F02G 1/047

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Class  F02G : HOT-GAS OR COMBUSTION- PRODUCT POSITIVE-DISPLaCEMENT ENGINE PLANTS


Subclass 1/047: Hot gas positive-displacement engine plants (positive-displacement engine plants characterised by the working gas being generated by combustion in the plant F02G 3/00) 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 Controlling by varying the heating or cooling

Recent Patents

Patent #TitleFiling DateIssue DatePatent Owner
12129812 Engine apparatus and method for operationMay 20, 20Oct 29, 24Hyliion Holdings Corp.
12085041 Near isothermal machineJan 11, 22Sep 10, 24ISOTHERMAL LIMITED
11976610 Constant density heat exchanger and system for energy conversionMar 20, 23May 07, 24Hyliion Holdings Corp.
11739711 Energy conversion apparatusOct 18, 21Aug 29, 23Hyliion Holdings Corp.
11629663 Energy conversion apparatusJan 28, 22Apr 18, 23General Electric Company
11473525 Energy harvesting heat engine and actuatorJan 11, 21Oct 18, 22Synergy Power, LLC
11346302 Monolithic heat-exchanger bodiesNov 02, 20May 31, 22General Electric Company
11326498 Exhaust gas heat recovery system and exhaust systemJun 11, 20May 10, 22Volkswagen Aktiengesellschaft
11268476 Energy conversion apparatusMay 20, 20Mar 08, 22General Electric Company
11209192 Cryogenic Stirling refrigerator with a pneumatic expanderJul 29, 19Dec 28, 21Cryo Tech Ltd.
11181072 Monolithic combustor bodiesMay 20, 20Nov 23, 21General Electric Company
11174814 Energy conversion apparatusMay 20, 20Nov 16, 21General Electric Company
11125184 Constant density heat exchanger and system for energy conversionMay 20, 20Sep 21, 21General Electric Company
11125183 Effective low temperature differential powered engines, systems, and methodsAug 04, 20Sep 21, 21Navita Energy, Inc.
11035270 Internal combustion engine having an exhaust heat recovery system as well as a method for recovering exhaust heatJun 11, 20Jun 15, 21Volkswagen Aktiengesellschaft
11022068 Monolithic heater bodiesMay 20, 20Jun 01, 21General Electric Company
10961949 Energy conversion apparatus and control systemMay 20, 20Mar 30, 21General Electric Company
10815928 Preventing overstroke of free-piston stirling engine from loss of loadFeb 19, 19Oct 27, 20Sunpower, Inc.
10815931 Waste heat recovery system with low temperature heat exchangerDec 14, 17Oct 27, 20Cummins Inc.
10781771 Automatic cooling system for combustion engineSep 22, 19Sep 22, 20Not available

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Recent Publications

Publication #TitleFiling DatePub DatePatent Owner
2025/0043,747 STIRLING ENGINEJul 31, 24Feb 06, 25Yanmar Holdings Co., Ltd.
2024/0159,201 MONOLITHIC HEAT-EXCHANGER BODIESJan 26, 24May 16, 24Not available
2024/0102,430 NEAR ISOTHERMAL MACHINEJan 11, 22Mar 28, 24Not available
2021/0381,467 CONSTANT DENSITY HEAT EXCHANGER AND SYSTEM FOR ENERGY CONVERSIONAug 20, 21Dec 09, 21Not available
2021/0033,313 CRYOGENIC STIRLING REFRIGERATOR WITH A PNEUMATIC EXPANDERJul 29, 19Feb 04, 21CRYO TECH LTD.
2020/0370,504 ENERGY CONVERSION APPARATUS AND CONTROL SYSTEMMay 20, 20Nov 26, 20Not available
2020/0263,631 Preventing Overstroke Of Free-Piston Stirling Engine From Loss Of LoadFeb 19, 19Aug 20, 20Not available
2017/0175,672 LIQUID PISTON ENGINEMar 04, 15Jun 22, 17APOLLO HYBRID, INC.

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Patents Issued To Date - By Filing Year

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