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:
Aug. 21, 1990
Filed:
May. 30, 1989
Harold B Harms, Fort Wayne, IN (US);
David M Erdman, Fort Wayne, IN (US);
General Electric Company, Fort Wayne, IN (US);
Abstract
A fan motor assembly provides axial air flow. A rotatable assembly including a substantially cylindric central portion supported for rotation about an axis coaxial with said central portion. The central portion has at least one permanent magnet element which rotates about the axis as the central portion rotates. The rotatable assembly further includes fan blades on an annular wall of the central portion and extending radially outwardly from the central portion. The annular wall and the central portion form an annular channel. The blades axially move air which is located about the outer periphery of the rotatable assembly as the rotatable assembly rotates. A stationary assembly includes a support for an annular core having a central opening to receive the central portion and having winding stages thereon in magnetic coupling relation with the permanent magnet element and electrically energized to generate an electromagnetic field, the core received within the annular channel of the rotatable assembly. The stationary assembly includes a bearing, centrally located on the support, for supporting the rotatable assembly for rotation about the axis.