ClassID:

144064

F04D17/122 - 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 the individual rotor discs being, one for each stage, on a common shaft and axially spaced, e.g. conventional centrifugal multi- stage compressors

Recent Application in this class:
#301
20110017307
2011-01-27

Compressor assembly including separator and ejector pump

#302
20110008186
2011-01-13

High-pressure compression unit for process fluids for industrial plant and a related method of operation

#303
20100296922
2010-11-25

Pressure vessel having a lid

#304
20100296916
2010-11-25

Gas compressor

#305
20100290896
2010-11-18

Compressor unit and assembly method

#306
20100272564
2010-10-28

Multi stage radial compressor

#307
20100272561
2010-10-28

Boltless multi-part diaphragm for use with a centrifugal compressor

#308
20100239441
2010-09-23

Compressor system for underwater use having a stator packet with an annular cooling chamber

#309
20100239437
2010-09-23

Fluid channeling device for back-to-back compressors

#310
20100232984
2010-09-16

Compressor Unit and Use of a Cooling Medium

#311
20100158679
2010-06-24

RADIAL COMPRESSOR

#312
20100143113
2010-06-10

Horizontally split flow machine housing

#313
20100124491
2010-05-20

Multistage radial turbocompressor

#314
20100098538
2010-04-22

Casing for a fluid flow machine

#315
20100034673
2010-02-11

Suction device for dental, medical and industrial purposes

#316
20100028141
2010-02-04

Multistage centrifugal compressor

#317
20100014990
2010-01-21

Compressor Unit

#318
20090317265
2009-12-24

Method and apparatus for protection of compressor modules against influx of contaminated gas

#319
20090317248
2009-12-24

Centrifugal compressor having vaneless diffuser and vaneless diffuser thereof

#320
20090311108
2009-12-17

Method for operation of a compressor unit, and associated compressor unit

#321
20090266553
2009-10-29

Apparatus and method for preventing the penetration of seawater into a compressor module during lowering to or retrieval from the seabed

#322
20090263265
2009-10-22

Compressor Unit

#323
20090246013
2009-10-01

Compact low noise efficient blower for CPAP devices

#324
20090220362
2009-09-03

Compressor unit

#325
20090205362
2009-08-20

Centrifugal compressor assembly and method

#326
20090205360
2009-08-20

Centrifugal compressor assembly and method

#327
20090196745
2009-08-06

Inlet guide vane, compressor and refrigerator

#328
20090196741
2009-08-06

Turbo compressor and refrigerator

#329
20090193845
2009-08-06

Turbo compressor and refrigerator

#330
20090193844
2009-08-06

Inlet guide vane, turbo compressor, and refrigerator

#331
20090193843
2009-08-06

Turbo compressor and refrigerator

#332
20090193841
2009-08-06

Turbo compressor with multiple stages of compression devices

#333
20090193840
2009-08-06

Turbo compressor and refrigerator

#334
20090193839
2009-08-06

Turbo compressor and refrigerator

#335
20090175717
2009-07-09

Multistage turbocompressor

#336
20090081031
2009-03-26

Vertical vapor compressor

#337
20090081021
2009-03-26

Blower

#338
20090044548
2009-02-19

Two-stage vapor cycle compressor

#339
20090015012
2009-01-15

Axial in-line turbomachine

#340
20090004029
2009-01-01

Multistage compressor unit with cooling device

#341
20080286095
2008-11-20

Centrifugal compressor return passages using splitter vanes

#342
20080279680
2008-11-13

Multistage centrifugal compressor

#343
20080152478
2008-06-26

Rotor mechanism of centrifugal compressor

#344
20080031732
2008-02-07

Closure device for a turbomachine casing

#345
20070274822
2007-11-29

Vacuum Pump

#346
20070200438
2007-08-30

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

#347
20070172363
2007-07-26

Centrifugal motor-compressor unit

#348
20070147987
2007-06-28

Self-aspirated flow control system for centrifugal compressors

#349
20070140889
2007-06-21

Flow passage structure for refrigerant compressor

#350
20070134085
2007-06-14

Double-ended blower and volutes therefor

#351
20070122296
2007-05-31

Turbocharger having two-stage compressor with boreless first-stage impeller

#352
20070122273
2007-05-31

Multistage centrifugal compressor

#353
20070110601
2007-05-17

Compressor Unit Comprising a Centrifugal Compressor and an Electric Motor

#354
20060269394
2006-11-30

Blower

#355
20050217673
2005-10-06

Double-ended blower and volutes therefor

#356
20050214125
2005-09-29

Impeller lock assembly and method

#357
20050118034
2005-06-02

Compressor unit with control system

#358
20050103339
2005-05-19

Multiple stage blowers and volutes therefor

#359
20050005606
2005-01-13

TURBOCHARGER COMPRESSOR WITH NON-AXISYMMETRIC DESWIRL VANES

#360
20050002781
2005-01-06

Compressor for a gas turbine engine

#361
18901834
2025-12-23

Interstage capacity control valve with separate drive and stabilization linkages