F02G 1/053

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


Subclass 1/053: 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 Component parts or details

Recent Patents

Patent #TitleFiling DateIssue DatePatent Owner
12215653 Rod seal assemblies for machines with crossheads and sealed oscillating rodsJan 29, 20Feb 04, 25ENERGYINTEL SERVICES LTD
12129812 Engine apparatus and method for operationMay 20, 20Oct 29, 24Hyliion Holdings Corp.
12085041 Near isothermal machineJan 11, 22Sep 10, 24ISOTHERMAL LIMITED
12078123 Stirling cycle machineSep 07, 22Sep 03, 24DEKA Products Limited Partnership
12000357 Reciprocating heat engine with hot cylinder head and cold cylinderFeb 09, 23Jun 04, 24Not available
11976610 Constant density heat exchanger and system for energy conversionMar 20, 23May 07, 24Hyliion Holdings Corp.
11821386 Flare systemDec 09, 20Nov 21, 23Not available
11796065 Piston rod sealJan 31, 19Oct 24, 23Not available
11767784 Expander systemDec 23, 21Sep 26, 23Volvo Car Corporation
11746904 Reinforced sealing ringsNov 17, 21Sep 05, 23Mainspring Energy, Inc.
11739711 Energy conversion apparatusOct 18, 21Aug 29, 23Hyliion Holdings Corp.
11725607 Hot air engine having a step pistonDec 16, 21Aug 15, 23FRAUSCHER HOLDING GMBH
11629663 Energy conversion apparatusJan 28, 22Apr 18, 23General Electric Company
11535240 Computer controlled solid state switching device for electrical system in a Stirling-electric hybrid vehicleMay 15, 18Dec 27, 22Not available
11530668 Closed cycle regenerative heat enginesMay 25, 21Dec 20, 22Stirling Works Global Ltd
11473524 Reciprocating motion engineJan 15, 20Oct 18, 22Twinbird Corporation
11473525 Energy harvesting heat engine and actuatorJan 11, 21Oct 18, 22Synergy Power, LLC
11448158 Stirling cycle machineAug 22, 19Sep 20, 22New Power Concepts LLC
11448159 Stirling engine with a membrane connecting the piston to the cylinder of the Stirling engine and a method of using this Stirling engineApr 28, 20Sep 20, 22SUN ORBIT GMBH
11346302 Monolithic heat-exchanger bodiesNov 02, 20May 31, 22General Electric Company

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Recent Publications

Publication #TitleFiling DatePub DatePatent Owner
2025/0067,230 STIRLING CYCLE MACHINEAug 30, 24Feb 27, 25Not available
2024/0337,259 ASYMMETRIC GAS BEARING BUSHING FOR THERMO-PUMPJan 23, 24Oct 10, 24Not available
2024/0318,612 ELECTROMAGNETOCHEMICAL METHODOLOGY FOR CURING STEEL ALLOYS AGAINST HYDROGEN PERMEATION AND EMBRITTLEMENT IN THE MANUFACTURE OF STIRLING ENGINESJan 22, 24Sep 26, 24Quantum Industrial Development Corporation
2024/0271,588 HEAT ENERGY CONVERSION DEVICEMay 16, 22Aug 15, 24Not available
2024/0159,201 MONOLITHIC HEAT-EXCHANGER BODIESJan 26, 24May 16, 24Not available
2024/0102,430 NEAR ISOTHERMAL MACHINEJan 11, 22Mar 28, 24Not available
2023/0407,812 STIRLING ENGINE, AND METHOD FOR ADJUSTING SAMEDec 13, 21Dec 21, 23Twinbird Corporation
2023/0147,340 STIRLING ENGINENov 07, 22May 11, 23Yanmar Holdings Co., Ltd.
2021/0381,467 CONSTANT DENSITY HEAT EXCHANGER AND SYSTEM FOR ENERGY CONVERSIONAug 20, 21Dec 09, 21Not available
2021/0080,157 SYSTEMS AND METHODS FOR VAPOR COMPRESSION REFRIGERATION USING A CONDENSER APPARATUSSep 17, 20Mar 18, 21Not available
2021/0033,313 CRYOGENIC STIRLING REFRIGERATOR WITH A PNEUMATIC EXPANDERJul 29, 19Feb 04, 21CRYO TECH LTD.
2020/0408,168 Hot Gas Engine Having a Step PistonMay 03, 18Dec 31, 20Not available
2020/0088,131 Closed Cycle Regenerative Heat EnginesMay 25, 17Mar 19, 20Not available
2019/0376,469 APPARATUS FOR PERFORMING ENERGY TRANSFORMATION BETWEEN THERMAL ENERGY AND ACOUSTIC ENERGYOct 20, 17Dec 12, 19Not available
2019/0323,451 Liquid Piston Stirling Engine with Linear GeneratorApr 22, 19Oct 24, 19Not available
2018/0298,843 WASTE-HEAT RECOVERY SYSTEM AND METHOD FOR RECOVERY OF WASTE-HEATApr 12, 17Oct 18, 18Not available
2018/0274,482 STIRLING CYCLE MACHINEOct 23, 17Sep 27, 18Not available

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Top Owners in This Subclass

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Patents Issued To Date - By Filing Year

Average Time to Issuance