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:
Sep. 03, 1991
Filed:
Aug. 16, 1990
Aisin Seiki Kabushiki Kaisha, Kariya, JP;
Abstract
A rotor device includes a casing, an outer rotor positioned in the casing and rotatable about a first rotational axis, and an inner rotor positioned in the casing and rotatable about a second rotational axis. An outer sealing portion of the inner rotor defines a locus along an inner wall surface of an operating chamber of the outer rotor as a result of the rotation of the inner rotor. An inner sealing portion of the outer rotor defines a locus along an outer circumferential surface of the inner rotor in response to the rotation of the outer rotor. The inner wall surface of the operating chamber engages the outer circumferential surface of the inner rotor through a gear engagement. A driving input shaft portion is connected to the outer rotor and a first gear having teeth on its inner circumferential surface is connected to the outer rotor. A second gear having teeth on its outer circumferential surface is connected to the inner rotor and is engaged with the first gear, whereby the inner rotor is driven by the outer rotor via the first and second gears.