ClassID:

138828

F02B53/00 - CPC Classification

Classification description:

Internal-combustion aspects of rotary-piston or oscillating-piston engines

Sub-classes:
Recent Application in this class:
#1
20260117695
2026-04-30

EPIC Cycles for the EPIC Cycle Engine

#2
20250243759
2025-07-31

ROTATIONAL ENGINE WITH INNER AND OUTER RINGS

#3
20250198327
2025-06-19

RECIPROCATING INTERNAL COMBUSTION ENGINE

#4
20250122826
2025-04-17

ROTARY ENGINE

#5
20240337186
2024-10-10

Rotor assembly with cooling channels separated by ribs for a rotary engine

#6
20240141789
2024-05-02

Rotational engine with inner and outer rings

#7
20230383691
2023-11-30

Rotary pump

#8
20230151762
2023-05-18

Rotary engine

#9
20230053217
2023-02-16

Oblong-shaped rotor engine having high sealing performance

#10
20230046714
2023-02-16

Piston sealing mechanism for a circulating piston engine

#11
20220127997
2022-04-28

Fluid transfer apparatus

#12
20220018255
2022-01-20

Rotational engine with inner and outer rings

#13
20210231033
2021-07-29

Rotary internal combustion engine with seal lubrication

#14
20210131346
2021-05-06

Rotary internal combustion motor with spark plugs and pre-heating spark plugs

#15
20200325777
2020-10-15

Apex seal arrangement for rotary internal combustion engine

#16
20200157985
2020-05-21

Method of apex seal lubrication for a rotary internal combustion engine

#17
20200123901
2020-04-23

Six-stroke rotary-vane internal combustion engine with hermetically sealed working space

#18
20200032652
2020-01-30

Rotational displacement apparatus

#19
20200018229
2020-01-16

Internal combustion engine with a rotating piston and uni-directional rolling bear

#20
20190256217
2019-08-22

Aircraft with wheel well between heat exchangers of engine assembly

#21
20190178084
2019-06-13

Rotary energy converter with retractable barrier

#22
20190169988
2019-06-06

Stepped sealing device circumferential pumping groove

#23
20190154038
2019-05-23

Pressure changing device

#24
20180371909
2018-12-27

Rotary engine with its passive piston running at variable speed

#25
20180283175
2018-10-04

Rotary engine with oil pump

#26
20180128106
2018-05-10

Multiple axis rotary engine

#27
20180066520
2018-03-08

Rotary engine with intake and exhaust through rotor shaft

#28
20180045052
2018-02-15

Rotational displacement apparatus

#29
20180030883
2018-02-01

Compound engine assembly with common inlet

#30
20170362974
2017-12-21

Rotary internal combustion engine with seal lubrication

#31
20170356446
2017-12-14

Fluid pressure changing device

#32
20170211389
2017-07-27

Rotary piston and cylinder devices

#33
20170211388
2017-07-27

Rotary piston and cylinder device

#34
20170211387
2017-07-27

Rotary piston and cylinder device

#35
20170167368
2017-06-15

Rotary Engine Rotor

#36
20170159560
2017-06-08

Hypocycloidal methods and designs for increasing efficiency in engines

#37
20170044899
2017-02-16

Motor/engine with rotating pistons

#38
20160356213
2016-12-08

Rotary internal combustion engine with rotary valve

#39
20160348678
2016-12-01

Fluid pressure changing device

#40
20160341042
2016-11-24

Rotary engine with cam-guided rotor

#41
20160326875
2016-11-10

Rotary energy converter with retractable barrier

#42
20160312611
2016-10-27

Multiple vane roto-dynamic variable displacement kinetic system

#43
20160290221
2016-10-06

Double bar single wheel rotary combustion engine and the components thereof

#44
20160281595
2016-09-29

Planetary rotary engine with rotary ring valves

#45
20160245154
2016-08-25

Compound engine assembly with common inlet

#46
20160160751
2016-06-09

Rotary internal combustion engine

#47
20160108804
2016-04-21

Oscillating rotary engine

#48
20160061037
2016-03-03

Rotor assembly for rotary internal combustion engine

#49
20150337726
2015-11-26

Rotary internal combustion engine with cooled insert

#50
20150315913
2015-11-05

Rotary machine

#51
20150000245
2015-01-01

Hybrid electric rotary engine

#52
20140360457
2014-12-11

IDAR-ACE INVERSE DISPLACEMENT ASYMMETRIC ROTATING ALTERNATIVE CORE ENGINE

#53
20140348678
2014-11-27

Heat engine, method of control of the rotational speed in a heat engine, and method of design of a cam profile for a heat engine

#54
20140345562
2014-11-27

Single-stage and three-stage internal combusion rotary engines

#55
20140318123
2014-10-30

Rotary internal combustion engine

#56
20140308147
2014-10-16

Gerotor apparatus for a quasi-isothermal Brayton cycle engine

#57
20140271308
2014-09-18

Gerotor rotary Stirling cycle engine

#58
20140261324
2014-09-18

Systems and methods for controlling compression in an engine, compressor, or pump

#59
20140261289
2014-09-18

Rotary internal combustion engine

#60
20140245988
2014-09-04

Rotary internal combustion engine with pilot subchamber

#61
20140238337
2014-08-28

Internal combustion engine

#62
20140230776
2014-08-21

Rotary engine comprising a ceramic material

#63
20140182527
2014-07-03

Combustion engine

#64
20140102402
2014-04-17

Rotary energy converter with retractable barrier

#65
20140041640
2014-02-13

Vacuum port having a flow disruptor

#66
20140026845
2014-01-30

Direct circular rotary internal-combustion engine with toroidal expansion chamber and rotor without moving parts

#67
20140020651
2014-01-23

Orbiting planetary gearing system and internal combustion engine employing the same

#68
20130333553
2013-12-19

3-stroke/6-stroke rocket jet engine

#69
20130263817
2013-10-10

Double bars and single wheel rotary combustion engine

#70
20130255621
2013-10-03

Rotary internal combustion diesel engine

#71
20130239920
2013-09-19

ROTARY ENERGY TRANSDUCER

#72
20130228150
2013-09-05

Rotary, Internal Combustion Engine

#73
20130199491
2013-08-08

Rotary internal combustion engine with cooled insert

#74
20130183183
2013-07-18

Rotary engine

#75
20130089447
2013-04-11

Planetary rotary type fluid motor or engine and compressor or pump

#76
20130087118
2013-04-11

Rotary energy converter with retractable barrier

#77
20130084196
2013-04-04

Aggregate, in particular a hybrid engine, electrical power generator or compressor

#78
20130081591
2013-04-04

Rotary internal combustion engine

#79
20130032121
2013-02-07

Rotary engine

#80
20130028774
2013-01-31

Rotary internal combustion engine with phasing gear

#81
20120294747
2012-11-22

Cycloid rotor engine

#82
20120285416
2012-11-15

ROTARY ENGINE

#83
20120266841
2012-10-25

RICE, RICG, & RC

#84
20120251374
2012-10-04

Multiple rotor fluid transfer engine

#85
20120195782
2012-08-02

SYSTEM FOR CONSTRUCTION OF COMPRESSORS AND ROTARY ENGINE, WITH VOLUMETRIC DISPLACEMENT AND COMPRESSION RATE DYNAMICALLY VARIABLE

#86
20120139260
2012-06-07

Power supply systems

#87
20120097138
2012-04-26

ENGINE ASSEMBLY INCLUDING ROTARY ENGINE PROVIDING EXHAUST GAS RECIRCULATION TO PRIMARY ENGINE

#88
20110315125
2011-12-29

Vacuum port having a flow disruptor

#89
20110271830
2011-11-10

Drive mechanism for an oscillating piston rotor

#90
20110259295
2011-10-27

High performance continuous internal combustion engine

#91
20110214638
2011-09-08

High leverage rotary internal combustion engine

#92
20110162617
2011-07-07

Dual-rotor engine

#93
20110048370
2011-03-03

REVOLVING PISTON INTERNAL COMBUSTION ENGINE

#94
20110023815
2011-02-03

Rotary piston engine with operationally adjustable compression

#95
20100326753
2010-12-30

Rotary piston internal combustion engine power unit

#96
20100269782
2010-10-28

Augmenter for compound compression engine

#97
20100266435
2010-10-21

Gerotor apparatus for a quasi-isothermal Brayton cycle engine

#98
20100263622
2010-10-21

ROTARY ENGINE

#99
20100263616
2010-10-21

Internal combustion two stroke oscillating engine

#100
20100170469
2010-07-08

Rotary energy converter with retractable barrier

#101
20100095926
2010-04-22

ORBITAL ENGINE

#102
20100021331
2010-01-28

INTERNAL COMBUSTION ENGINE

#103
20090217903
2009-09-03

Rotary internal combustion engine

#104
20090214371
2009-08-27

Multiple rotor fluid transfer engine

#105
20090199812
2009-08-13

Structure of the rotary engine

#106
20090148327
2009-06-11

Rotary positive displacement combustor engine

#107
20090133665
2009-05-28

Revolving piston internal combustion engine

#108
20080302328
2008-12-11

Reciprocating and rotary piston engine

#109
20080265145
2008-10-30

Optical element and optical measurement device using the optical element

#110
20080202466
2008-08-28

Rotary internal combustion engine and rotary compressor

#111
20080135013
2008-06-12

Paddling blades engine

#112
20070277671
2007-12-06

Plastic shoes for compressors

#113
20070272200
2007-11-29

Independent combustion chamber-type internal combustion engine

#114
20070256660
2007-11-08

Rotary engine

#115
20070199537
2007-08-30

Internal Combustion Engine and Method

#116
20070175202
2007-08-02

Axial flow positive displacement worm compressor

#117
20070137174
2007-06-21

Axial flow positive displacement worm gas generator

#118
20070130910
2007-06-14

Rotary engine

#119
20070119408
2007-05-31

Rotary machine with major and satellite rotors

#120
20070023001
2007-02-01

Balanced rotary internal combustion engine or cycling volume machine

#121
20060231062
2006-10-19

Orbital engine

#122
20060204392
2006-09-14

Rotary machine

#123
20060201474
2006-09-14

Dual piston rotary engine

#124
20060196465
2006-09-07

Rotary engine for motor vehicles with very low consumption and pollution rate

#125
20060193739
2006-08-31

Retro mechanical post mechanical and bi-mechanical traction engines

#126
20060150947
2006-07-13

Revolving piston internal combustion engine

#127
20060127264
2006-06-15

Multi-vane device

#128
20060118078
2006-06-08

Rotationally induced variable volume chambers

#129
20060102139
2006-05-18

Rotary internal combustion engine

#130
20060101800
2006-05-18

Gas turbine engine system

#131
20060073059
2006-04-06

Poly-inductive machines and differential turbines

#132
20060024186
2006-02-02

Rotary machine having two rotors

#133
20050284439
2005-12-29

Asymmetric complete expansion rotary engine cycle

#134
20050269886
2005-12-08

Alternators and improvements to rotary internal combustion engines

#135
20050263129
2005-12-01

Orbital engine

#136
20050252482
2005-11-17

Electromagnetic array assembly incorporated into an internal combustion engine for generating an electrical current

#137
20050247282
2005-11-10

Rotary combustion engine

#138
20050233853
2005-10-20

Cometary gears output rotary engine

#139
20050172622
2005-08-11

Scroll-type expander having heating structure and scroll-type heat exchange system employing the expander

#140
20050161016
2005-07-28

Rotary internal combustion engine with adjustable compression stroke

#141
20050139189
2005-06-30

Adapter, to interface counter-rotating torque producing engine mechanisms with stationary support accessories, for torque free output and torque sensitive environments

#142
20050115536
2005-06-02

Combustion engine

#143
20050098143
2005-05-12

Two-cycle engine for counter-rotation especially for aviation applications

#144
20050087156
2005-04-28

Lever-mechanism motor or pump

#145
20050076884
2005-04-14

Rotary internal-combustion engine

#146
20050076641
2005-04-14

Rotary fluid machinery

#147
20050063855
2005-03-24

Rotary fluid machinery

#148
20050060998
2005-03-24

Rotary motion machine

#149
20050045841
2005-03-03

Transverse disc motor

#150
20050031480
2005-02-10

Rotary fluid machine

#151
20050031479
2005-02-10

Rotary fluid machine

#152
20050028758
2005-02-10

Cylinder block for an internal combustion engine having a locally thickened end wall

#153
20050019161
2005-01-27

Rotary fluid machine

#154
20050016493
2005-01-27

Toroidal internal combustion engine

#155
20050005898
2005-01-13

Multi-stage modular rotary internal combustion engine

#156
20050000483
2005-01-06

Balanced rotary internal combustion engine or cycling volume machine

#157
18470791
2024-10-08

Side plate for rotary engine

#158
17894010
2024-02-27

Rotary internal combustion engine

#159
16840186
2023-02-21

Vane drive rotary combustion engine

#160
16831023
2024-12-17

Rotary combustion engine

#161
16668530
2021-10-12

Rotary internal combustion engine

#162
14078072
2017-02-21

Methods and designs for increasing efficiency in engines

#163
13940858
2015-03-17

Pistonless rotary engine with multi-vane compressor and combustion disk

#164
13374644
2015-01-20

Rotary piston engine