ClassID:

140156

F02G1/0435 - CPC Classification

Classification description:

Hot gas positive-displacement engine plants of closed-cycle type the engine being operated by expansion and contraction of a mass of working gas which is heated and cooled in one of a plurality of constantly communicating expansible chambers, e.g. Stirling cycle type engines the engine being of the free piston type

Recent Application in this class:
#1
20260110277
2026-04-23

STIRLING CYCLE HEAT PUMP WITH ACTUATED REGENERATOR AND INTEGRATED DISPLACER

#2
20260092576
2026-04-02

HOT-GAS FREE-PISTON STIRLING ENGINE WITH EFFICIENT HOT AIR INLET

#3
20250277474
2025-09-04

SINGLE CYLINDER INTERNALLY HEATED STIRLING ENGINE

#4
20250067230
2025-02-27

STIRLING CYCLE MACHINE

#5
20250027461
2025-01-23

STIRLING CYCLE MACHINE

#6
20240376850
2024-11-14

FREE-PISTON STIRLING ENGINE

#7
20240337259
2024-10-10

ASYMMETRIC GAS BEARING BUSHING FOR THERMO-PUMP

#8
20240271835
2024-08-15

STIRLING ENGINE WITH NEAR ISOTHERMAL WORKING SPACES

#9
20240271588
2024-08-15

HEAT ENERGY CONVERSION DEVICE

#10
20240159201
2024-05-16

MONOLITHIC HEAT-EXCHANGER BODIES

#11
20230407812
2023-12-21

STIRLING ENGINE, AND METHOD FOR ADJUSTING SAME

#12
20230332814
2023-10-19

Method for improving gas bearing function at low thermal cooling power

#13
20230228229
2023-07-20

Constant density heat exchanger and system for energy conversion

#14
20230019495
2023-01-19

Energy conversion apparatus

#15
20230003174
2023-01-05

Stirling cycle machine

#16
20220316423
2022-10-06

Heat engine with magnetically linked pistons

#17
20220290630
2022-09-15

Monolithic heat-exchanger bodies

#18
20220213847
2022-07-07

System and apparatus for energy conversion

#19
20220195959
2022-06-23

Engine apparatus and method for operation

#20
20220186679
2022-06-16

PRESSURE BOOST SYSTEM

#21
20220177146
2022-06-09

Electric propulsion system of an aircraft

#22
20220090559
2022-03-24

Reciprocating motion engine

#23
20220034281
2022-02-03

Energy conversion apparatus

#24
20220026118
2022-01-27

Stirling cycle machine

#25
20220000672
2022-01-06

Heat-assisted pumping systems for use in negative pressure wound therapy

#26
20210381467
2021-12-09

Constant density heat exchanger and system for energy conversion

#27
20210277846
2021-09-09

Closed cycle regenerative heat engines

#28
20210190387
2021-06-24

Free piston Stirling refrigerator

#29
20210062756
2021-03-04

Monolithic heat-exchanger bodies

#30
20200370842
2020-11-26

Monolithic heat-exchanger bodies

#31
20200370509
2020-11-26

Monolithic heater bodies

#32
20200370508
2020-11-26

Monolithic combustor bodies

#33
20200370506
2020-11-26

Monolithic heater bodies

#34
20200370505
2020-11-26

Energy conversion apparatus

#35
20200370504
2020-11-26

Energy conversion apparatus and control system

#36
20200370503
2020-11-26

Constant density heat exchanger and system for energy conversion

#37
20200370446
2020-11-26

Energy conversion apparatus

#38
20200325847
2020-10-15

Stirling engine with a membrane connecting the piston to the cylinder of the Stirling engine and a method of using this Stirling engine

#39
20200263631
2020-08-20

Preventing overstroke of free-piston stirling engine from loss of load

#40
20200240358
2020-07-30

Closed cycle regenerative heat engines

#41
20200148193
2020-05-14

Computer controlled solid state switching device for electrical system in a Stirling-electric hybrid vehicle

#42
20190376468
2019-12-12

Stirling cycle machine

#43
20190331056
2019-10-31

ENERGY TRANSFER MACHINES

#44
20190226381
2019-07-25

Energy conversion device

#45
20190203660
2019-07-04

Secure control system for multistage thermo acoustic micro-CHP generator

#46
20190131849
2019-05-02

Toroidal spiral cascading of multiple heat engine stages in traveling wave thermoacoustic engines

#47
20190055898
2019-02-21

Free piston engine power plant

#48
20180363564
2018-12-20

HYBRID POWER OR THRUST GENERATOR AND VEHICLE INCLUDING SUCH A GENERATOR

#49
20180313296
2018-11-01

Four-process cycle for a Vuilleumier heat pump

#50
20180306140
2018-10-25

Attachment of cylinders in the housing of free-piston stirling machines

#51
20180291836
2018-10-11

Stirling cycle machine

#52
20180252183
2018-09-06

Stirling engine with a membrane connecting the piston to the cylinder of the Stirling engine and a method of using this Stirling engine

#53
20180179988
2018-06-28

Stirling cycle machine

#54
20180140467
2018-05-24

Heat-assisted pumping systems for use in negative pressure wound therapy

#55
20180112625
2018-04-26

Free piston stirling engine that remains stable by limiting stroke

#56
20180112624
2018-04-26

Free piston stirling engine that limits overstroke

#57
20180106241
2018-04-19

STIRLING ENGINE FOR AN EMISSION-FREE AIRCRAFT

#58
20180087473
2018-03-29

DOUBLE-ACTING FREE-PISTON-STIRLING CYCLE MACHINE WITH LINEAR GENERATOR

#59
20170030294
2017-02-02

Energy transfer machines

#60
20160298878
2016-10-13

Four-process cycle for a Vuilleumier heat pump

#61
20160222915
2016-08-04

SYSTEM AND METHOD FOR ELECTRICALLY-COUPLED THERMAL CYCLE

#62
20160215689
2016-07-28

System And Method For Electrically-Coupled Heat Engine And Thermal Cycle

#63
20160138522
2016-05-19

Automated, oscillating dual-chambered heat pump, electricity generating, and/or water heating method employing such

#64
20160131076
2016-05-12

Stirling engine

#65
20160123631
2016-05-05

Cryogenic refrigerator

#66
20160084239
2016-03-24

Heat/acoustic wave conversion component and heat/acoustic wave conversion unit

#67
20160084238
2016-03-24

Heat/acoustic wave conversion component and heat/acoustic wave conversion unit

#68
20160084237
2016-03-24

Heat/acoustic wave conversion component and heat/acoustic wave conversion unit

#69
20160025075
2016-01-28

Stirling engine for an emission-free aircraft

#70
20150377181
2015-12-31

Motor assembly

#71
20150135702
2015-05-21

Working cylinder for an energy converter

#72
20150052887
2015-02-26

Stirling cycle machines

#73
20150047336
2015-02-19

Stirling cycle machine

#74
20140230428
2014-08-21

Stirling engine with humidity control

#75
20140216026
2014-08-07

Free-piston type stirling engine

#76
20140209067
2014-07-31

System and method for electrically-coupled heat engine and thermal cycle

#77
20140165551
2014-06-19

Stirling cycle machine

#78
20130305703
2013-11-21

Integrated Heat and Stirling Engine

#79
20130220656
2013-08-29

Direct drill bit drive for tools on the basis of a heat engine

#80
20130180239
2013-07-18

Two piston, concentric cylinder, alpha free piston Stirling machine

#81
20130180238
2013-07-18

Beta Free Piston Stirling Engine In Free Casing Configuration Having Power Output Controlled By Controlling Casing Amplitude Of Reciprocation

#82
20130074490
2013-03-28

STIRLING CYCLE ENGINE

#83
20130042607
2013-02-21

Free-piston stirling machine in an opposed piston gamma configuration having improved stability, efficiency and control

#84
20130031899
2013-02-07

Stirling machine

#85
20120159942
2012-06-28

Energy transfer machines

#86
20120144821
2012-06-14

Free-piston stirling machine for extreme temperatures

#87
20120125001
2012-05-24

Modular Thermoelectric Converter

#88
20110314805
2011-12-29

HEAT ENGINE WITH REGENERATOR AND TIMED GAS EXCHANGE

#89
20110174271
2011-07-21

System and method for electrically-coupled heat engine and thermal cycle

#90
20110168467
2011-07-14

Hybrid Electric Vehicles Using a Stirling Engine

#91
20110056196
2011-03-10

Bearing support system for free-piston stirling machines

#92
20110041506
2011-02-24

Adiabatic expansion heat engine and method of operating

#93
20110041492
2011-02-24

Stirling engine with thermoelectric control

#94
20110030367
2011-02-10

Linear multi-cylinder stirling cycle machine

#95
20110012366
2011-01-20

Stirling Machine

#96
20110011079
2011-01-20

Stirling cycle machine

#97
20110005220
2011-01-13

Gamma type free-piston stirling machine configuration

#98
20100326424
2010-12-30

Residential solar thermal power plant

#99
20100186584
2010-07-29

Multicylinder free piston machine

#100
20100127506
2010-05-27

System and method for electrically-coupled thermal cycle

#101
20100115942
2010-05-13

System and method for electrically-coupled thermal cycle

#102
20100115941
2010-05-13

System and method for electrically-coupled thermal cycle

#103
20100095668
2010-04-22

Balanced multiple groupings of beta stirling machines

#104
20100083653
2010-04-08

Mass Damper

#105
20100064681
2010-03-18

Method for increasing performance of a stirling or free-piston engine

#106
20100011759
2010-01-21

DEVICE AND METHOD FOR CONVERTING ENERGY

#107
20090255249
2009-10-15

Externally heated engine

#108
20090206667
2009-08-20

Hybrid electrical power source combining stirling engine driven alternator with supplementing electrical energy storage

#109
20090193805
2009-08-06

Stirling cycle engine

#110
20090133397
2009-05-28

Free piston stirling engine

#111
20090107138
2009-04-30

In-line stirling energy system

#112
20090094977
2009-04-16

Linear free piston stirling machine

#113
20090000294
2009-01-01

Power plant with heat transformation

#114
20080314356
2008-12-25

Stirling cycle machine

#115
20080309095
2008-12-18

Electronic controller matching engine power to alternator power and maintaining engine frequency for a free-piston stirling engine driving a linear alternator

#116
20080303289
2008-12-11

Controller computing a virtual tuning capacitor for controlling a free-piston stirling engine driving a linear alternator

#117
20080295511
2008-12-04

Connection of a free-piston stirling machine and a load or prime mover permitting differing amplitudes of reciprocation

#118
20080282694
2008-11-20

Stirling engine

#119
20080276625
2008-11-13

Acoustic power transmitting unit for thermoacoustic systems

#120
20080256945
2008-10-23

Linear free piston stirling machine

#121
20080250784
2008-10-16

Multi-piece piston for a free piston machine

#122
20080203678
2008-08-28

Jointed head with temporary clamp for stirling machine

#123
20080122408
2008-05-29

Electronic controller matching engine power to alternator power and maintaining engine frequency for a free-piston stirling engine driving a linear alternator

#124
20080118375
2008-05-22

Axially Driven Piston-Cylinder Unit

#125
20080047265
2008-02-28

Linear free piston Stirling machine

#126
20070277521
2007-12-06

Stirling engine

#127
20070193266
2007-08-23

MULTI-CYLINDER FREE PISTON STIRLING ENGINE

#128
20070169476
2007-07-26

System and method for electrically-coupled thermal cycle

#129
20070151239
2007-07-05

Stirling engine

#130
20070095064
2007-05-03

Externally heated engine

#131
20060137339
2006-06-29

Stirling engine

#132
20060048510
2006-03-09

Double acting thermodynamically resonant free-piston multicylinder stirling system and method

#133
20050274123
2005-12-15

Thermoacoustic device

#134
20050189727
2005-09-01

Bellows seals for thermoacoustic devices and reciprocating machinery

#135
20050115242
2005-06-02

Stirling engine with hydraulic output

#136
20050091974
2005-05-05

Reversible heat engine

#137
20050072148
2005-04-07

Power unit with reciprocating linear movement based on stirling motor, and method used in said power plant

#138
20050060996
2005-03-24

Machine spring displacer for Stirling cycle machines

#139
20050039454
2005-02-24

Stirling engine

#140
20050028535
2005-02-10

Compliant enclosure for thermoacoustic device

#141
20050028520
2005-02-10

Free piston stirling engine control

#142
20050016171
2005-01-27

Thermoacoustic engine-generator

#143
19054410
2026-03-10

Thermo-magnetic motor

#144
14303374
2016-03-22

Directionally reversible hot air engine system