The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 02, 1976
Filed:
Jun. 21, 1974
Applicant:
Inventors:
Gottlieb Wilmers, Neuenstadt, DT;
Gerhard Maurhoff, Neckarsulm, DT;
Assignees:
Audi NSU Auto Union Aktiengesellschaft, Neckarsulm, Wurttemberg, DT;
Wankel GmbH, Lindau (Bodensee), DT;
Primary Examiner:
Int. Cl.
CPC ...
F01C / ; F04C / ; F02B / ;
U.S. Cl.
CPC ...
418142 ;
Abstract
A rotary piston engine of the trochoid type is provided with a housing having two end pieces and a shell having a multi-arcuate interior surface in which the piston is rotatably mounted on the eccentric of an eccentric shaft. An internal seal for the piston includes at least one scraper ring arranged to be axially movable in a concentric annular groove in one face of the piston, revolving with the piston, and pressed by spring action against the adjacent end wall of the housing.