F02G2244/50 - CPC Classification Index

ClassID:

140210 ⎘

F02G2244/50 - CPC Classification

Classification description:

Machines having two pistons Double acting piston machines

Sub-classes:

F02G2244/52 » having interconnecting adjacent cylinders constituting a single system, e.g. "Rinia" engines 29
F02G2244/54 » having two-cylinder twin systems, with compression in one cylinder and expansion in the other cylinder for each of the twin systems, e.g. "Finkelstein" engines 13

Recent Application in this class:

20260078714

2026-03-19

Pneumatically Actuated Energy Generator

20250172107

2025-05-29

SLOW ACTUATION MECHANOLIQUID PISTON HEAT PUMP

20240418136

2024-12-19

ENERGY HARVESTING HEAT ENGINE

20240271588

2024-08-15

HEAT ENERGY CONVERSION DEVICE

20230228229

2023-07-20

Constant density heat exchanger and system for energy conversion

20230019495

2023-01-19

Energy conversion apparatus

20220290630

2022-09-15

Monolithic heat-exchanger bodies

20220195959

2022-06-23

Engine apparatus and method for operation

20220034281

2022-02-03

Energy conversion apparatus

#10

20210381467

2021-12-09

Constant density heat exchanger and system for energy conversion

#11

20210062756

2021-03-04

Monolithic heat-exchanger bodies

#12

20200370509

2020-11-26

Monolithic heater bodies

#13

20200370508

2020-11-26

Monolithic combustor bodies

#14

20200370506

2020-11-26

Monolithic heater bodies

#15

20200370505

2020-11-26

Energy conversion apparatus

#16

20200370503

2020-11-26

Constant density heat exchanger and system for energy conversion

#17

20200370446

2020-11-26

Energy conversion apparatus

#18

20200256281

2020-08-13

High Dynamic Density Range Thermal Cycle Engine

#19

20200208884

2020-07-02

Stirling-cycle cooling device with monobloc support

#20

20200149494

2020-05-14

DOUBLE-ACTING STIRLING ENGINES WITH OPTIMAL PARAMETERS AND WAVEFORMS

#21

20190055898

2019-02-21

Free piston engine power plant

#22

20180106241

2018-04-19

STIRLING ENGINE FOR AN EMISSION-FREE AIRCRAFT

#23

20160160795

2016-06-09

Stirling engine and methods of operations and use

#24

20160025075

2016-01-28

Stirling engine for an emission-free aircraft

#25

20120260648

2012-10-18

Heat engine

#26

20110315183

2011-12-29

Method and apparatus for a thermo-electric engine

#27

20110227347

2011-09-22

Heat engine

#28

20110030367

2011-02-10

Linear multi-cylinder stirling cycle machine

#29

20110025055

2011-02-03

Domestic combined heat and power generation system

#30

20100229546

2010-09-16

Heat Engine