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Max Ruf
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Obereisecheim, DT
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Patents Grants
last 30 patents
Information
Patent Grant
Fluid-cooled rotary piston for Wankel-type mechanism
Patent number
4,090,823
Issue date
May 23, 1978
Audi NSU Auto Union Aktiengesellschaft
Max Ruf
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information
Patent Grant
Rotary piston engine piston having an internal seal
Patent number
4,090,824
Issue date
May 23, 1978
Audi NSU Auto Union Aktiengesellschaft
Max Ruf
F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information
Patent Grant
Seal grid for a rotary internal combustion engine
Patent number
4,080,116
Issue date
Mar 21, 1978
Audi NSU Auto Union Aktiengesellschaft
Anton Mokratschek
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information
Patent Grant
Process for producing metal rings
Patent number
4,037,455
Issue date
Jul 26, 1977
Audi NSU Auto Union Aktiengesellschaft
Max Ruf
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Grant
Method of making rotary piston engine cast iron interior seals by q...
Patent number
4,025,366
Issue date
May 24, 1977
Audi NSU Auto Union Aktiengesellschaft
Max Ruf
F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information
Patent Grant
Internal combustion engine having provisions for heating the fuel-a...
Patent number
4,009,701
Issue date
Mar 1, 1977
Audi NSU Auto Union Aktiengesellschaft
Max Ruf
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information
Patent Grant
Piston of a rotary piston engine of trochoid type, having an intern...
Patent number
4,005,953
Issue date
Feb 1, 1977
Audi NSU Auto Union Aktiengesellschaft
Max Ruf
F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information
Patent Grant
Rotary combustion engine having a modified trochoid
Patent number
3,990,817
Issue date
Nov 9, 1976
Audi NSU Auto Union Aktiengesellschaft
Max Ruf
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information
Patent Grant
Rotary piston four-stroke internal combustion engine
Patent number
3,939,655
Issue date
Feb 24, 1976
Audi NSU Auto Union Aktiengesellschaft
Max Ruf
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS