ClassID:

146162

F15B21/047 - CPC Classification

Classification description:

Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass; Special measures taken in connection with the properties of the fluid Preventing foaming, churning or cavitation

Recent Application in this class:
#1
20260028800
2026-01-29

MOBILE WORK MACHINE WITH EMERGENCY STOP FUNCTION IN CASE OF LEAKAGE IN THE WORK LINE

#2
20250361883
2025-11-27

HYDRAULIC SYSTEM

#3
20250216281
2025-07-03

DEVICE AND METHOD FOR CAVITATION DETECTION OF PURE WATER HYDRAULIC SYSTEM BASED ON PRESSURE

#4
20250012051
2025-01-09

WORK MACHINE

#5
20240280171
2024-08-22

VALVE MODULE WITH ACTIVE VALVE OILING

#6
20230022750
2023-01-26

Dynamic Logic Element For Controlling Pressure Limit In Hydraulic System

#7
20220325727
2022-10-13

Hydraulic oil diffuser

#8
20210262494
2021-08-26

Valve with anti-cavitation features

#9
20210170307
2021-06-10

Vortex reservoir

#10
20200240445
2020-07-30

Electrohydraulic System with a Hydraulic Spindle and at least One Closed Hydraulic Circuit

#11
20200207589
2020-07-02

CRANE HAVING A CLOSED HYDRAULIC CIRCUIT

#12
20200124059
2020-04-23

Tank for a hydraulic unit

#13
20200079483
2020-03-12

Prevention of cavitation

#14
20200009477
2020-01-09

Vortex reservoir

#15
20190309771
2019-10-10

Hydraulic fluid circuit with fixed minimum back pressure

#16
20190233086
2019-08-01

Aircraft hydraulic system

#17
20190186106
2019-06-20

Work machine

#18
20190178234
2019-06-13

Cavitation avoidance system

#19
20190136875
2019-05-09

Hydraulic circuit for travel motor

#20
20180024577
2018-01-25

Pressure-limiting valve

#21
20170298965
2017-10-19

Hydraulic fluid tank arrangement

#22
20160273555
2016-09-22

Regenerative reservoir

#23
20160032839
2016-02-04

Compositions and methods for generating cavitation resistance

#24
20150260205
2015-09-17

Void protection system

#25
20150239497
2015-08-27

Fluid container in particular hydraulic tank for a motor pump unit

#26
20150122117
2015-05-07

Device And Method In Respect Of A Rock Drilling Machine And Rock Drilling Machine

#27
20150033719
2015-02-05

Reducing dig force in hydraulic implements

#28
20140308106
2014-10-16

Void protection system

#29
20140014215
2014-01-16

Return diffuser for hydraulic tank

#30
20130167522
2013-07-04

Hydraulic circuit for construction machine

#31
20130152575
2013-06-20

Hydraulic driving apparatus for working machine

#32
20130037119
2013-02-14

Valve control of pump inlet pressure with bootstrap reservoir

#33
20130036728
2013-02-14

PUMP SUCTION CHARGING SYSTEM

#34
20120305114
2012-12-06

Oil tank

#35
20120067035
2012-03-22

Universal orientation electro-hydraulic actuator

#36
20110079373
2011-04-07

Fluid cooling device with a replenishment circuit

#37
20100308542
2010-12-09

Hydraulic cylinder

#38
20100065135
2010-03-18

Controlling device for hydraulic consumers

#39
20090217983
2009-09-03

HYDRAULIC VALVE ASSEMBLY

#40
20090191068
2009-07-30

VARIABLE VOLUME RESERVOIR

#41
20090175734
2009-07-09

Power steering pump flow control

#42
20080178587
2008-07-31

Anti-cavitation manifold for drive coupled, dual motor reversible hydraulic drive winding and unwinding systems

#43
20080166212
2008-07-10

Freely rotatable closed grapple head and machine using same

#44
20080110167
2008-05-15

Combined Relief and Positive Surge Protection Device For Operating Fluid Containers That Can Be Put Under Pressure In Operating Fluid Supply Systems of Hydrodynamic Machines

#45
20080093920
2008-04-24

Hydraulic braking circuit

#46
20070169822
2007-07-26

Double-acting valve unit

#47
20070062186
2007-03-22

Auxiliary pump for hydrostatic transmission

#48
20070028968
2007-02-08

Reservoir assembly

#49
20060243336
2006-11-02

Anti-cavitation system in pipelines which avoids that the fluid reaches its vapour pressure at the output of a given contraction using a device that connects the output section of the contraction with its downstream pressure

#50
20060081129
2006-04-20

Fluid deceleration/de-aeration device

#51
20060037645
2006-02-23

Hydraulic power steering valve housing

#52
20060008356
2006-01-12

Hydraulic system, reservoir and pump suction enhancer for motor vehicle

#53
20050229594
2005-10-20

Hydraulic control system and construction machine

#54
20050092375
2005-05-05

Reservoir tank of a power steering system for a car

#55
20050039805
2005-02-24

Spool-type hydraulic directional control valve having reduced cavitation