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Patents Grants
last 30 patents
Information
Patent Grant
Position-independent rotary piston internal combustion engine
Patent number
5,452,996
Issue date
Sep 26, 1995
Wankel GmbH
Dankwart Eiermann
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information
Patent Grant
Cooling medium pump of a rotary piston internal combustion engine
Patent number
5,100,309
Issue date
Mar 31, 1992
Wankel GmbH
Dankwart Eiermann
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information
Patent Grant
Machine unit consisting of a rotary piston internal combustion engi...
Patent number
5,067,557
Issue date
Nov 26, 1991
Wankel GmbH
Roland Nuber
B60 - VEHICLES IN GENERAL
Information
Patent Grant
Rotary piston internal combustion engine
Patent number
5,049,049
Issue date
Sep 17, 1991
Wankel GmbH
Dankwart Eiermann
F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information
Patent Grant
Rotary piston blower having piston lobe portions shaped to avoid co...
Patent number
5,039,289
Issue date
Aug 13, 1991
Wankel GmbH
Dankwart Eiermann
F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information
Patent Grant
Bearing- and drive arrangement of a rotary piston internal combusti...
Patent number
5,011,385
Issue date
Apr 30, 1991
Wankel GmbH
Dankwart Eiermann
F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information
Patent Grant
Rotary piston internal combustion engine
Patent number
5,011,387
Issue date
Apr 30, 1991
Wankel GmbH
Josef Speiser
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information
Patent Grant
Piston of a rotary piston engine
Patent number
4,971,533
Issue date
Nov 20, 1990
Wankel GmbH
Franz Sutter
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information
Patent Grant
Lubrication system for an eccentric bearing of a rotary piston inte...
Patent number
4,969,809
Issue date
Nov 13, 1990
Wankel GmbH
Dankwart Eiermann
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information
Patent Grant
Delivery valve of a rotary piston compressor
Patent number
4,943,217
Issue date
Jul 24, 1990
Wankel GmbH
Roland Nuber
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Lubrication system for a rotary-piston internal combustion engine
Patent number
4,940,400
Issue date
Jul 10, 1990
Wankel GmbH
Josef Speiser
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information
Patent Grant
Bearing arrangement of an external-axial rotary piston blower
Patent number
4,886,437
Issue date
Dec 12, 1989
Wankel GmbH
Werner Schubert
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Parallel-and external-axial rotary piston blower operating in meshi...
Patent number
4,867,659
Issue date
Sep 19, 1989
Wankel GmbH
Dankwart Eiermann
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Cooling system of an eccentric shaft of a rotary piston internal co...
Patent number
4,850,827
Issue date
Jul 25, 1989
Wankel GmbH
Dankwart Eiermann
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information
Patent Grant
Rotary piston blower with foamed synthetic material surfaces runnin...
Patent number
4,846,642
Issue date
Jul 11, 1989
Wankel GmbH
Roland Nuber
F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information
Patent Grant
Refrigerator compressor/internal combustion engine unit of the rota...
Patent number
4,842,494
Issue date
Jun 27, 1989
Wankel GmbH
Josef Speiser
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Lubrication system for a rotary-piston internal combustion engine
Patent number
4,830,591
Issue date
May 16, 1989
Wankel GmbH
Dankwart Eiermann
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information
Patent Grant
Axial seal for a rotary-piston engine
Patent number
4,824,125
Issue date
Apr 25, 1989
Wankel GmbH
Dankwart Eiermann
F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information
Patent Grant
Machine installation for a heat pumping plant
Patent number
4,822,253
Issue date
Apr 18, 1989
Wankel GmbH
Roland Nuber
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information
Patent Grant
Axial sealing system of a rotary piston engine
Patent number
4,808,096
Issue date
Feb 28, 1989
Wankel GmbH
Dankwart Eiermann
F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information
Patent Grant
Cooling system for a rotary piston internal combustion engine
Patent number
4,801,254
Issue date
Jan 31, 1989
Wankel GmbH
Dankwart Eiermann
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information
Patent Grant
Bearing arrangement of an external-axial rotary piston blower
Patent number
4,797,078
Issue date
Jan 10, 1989
Wankel GmbH
Werner Schubert
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Inner seal of a rotary piston engine
Patent number
4,797,076
Issue date
Jan 10, 1989
Wankel GmbH
Dankwart Eiermann
F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information
Patent Grant
Arrangement for cooling the piston of a rotary piston internal comb...
Patent number
4,793,304
Issue date
Dec 27, 1988
Wankel GmbH
Dankwart Eiermann
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information
Patent Grant
Eccentric shaft of a rotary piston internal combustion engine
Patent number
4,793,778
Issue date
Dec 27, 1988
Wankel GmbH
Dankwart Eiermann
F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information
Patent Grant
Radial seal of a rotary piston engine
Patent number
4,790,734
Issue date
Dec 13, 1988
Wankel GmbH
Dankwart Eiermann
F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information
Patent Grant
Radial seal of a rotary piston engine
Patent number
4,786,241
Issue date
Nov 22, 1988
Wankel GmbH
Dankwart Eiermann
F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information
Patent Grant
External axial rotary piston blower with noise suppressing transfer...
Patent number
4,781,541
Issue date
Nov 1, 1988
Wankel GmbH
Wolfgang Sohler
F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information
Patent Grant
Fluid-cooled housing of a rotary piston internal combustion engine
Patent number
4,779,578
Issue date
Oct 25, 1988
Wankel GmbH
Dankwart Eiermann
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information
Patent Grant
Rotary piston blower having offset shafts and a tapered housing to...
Patent number
4,758,140
Issue date
Jul 19, 1988
Wankel GmbH
Wilhelm Durach
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Patents Applications
last 30 patents
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