ClassID:

142931

F04B35/00 - CPC Classification

Classification description:

Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for

Sub-classes:
Recent Application in this class:
#1
20260078751
2026-03-19

GAS COMPRESSOR AND SYSTEM AND METHOD FOR GAS COMPRESSING

#2
20260022691
2026-01-22

COMPACT AIR COMPRESSOR

#3
20250382950
2025-12-18

A BISTABLE COMPRESSOR DRIVEN WITH SHAPE MEMORY ALLOYS FOR REFRIGERATOR

#4
20250327512
2025-10-23

POWERTRAIN SYSTEM

#5
20250327445
2025-10-23

SYSTEMS AND METHODS FOR A GAS-DRIVEN COMPRESSOR

#6
20250264094
2025-08-21

AIR COMPRESSOR

#7
20250154943
2025-05-15

Air Pump Device with Accessories Storage Function

#8
20250027488
2025-01-23

AIR COMPRESSOR

#9
20240418161
2024-12-19

GAS COMPRESSOR AND SYSTEM AND METHOD FOR GAS COMPRESSING

#10
20240280093
2024-08-22

COMPRESSION APPARATUS

#11
20230407856
2023-12-21

LONG STROKE PARALLEL PUMP

#12
20230287889
2023-09-14

Unified air compressor

#13
20230131498
2023-04-27

Water pump and pumping device

#14
20230065599
2023-03-02

AIR PUMPING DEVICE

#15
20230003205
2023-01-05

Plasma compression driver

#16
20220325707
2022-10-13

Unified air compressor

#17
20220268273
2022-08-25

Gas compressor and system and method for gas compressing

#18
20220145845
2022-05-12

Pumped-storage power plant, method for operating a pumped-storage power plant, and pumped-storage system

#19
20210317825
2021-10-14

Gas compressor and system and method for gas compressing

#20
20210267402
2021-09-02

Automatically opening and closing inflatable holiday ornament

#21
20210108804
2021-04-15

THERMODYNAMIC CO2 BOILER AND THERMAL COMPRESSOR

#22
20200400136
2020-12-24

Venturi pump systems and methods to use same

#23
20200240402
2020-07-30

Cylindrical magnetic coupling with alternating polarity

#24
20200240394
2020-07-30

Wind-powered energy generator system

#25
20200208620
2020-07-02

Connection structure for motor of air compressor

#26
20200124040
2020-04-23

Gas compressor and system and method for gas compressing

#27
20200049136
2020-02-13

Dual turbine direct drive pump

#28
20190203744
2019-07-04

Reduced noise reciprocating pneumatic motor

#29
20190145395
2019-05-16

Method of Construction for High Cycle Fatigue Resistant Pressure Vessels in Hydrogen Service

#30
20190054398
2019-02-21

Pump having an automated gas removal and fluid recovery system and method using a gas removal reservoir having an internal partition

#31
20190032652
2019-01-31

Gas compressor and system and method for gas compressing

#32
20180313232
2018-11-01

Waste heat recovery simple cycle system and method

#33
20180135591
2018-05-17

Wave energy converter with a differential cylinder

#34
20180073497
2018-03-15

Gas compressor and system and method for gas compressing

#35
20180030978
2018-02-01

Gas compressor and system and method for gas compressing

#36
20170356436
2017-12-14

Pump assembly

#37
20170343445
2017-11-30

Torque estimating device of gas compressor

#38
20170321670
2017-11-09

Linear compressor

#39
20170298925
2017-10-19

Rod pumping unit and method of operation

#40
20170073605
2017-03-16

Coating composition for lubricating coating film

#41
20170009766
2017-01-12

Rigid piston-actuator-assembly supported for performing a pendulum-type tolerance compensation motion

#42
20160341187
2016-11-24

RECIPROCATING MOTOR-COMPRESSOR WITH INTEGRATED STIRLING ENGINE

#43
20160305410
2016-10-20

High-pressure to low-pressure changeover valve for a positive displacement pump

#44
20160263949
2016-09-15

Automatic truck assembly tire inflator system with dual pump

#45
20160237997
2016-08-18

Miniature pump

#46
20160186738
2016-06-30

Reciprocating Compressor or Pump and a Portable Tool Powering System Including a Reciprocating Compressor

#47
20160102661
2016-04-14

Air compressor

#48
20160097383
2016-04-07

Air compressor

#49
20160084244
2016-03-24

Negative pressure pump and cylinder head cover

#50
20160013711
2016-01-14

Reciprocating electric motor

#51
20150211440
2015-07-30

Device for compressing a gaseous fluid

#52
20140377086
2014-12-25

Air-driven pump system

#53
20140369857
2014-12-18

DEVICE FOR IMPROVED HEAT TRANSFER WITHIN A COMPRESSION AND/OR EXPANSION SYSTEM

#54
20140348670
2014-11-27

SMART HYBRID ACTUATOR

#55
20140299079
2014-10-09

Device for delivering compressed air for pneumatically operated equipment in motor vehicles

#56
20140277672
2014-09-18

Apparatus and method for the remote monitoring, viewing and control of a semiconductor process tool

#57
20140271265
2014-09-18

Pump system and method having a quick change motor drive

#58
20140271252
2014-09-18

Pump having an automated gas removal and fluid recovery system and method

#59
20140219833
2014-08-07

Compressor

#60
20140093399
2014-04-03

Turbine-Driven Reciprocating Compressor and Method

#61
20140042832
2014-02-13

SALIENT-POLE TYPE LINEAR MOTOR AND RECIPROCAL DOUBLE PISTON COMPRESSOR WITH SALIENT-POLE TYPE LINEAR MOTOR

#62
20140037428
2014-02-06

Fluid stream driven wobble plate motor

#63
20130323102
2013-12-05

Gaseous fluid compression device

#64
20130272905
2013-10-17

DEVICE FOR TRANSFERRING ENERGY BETWEEN TWO FLUIDS

#65
20130011277
2013-01-10

Traffic powered renewable energy system

#66
20120169184
2012-07-05

Electroactive polymer manufacturing

#67
20120083730
2012-04-05

Variable Volume, Shape Memory Actuated Insulin Dispensing Pump

#68
20110236224
2011-09-29

Air-driven pump system

#69
20110187123
2011-08-04

Portable integrated power supply and HVAC unit

#70
20110155307
2011-06-30

ELECTROACTIVE POLYMER MANUFACTURING

#71
20110154641
2011-06-30

Electroactive polymer manufacturing

#72
20110148111
2011-06-23

Turbine with power conversion units with coupling means

#73
20110138838
2011-06-16

Device for varying the pressure of a pneumatic fluid through displacement of liquid droplets and heat pump using such a device

#74
20110025170
2011-02-03

Electroactive polymer device

#75
20100263181
2010-10-21

Method of fabricating an electroactive polymer transducer

#76
20100202906
2010-08-12

Safety clamp for walking beam compressor

#77
20100177519
2010-07-15

ELECTRO-HYDRODYNAMIC GAS FLOW LED COOLING SYSTEM

#78
20100145272
2010-06-10

Wax micro actuator

#79
20100043416
2010-02-25

Wobble plate motor

#80
20100026143
2010-02-04

Monolithic electroactive polymers

#81
20090311112
2009-12-17

Air supply apparatus

#82
20090283191
2009-11-19

Device for generating tire air pressure

#83
20090257902
2009-10-15

Multi-stage compressor system

#84
20090249826
2009-10-08

Integrated compressor/expansion engine

#85
20090246049
2009-10-01

COATED CYLINDER FOR WALKING BEAM COMPRESSOR

#86
20090246037
2009-10-01

Safety clamp for walking beam compressor

#87
20090228149
2009-09-10

Environmental control and power system

#88
20090184606
2009-07-23

ROLLED ELECTROACTIVE POLYMERS

#89
20090163869
2009-06-25

Variable volume, shape memory actuated insulin dispensing pump

#90
20090126562
2009-05-21

Combined piston-expander compressor

#91
20090112165
2009-04-30

Variable volume, shape memory actuated insulin dispensing pump

#92
20090112156
2009-04-30

Variable volume, shape memory actuated insulin dispensing pump

#93
20090105649
2009-04-23

Variable volume, shape memory actuated insulin dispensing pump

#94
20090105648
2009-04-23

Variable volume, shape memory actuated insulin dispensing pump

#95
20090065177
2009-03-12

Cooling with microwave excited micro-plasma and ions

#96
20090047162
2009-02-19

Compressor and Power Transmission Device

#97
20080232979
2008-09-25

Compressor

#98
20080216472
2008-09-11

Buoyancy engine apparatus

#99
20080191585
2008-08-14

Electroactive polymer electrodes

#100
20080161974
2008-07-03

Environmental control and power system

#101
20080136052
2008-06-12

Electroactive polymer manufacturing

#102
20080085197
2008-04-10

Magnetostriction air pump

#103
20080083219
2008-04-10

Fluid displacement based generator & method of using the same

#104
20080080035
2008-04-03

Actuators, pumps, and optical scanners

#105
20080044230
2008-02-21

Transportable wave generating module and watercraft

#106
20080022517
2008-01-31

Methods for fabricating an electroactive polymer device

#107
20080006040
2008-01-10

Heat-activated heat-pump systems including integrated expander/compressor and regenerator

#108
20080003119
2008-01-03

Radial type reciprocating compressor and portable tool powering system with flexing connecting rod arrangement

#109
20080003112
2008-01-03

Radial type reciprocating compressor and portable tool powering system with cylinder liner, valve and annular manifold arrangement

#110
20070292282
2007-12-20

RECIPROCATING COMPRESSOR OR PUMP AND A PORTABLE TOOL POWERING SYSTEM INCLUDING A RECIPROCATING COMPRESSOR

#111
20070261417
2007-11-15

Cable drive mechanism for self tuning refrigeration gas expander

#112
20070246282
2007-10-25

Fluid device for recovery of the kinetic energy of a vehicle

#113
20070235252
2007-10-11

Acoustic fluid machine

#114
20070183912
2007-08-09

Compressor

#115
20070183906
2007-08-09

Buoyancy engine apparatus

#116
20070164641
2007-07-19

Electroactive polymer devices for moving fluid

#117
20060283534
2006-12-21

Tire pump

#118
20060254286
2006-11-16

Solid state cryocooler

#119
20060239832
2006-10-26

Compressed air power generating systems using a rotary gravity compressor

#120
20060239827
2006-10-26

Torque drive mechanism for gas compressor

#121
20060238079
2006-10-26

Electroactive polymers

#122
20060238066
2006-10-26

Electroactive polymer generators

#123
20060197412
2006-09-07

Piezo electric pump and device with such pump

#124
20060172830
2006-08-03

Power transmission device, method for manufacturing the same and compressor

#125
20060169441
2006-08-03

Electro-hydrodynamic gas flow cooling system

#126
20060158065
2006-07-20

Electroactive polymer devices for moving fluid

#127
20060113880
2006-06-01

Electroactive polymers

#128
20060113878
2006-06-01

Electroactive polymers

#129
20060051232
2006-03-09

Piezo-electric compressor with displacement amplifier

#130
20060046857
2006-03-02

Coupling member

#131
20050287012
2005-12-29

Vacuum micropump and gauge

#132
20050271524
2005-12-08

Buoyancy and weight transducer system

#133
20050238503
2005-10-27

Variable volume, shape memory actuated insulin dispensing pump

#134
20050188713
2005-09-01

Fluid machine for gas compression refrigerating system

#135
20050180863
2005-08-18

Pressure storage structure for use in air

#136
20050144948
2005-07-07

Individual cogeneration plant and local network

#137
20050042112
2005-02-24

Piston type gas compressor, and piston type gas pressure drive rotation device

#138
15193133
2017-10-24

Intermittent start compressor

#139
13721541
2016-06-28

Intermittent start compressor