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. 08, 1992
Filed:
Jun. 29, 1990
Steven J Zumbusch, Eden Prairie, MN (US);
Walter K O'Neil, Birmingham, MI (US);
Eaton Corporation, Cleveland, OH (US);
Abstract
A homoplanar brushless electric gerotor (10) includes a housing assembly (32) defining a substantially closed cavity (52), a fluid inlet port (88). Inner and outer gerotor pump gears (72,74), are eccentrically disposed for relative rotation within the cavity whereupon a working fluid received at the inlet port at a low pressure is discharged from the outlet port at a high pressure. A plurality of alternatingly radially polarized circumferentially aligned permanent magnets (76) are carried by one of the pump gears for rotation therewith. A stator including windings (44) circumferentially distributed and axially spaced from the permanent magnets (76) electromagnetically interact therewith to effect their rotation upon the electrical energization of the windings (44) by a drive circuit (26).