F04B1/04 - CPC Classification Index

ClassID:

142567 ⎘

F04B1/04 - CPC Classification

Classification description:

Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement

Sub-classes:

F04B1/0404 » {Details, component parts specially adapted for such pumps} 109
F04B1/047 » with an actuating or actuated element at the outer ends of the cylinders 42
F04B1/053 » with an actuating or actuated element at the inner ends of the cylinders 112
F04B1/06 » Control 29
F04B1/10 » the cylinders being movable, e.g. rotary 7

Recent Application in this class:

20250382861

2025-12-18

HYDRAULIC FRACTURING PUMPS TO ENHANCE FLOW OF FRACTURING FLUID INTO WELLHEADS AND RELATED METHODS

20240093680

2024-03-21

Semi-Trailer-Loaded Turbine Fracturing Equipment

20240044235

2024-02-08

HYDRAULIC FRACTURING PUMPS TO ENHANCE FLOW OF FRACTURING FLUID INTO WELLHEADS AND RELATED METHODS

20230392487

2023-12-07

HYDRAULIC FRACTURING PUMPS TO ENHANCE FLOW OF FRACTURING FLUID INTO WELLHEADS AND RELATED METHODS

20230082868

2023-03-16

Hydraulic fracturing pumps to enhance flow of fracturing fluid into wellheads and related methods

20230039274

2023-02-09

HYDRAULIC PUMP

20220412201

2022-12-29

Hydraulic fracturing pumps to enhance flow of fracturing fluid into wellheads and related methods

20220372857

2022-11-24

Hydraulic fracturing pumps to enhance flow of fracturing fluid into wellheads and related methods

20210340978

2021-11-04

Power end frame with residual compressive stress and methods

#10

20210172433

2021-06-10

Method and device for determining a wear condition in a hydrostatic pump

#11

20210131420

2021-05-06

Automatic double-acting valve and pump equipped with said valve

#12

20190010965

2019-01-10

Hydraulic apparatus comprising synthetically commutated machine, and operating method

#13

20180335024

2018-11-22

Hydraulic pump

#14

20180283371

2018-10-04

DISTRIBUTOR DEVICE AND PRESSURE LIMITER, IN PARTICULAR FOR A HYDRAULIC ASSISTANCE DEVICE ON A VEHICLE AND VEHICLE PROVIDED WITH SAME

#15

20170306936

2017-10-26

Controller for hydraulic pump

#16

20170306910

2017-10-26

Pump unit for supplying fuel, preferably diesel oil, to an internal combustion engine

#17

20170292513

2017-10-12

Pump assembly health assessment

#18

20170175591

2017-06-22

Cam follower roller device

#19

20170107863

2017-04-20

Roller tappet for a fuel unit pump of an internal combustion engine

#20

20170009753

2017-01-12

Radial piston pump assemblies and use thereof in hydraulic circuits

#21

20160369785

2016-12-22

SYSTEM AND METHOD FOR CONVERTING GRAVITATIONAL ENERGY INTO ROTATIONAL ENERGY AND MOVEMENTS

#22

20150128797

2015-05-14

Radial piston engine with brake

#23

20140202325

2014-07-24

Compact Radial Piston Hydraulic Machine Having a Cylinder Block with Deforming Regions

#24

20130145758

2013-06-13

Hydraulic module including a pump housing with surface-connected pump elements

#25

20120312158

2012-12-13

Ring cam and fluid-working machine including ring cam

#26

20120260795

2012-10-18

RING CAM AND FLUID-WORKING MACHINE INCLUDING RING CAM

#27

20120260765

2012-10-18

RING CAM AND FLUID-WORKING MACHINE INCLUDING RING CAM

#28

20110233931

2011-09-29

Energy management system for heavy equipment

#29

20090114292

2009-05-07

Valve assembly

#30

20060056995

2006-03-16

Motor-pump unit

#31

18616194

2024-08-06

Four-quadrant radial piston hydraulic device and working method thereof