

Suction filter, turbo compressor, and method of packaging the compressor

#375
20050217673
2005-10-06

Double-ended blower and volutes therefor

#376
20050005606
2005-01-13

TURBOCHARGER COMPRESSOR WITH NON-AXISYMMETRIC DESWIRL VANES

#377
18409441
2024-10-29

Axially nested compressors

#378
17717889
2024-01-09

Method and apparatus for a submersible multistage labyrinth-screw pump

#379
15200020
2018-09-11

Multistage compressors and reverse compressors comprising a series of centrifugal pumps alternating flow toward and away from axle with better flow transitions between stages

#380
14796610
2017-06-13

Centrifugal pump impeller support system and apparatus