F04B27/0404 - CPC Classification Index

ClassID:

142840 ⎘

F04B27/0404 - CPC Classification

Classification description:

Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement Details, component parts specially adapted for such pumps

Sub-classes:

F04B27/0409 » {Pistons} 26
F04B27/0414 » {Cams} 27
F04B27/0423 » {Cylinders} 14
F04B27/0428 » {Arrangements for pressing or connecting the pistons against the actuated cam} 6
F04B27/0437 » {Disconnecting the pistons from the actuated cam } 2
F04B27/0442 » {Supporting and guiding means for the pistons} 4
F04B27/0446 » {Draining of the engine housing; Arrangements dealing with leakage fluid} 0
F04B27/0451 » {Particularities relating to the distribution members } 11

Recent Application in this class:

20210215148

METHOD AND EQUIPMENT FOR IMPROVING THE EFFICIENCY OF COMPRESSORS AND REFRIGERATORS

20180245574

Reciprocating piston compressor, a retrofit kit for a reciprocating piston compressor and the use of a connecting rod in a reciprocating piston compressor

20170167479

Reciprocating compressor crankshaft adapter and method

20160281701

Method and equipment for improving the efficiency of compressors and refrigerators

20150322997

Connecting rod for an air compressor

20150322933

Radially configured oil-free compressor

20150003971

Sealing arrangement for semi-hermetic compressor

20140216262

Reciprocating pump and oxygen concentrator

20130343925

Compressor and vacuum machine

20130224051

COMPRESSOR AND VACUUM MACHINE

20120269662

Mounting arrangement for an eccentric shaft in a refrigeration compressor

20120107144

VARIABLE BORE CONVERTIBLE COMPRESSOR CYLINDER

20120051949

Reciprocating compressor crankshaft adapter and method

20120023973

METHOD AND EQUIPMENT FOR IMPROVING THE EFFICIENCY OF COMPRESSORS AND REFRIGERATORS

20110265510

RECIPROCATING COMPRESSOR AND REFRIGERATING APPARATUS HAVING THE SAME

20100272585

Radial cam-driven compressor and radial cam-driven compressor assemblies

20100236648

FILLING MACHINE FOR HIGHLY COMPRESSED GAS

20100158712

COMPRESSOR WITH DUAL OUTBOARD SUPPORT BEARINGS

20090199811

Crankshaft beam piston engine or machine

20080141855

Efficiencies for cam-drive piston engines or machines

20070056552

Efficiencies for piston engines or machines