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:
Feb. 27, 1990
Filed:
Aug. 02, 1988
Gerald N Baker, St. Louis, MO (US);
Barry M Newberg, St. Louis, MO (US);
Emerson Electric Co., St. Louis, MO (US);
Abstract
An electric motor ventilation structure having an interior fan with a dual concentric set of radially disposed blades located within an endshield of said motor in close proximity to the end of the rotor and stator assemblies within said endshield and to the other peripheral surfaces of said stator assembly within that endshield. The disposition of said blades is such as to break the hot air boundary layer adjacent to each of said windings and cause the movement of heated air through the axial and radial endshield apertures to the external environment and replenishment with cooler air from that environment during motor operation.