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:
Nov. 11, 1980
Filed:
Mar. 05, 1979
Erich Gaschler, Wolfsburg, DE;
Volkswagenwerk Aktiengesellschaft, Wolfsburg, DE;
Abstract
An eccentric-rotor machine includes a housing having a longitudinal axis and defining a plurality of work chambers; radial housing walls bounding the work chambers; a multi-lobe rotor arranged in the housing for orbital motion therein to sequentially and cyclically vary the volume of each chamber in the execution of inward strokes and outward strokes. The rotor has opposite radial rotor walls each defining a clearance with an adjacent respective radial housing wall; and a sealing ring of circular course arranged in the clearance for sealing the work chambers. The sealing ring is concentric to the housing axis and has a diameter so dimensioned that in each chamber a length portion of the sealing ring is situated externally of the outline of the rotor when the volume of the respective chamber is at a maximum. Thus, in each chamber, a length portion of the sealing ring is out of contact with the respective radial rotor wall only during a terminal phase of the outward strokes (such as intake strokes) and a beginning phase of the inward strokes (such as compression strokes) of the rotor.