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:
Jan. 10, 1989
Filed:
Jun. 10, 1986
Dankwart Eiermann, Weissensberg, DE;
Wankel GmbH, Berlin, DE;
Abstract
An inner seal of a rotary piston engine has a U-shaped base body with legs running along the adjoining housing sidewall. During movement of the piston, the oil adhering along the housing sidewall is conveyed in an opening in the housing sidewall concentric to an eccentric shaft. The inner seal has a plurality of sealing laminations that are arranged along an inner base surface thereof and that are located with a scraper edge forming an acute abutting angle along the housing sidewall counter to direction of rotation. The angle of the scraper edge located in the plane of the housing sidewall equals respectively is smaller than that of the tangent along the rising branch of the trochoidal path, course or runway described by an inner corner of the scraper edge upon the housing sidewall relative to a radius of the inner seal intersecting this corner.