ClassID:

146173

F15B21/14 - page 2 - 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 Energy-recuperation means

Recent Application in this class:
#301
20140020375
2014-01-23

Hydraulic working machine

#302
20140020368
2014-01-23

Hydraulic circuit for progressive engagement of a hydraulic device

#303
20140013753
2014-01-16

Slewing type working machine

#304
20140004998
2014-01-02

Hydraulic launch assist system

#305
20140000250
2014-01-02

Lifting system and lifting method for jib of an operating machine, and an operating machine thereof

#306
20130340418
2013-12-26

Energy Storage Cylinder and Control System for a Moving Structural Member

#307
20130333378
2013-12-19

Hydraulic system and control logic for collection and recovery of energy in a double actuator arrangement

#308
20130330160
2013-12-12

Construction machine with working attachment

#309
20130318971
2013-12-05

Power source apparatus and hybrid construction machine equipped with same

#310
20130318955
2013-12-05

Electro-hydraulic system for recovering and reusing potential energy

#311
20130283776
2013-10-31

Energy-recovery generation system for handling and carrying electric vehicle

#312
20130280111
2013-10-24

Propel circuit and work circuit combinations for a work machine

#313
20130236272
2013-09-12

Hydraulic system and crane

#314
20130232963
2013-09-12

Digital hydraulic transformer and method for recovering energy and leveling hydraulic system loads

#315
20130199168
2013-08-08

Apparatus and method for recuperation of hydraulic energy

#316
20130195681
2013-08-01

Method for obtaining a full range of lift speeds using a single input

#317
20130180247
2013-07-18

Electro-hydraulic drive system for a work machine

#318
20130160440
2013-06-27

Hydraulic System with Pilot Circuit Power Reclamation

#319
20130152565
2013-06-20

HYDRAULIC SYSTEM HAVING ENERGY RECOVERY

#320
20130126023
2013-05-23

HYDRAULIC SYSTEM WITH ENERGY REGENERATION

#321
20130125540
2013-05-23

Apparatus, method and computer program product for moving cargo, and a kit and method for upgrading an apparatus for moving cargo

#322
20130125536
2013-05-23

System and method for energy recovery

#323
20130098023
2013-04-25

Energy recovery control circuit and work machine

#324
20130081386
2013-04-04

System and method for controlling charging of an accumulator in an electro-hydraulic system

#325
20130004280
2013-01-03

Hydraulic control system having swing motor energy recovery

#326
20130004278
2013-01-03

Hydraulic control system having swing energy recovery

#327
20130000291
2013-01-03

Hydraulic circuit having energy storage and reuse

#328
20130000290
2013-01-03

Energy recovery system having accumulator and variable relief

#329
20130000289
2013-01-03

Hydraulic control system having swing motor energy recovery

#330
20130000094
2013-01-03

Hydraulic control system having energy recovery kit

#331
20120317966
2012-12-20

Hydraulic arrangement

#332
20120312007
2012-12-13

Control system for hybrid construction machine

#333
20120299310
2012-11-29

Systems and methods for energy storage and recovery using rapid isothermal gas expansion and compression

#334
20120260644
2012-10-18

Engine augmentation of hydraulic control system

#335
20120245806
2012-09-27

Control system for hybrid construction machine

#336
20120240567
2012-09-27

Hydraulic transmission device allowing energy recovery

#337
20120233998
2012-09-20

Control system for hybrid construction machine

#338
20120198827
2012-08-09

Hydraulic drive system

#339
20120192553
2012-08-02

Energy-efficient hydraulic drive for the linear movement of a mass

#340
20120180470
2012-07-19

Hydraulic system for energy regeneration in a work machine such as a wheel loader

#341
20120151904
2012-06-21

Hydraulic control system having energy recovery

#342
20120134848
2012-05-31

HYDRAULIC FAN CIRCUIT HAVING ENERGY RECOVERY

#343
20120067432
2012-03-22

Hydraulic system and a working machine comprising such a hydraulic system

#344
20120031089
2012-02-09

Axial bearing for use in a hydraulic device, a hydraulic transformer and a vehicle with a hydraulic drive system

#345
20120023924
2012-02-02

VARIABLE HYDRAULIC SYSTEM

#346
20120023920
2012-02-02

Device for recovering energy

#347
20120003069
2012-01-05

Hydraulic drive apparatus for construction equipment

#348
20110280663
2011-11-17

Fish passage apparatus with flow restriction and method

#349
20110280662
2011-11-17

Parallel fish passage apparatuses with hydroelectric power generator and method

#350
20110280661
2011-11-17

Fish passage apparatus with variable inlets and method

#351
20110278068
2011-11-17

Regenerative drive mechanism for hydraulic feed cylinders in hydrostatic or hydraulic circuits

#352
20110270498
2011-11-03

Control device for hybrid construction machine

#353
20110265467
2011-11-03

Control device for hybrid construction machine

#354
20110259187
2011-10-27

Digital hydraulic system

#355
20110252777
2011-10-20

Systems and methods for improving drivetrain efficiency for compressed gas energy storage

#356
20110240146
2011-10-06

Control device for hybrid construction machine

#357
20110197576
2011-08-18

Hydraulic control system in working machine

#358
20110192157
2011-08-11

Cylinder device

#359
20110167813
2011-07-14

Systems and methods for energy storage and recovery using rapid isothermal gas expansion and compression

#360
20110127115
2011-06-02

DRIVE SYSTEMS

#361
20110082610
2011-04-07

Controller of hybrid construction machine

#362
20110072810
2011-03-31

Controller of hybrid construction machine

#363
20110071738
2011-03-24

Hybrid construction machine

#364
20110061375
2011-03-17

Hydraulic drive system

#365
20110060491
2011-03-10

Device for controlling hybrid construction machine

#366
20110035102
2011-02-10

Control device for hybrid construction machine

#367
20110000202
2011-01-06

Active hydraulic regeneration for motion control

#368
20100242719
2010-09-30

Hydraulic load control valve device

#369
20100236234
2010-09-23

Hydraulic valve device

#370
20100229544
2010-09-16

Systems and methods for improving drivetrain efficiency for compressed gas energy storage

#371
20100162706
2010-07-01

Drive for rotating structure

#372
20100154399
2010-06-24

Method for recuperating potential energy during a lowering operation of a load

#373
20100139277
2010-06-10

Systems and methods for energy storage and recovery using rapid isothermal gas expansion and compression

#374
20100122528
2010-05-20

Hydraulic system having regeneration and supplemental flow

#375
20100107620
2010-05-06

Rotary flow control valve with energy recovery

#376
20100089063
2010-04-15

Systems and methods for energy storage and recovery using rapid isothermal gas expansion and compression

#377
20100089049
2010-04-15

Hydraulic drive device and working machine with the same

#378
20100089045
2010-04-15

Hydraulic control circuit for construction machine

#379
20100071357
2010-03-25

Auxiliary pump system for hybrid powertrains

#380
20100031649
2010-02-11

Hydraulic drive device for hydraulic excavator

#381
20100000209
2010-01-07

Hydraulic control system in working machine ( as amended

#382
20090306832
2009-12-10

Control method of a hydraulic machine for saving energy or improving efficiency

#383
20090288408
2009-11-26

HYDRAULIC CIRCUIT, ENERGY RECOVERY DEVICE, AND HYDRAULIC CIRCUIT FOR WORK MACHINE

#384
20090287373
2009-11-19

Control system for a work machine and method for controlling a hydraulic cylinder

#385
20090277168
2009-11-12

Hybrid system for a powertrain and hydraulic system

#386
20090266067
2009-10-29

Arrangement for operating a hydraulic device

#387
20090236906
2009-09-24

Hydraulic Regenerative Braking System For A Vehicle

#388
20090217653
2009-09-03

Control system for recovering swing motor kinetic energy

#389
20090210120
2009-08-20

Hydrostatic regenerative drive system

#390
20090202370
2009-08-13

Hydraulic system

#391
20090193801
2009-08-06

Hydraulic drive system

#392
20090178399
2009-07-16

Digital hydraulic system

#393
20090173923
2009-07-09

Lifting system

#394
20090165451
2009-07-02

HYDRAULIC FLUID ACCUMULATOR WITH INTEGRATED HIGH-PRESSURE AND LOW-PRESSURE CHAMBER

#395
20090139222
2009-06-04

System for storing, delivering and recovering energy

#396
20090100830
2009-04-23

Hydraulic drive system

#397
20090084102
2009-04-02

Hydrostatic drive

#398
20090077837
2009-03-26

Work machine

#399
20090071139
2009-03-19

Excavator and a machine for material transfer

#400
20090036264
2009-02-05

Work machine

#401
20090025379
2009-01-29

SYSTEM FOR RECOVERING ENERGY FROM A HYDRAULIC LIFT

#402
20090000290
2009-01-01

Energy recovery system

#403
20080317574
2008-12-25

Swing Drive Device and Work Machine

#404
20080314038
2008-12-25

Swing drive device and work machine

#405
20080302099
2008-12-11

Method for controlling a hydraulic cylinder and control system for a work machine

#406
20080295505
2008-12-04

Method for springing a movement of an implement of a work machine

#407
20080295504
2008-12-04

Method for controlling a hydraulic cylinder in a work machine

#408
20080294316
2008-11-27

Method for controlling a hydraulic cylinder in a work machine and control system for a work machine

#409
20080292474
2008-11-27

Method for controlling a hydraulic machine in a control system

#410
20080276606
2008-11-13

Hydraulic drive system with exiting from pumping and motoring

#411
20080250781
2008-10-16

Method of controlling a hydrostatic drive

#412
20080223205
2008-09-18

Hydraulic drive apparatus

#413
20080223028
2008-09-18

Pump flow control of hydraulic circuit and associated method

#414
20080210485
2008-09-04

Control system for frame-steering of a vehicle and method for controlling two steering cylinders in a frame-steered vehicle

#415
20080155975
2008-07-03

Hydraulic system with energy recovery

#416
20080152513
2008-06-26

HYDRAULIC CIRCUIT ARRANGEMENT WITH RECOVERY OF ENERGY

#417
20080141668
2008-06-19

Electrohydraulic drawing press cushion drive

#418
20080128214
2008-06-05

Energy recovering method and system in hydraulic lift device of battery operated industrial trucks

#419
20080115490
2008-05-22

Hydraulic cylinder system

#420
20080110166
2008-05-15

Energy recovery and reuse techniques for a hydraulic system

#421
20080110165
2008-05-15

Energy recovery and reuse methods for a hydraulic system

#422
20080104955
2008-05-08

Bidirectional hydraulic transformer

#423
20080104952
2008-05-08

Hydraulic circuit

#424
20080072589
2008-03-27

Hydraulic drive

#425
20080072588
2008-03-27

Control system for hydraulic construction machine

#426
20070278048
2007-12-06

Energy recovering system of hydraulic lift device for battery operated industrial trucks

#427
20070278030
2007-12-06

Machine, in particular construction machine

#428
20070240413
2007-10-18

Fluid circuit with multiple flows from a series valve

#429
20070227136
2007-10-04

Hydraulic metering mode transitioning technique for a velocity based control system

#430
20070227133
2007-10-04

Cylinder with internal pushrod

#431
20070199315
2007-08-30

Apparatus and methods for actuation

#432
20070186548
2007-08-16

Hydraulic regeneration system

#433
20070175209
2007-08-02

Hydraulic system having in-sump energy recovery device

#434
20070166168
2007-07-19

CONTROL SYSTEM FOR A WORK MACHINE AND METHOD FOR CONTROLLING A HYDRAULIC CYLINDER IN A WORK MACHINE

#435
20070120662
2007-05-31

Digital Hydraulic system

#436
20070079609
2007-04-12

Hybrid hydraulic system and work machine using same

#437
20070074515
2007-04-05

Waste energy recovery method and waste energy recovery system

#438
20070074509
2007-04-05

Hydraulic system for recovering potential energy

#439
20060272324
2006-12-07

Method and device for the pneumatic operation of a tool

#440
20060230752
2006-10-19

Hydraulic drive control device

#441
20060201146
2006-09-14

Hydraulic control system with cross function regeneration

#442
20060185355
2006-08-24

Hydraulic gravitational load energy recuperation

#443
20060174554
2006-08-10

Potential energy storage system

#444
20060156713
2006-07-20

Hydraulic drive system

#445
20060126269
2006-06-15

Double layer capacitor

#446
20060125316
2006-06-15

Anti-lock brake system for vehicles

#447
20060090949
2006-05-04

Hydrostatic drive system

#448
20060090462
2006-05-04

Energy regeneration system for working machinery

#449
20060090461
2006-05-04

Energy regeneration system for machines

#450
20060075749
2006-04-13

Hydraulic energy intensifier

#451
20060070793
2006-04-06

Hydraulic system and forklift with the same

#452
20060055238
2006-03-16

Hydraulic regenerative braking system for a vehicle

#453
20060054015
2006-03-16

Hydraulic control in a hydraulic system, especially for the operation of scrap cutters

#454
20060053666
2006-03-16

Excavator and a machine for material transfer

#455
20060011370
2006-01-19

Damping device

#456
20050279086
2005-12-22

System for storing, delivering and recovering energy

#457
20050246082
2005-11-03

Working machine driving unit

#458
20050232787
2005-10-20

System and method of providing hydraulic pressure for mechanical work from an engine lubricating system

#459
20050194225
2005-09-08

Air cylinder with high frequency shock absorber and accelerator

#460
20050144938
2005-07-07

Hydraulic drive unit

#461
20050126383
2005-06-16

Fluid circuit system

#462
20050103007
2005-05-19

Power system and work machine using same

#463
20050103006
2005-05-19

Power system and work machine using same

#464
20050072954
2005-04-07

Hydraulic valve arrangement

#465
20050042121
2005-02-24

Hydraulic equipment

#466
20050016169
2005-01-27

Mobile handling device

#467
20050016168
2005-01-27

Hydraulic drive system and improved control valve assembly therefor

#468
20050016167
2005-01-27

Hydraulic drive system and improved filter sub-system therefor

#469
18988992
2026-01-20

Energy recovery system and control strategy for hydraulic excavator boom

#470
18769110
2025-11-11

Construction machine and hydraulic system thereof

#471
17974110
2023-06-06

Potential energy storage and control system for a hydraulically actuated element

#472
16983504
2023-08-22

Hydraulic pump with alternate power system

#473
16719078
2020-11-17

Hydraulic energy collection system