F04C28/00 - CPC Classification Index

ClassID:

143661 ⎘

F04C28/00 - CPC Classification

Classification description:

Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids

Sub-classes:

F04C28/02 » specially adapted for several pumps connected in series or in parallel 128
F04C28/04 » specially adapted for reversible pumps 45
F04C28/06 » specially adapted for stopping, starting, idling or no-load operation 255
F04C28/08 » characterised by varying the rotational speed 236
F04C28/10 » characterised by changing the positions of the inlet or outlet openings with respect to the working chamber 31
F04C28/18 » characterised by varying the volume of the working chamber 51
F04C28/24 » characterised by using valves regulating pressure or flow rate, e.g. discharge valves {unloading valves} 195
F04C28/28 » Safety arrangements; Monitoring 311

Recent Application in this class:

20260117771

Screw Compressor

20260110299

AIR COMPRESSOR HAVING VACUUM AND ASSOCIATED METHODS FOR LOADING AND EXTRACTING MATERIALS

20260002538

COMPRESSION MECHANISM AND SCROLL COMPRESSOR

20250198409

Compressor device with cooling, and method for operating a compressor device

20240068466

PROGRAM UPDATE METHOD FOR THE GAS COMPRESSOR SYSTEM

20230340957

AIR COMPRESSOR HAVING VACUUM AND ASSOCIATED METHODS FOR LOADING AND EXTRACTING MATERIALS

20210246900

Oil-injected multistage compressor device and method for controlling such a compressor device

20190249660

Method for controlling the outlet temperature of an oil injected compressor or vacuum pump and oil injected compressor or vacuum pump implementing such method

20180156215

Rotary compressor and refrigeration cycle device having same

20180112901

System and method for feeding and controlling a variable capacity compressor, a variable capacity compressor and a cooler comprising a variable capacity compressor

20180087496

AUTOMATIC SELF-DRIVING PUMPS

20170314560

Compressor, air conditioning system, and a method of controlling a compressor

20170266769

Compressor diagnostic and protection system and method

20170070065

DC-powered system for controlling an air compressor or hydraulic fluid pump

20170047881

Conduction noise filtering circuit, inverting device, and compressor

20170037726

Intake device, power generator, external combustion system using intake device and power generator, internal combustion system using intake device and power generator, and air hybrid power generation system using intake device and power generator

20160233073

Automated cleanliness diagnostic for mass spectrometer

20150369235

Air supply system with electronic converter

20150367463

Compressor diagnostic and protection system and method

20140129037

Apparatus and method of referencing a sucker rod pump

20140105757

System and method of remotely connecting and disconnecting the auxiliary power supply of a frequency inverter for variable capacity compressor employed in cooling systems

20130294933

Compressor diagnostic and protection system and method

20130164147

Vacuum pumping

20120266611

Method for controlling a composite device and a composite device in which the method can be applied

20110144944

Compressor diagnostic and protection system and method

20100310402

SCREW COMPRESSOR

20090238710

Multicylindrical rotary compressor, compression system, and freezing device using the compression system

20070022771

Cooling system with variable capacity control

20060288715

Compressor with capacity control

20060140802

Multicylindrical rotary compressor, compression system, and freezing device using the compression system

20050235664

Compressor diagnostic and protection system and method

20050235663

Compressor diagnostic and protection system and method

20050235662

Compressor configuration system and method

20050235661

Compressor diagnostic and protection system and method

20050235660

Compressor diagnostic and protection system

20050214128

Speed control for compressors

20050201882

Vacuum pumping system

20050084724

Regenerative compressor motor control for a fuel cell power system

20050019169

Tempering method for a screw-type vacuum pump