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:
Jul. 27, 2010
Filed:
May. 31, 2007
William Stevens, Maynard, MA (US);
Robert W. Stairs, Westwood, MA (US);
William Stevens, Maynard, MA (US);
Robert W. Stairs, Westwood, MA (US);
Robert Bosch GmbH, Stuttgart, DE;
Abstract
The present invention provides an axial fan assembly including a motor having an output shaft rotatable about a central axis and a shroud coupled to the motor. The shroud includes a substantially annular outlet bell centered on the central axis. The axial fan assembly also includes an axial fan having a hub coupled to the output shaft for rotation about the central axis, a plurality of blades extending radially outwardly from the hub and arranged about the central axis, a substantially circular band coupled to the tips of the blades, and a plurality of leakage stators positioned radially outwardly from the band and adjacent the outlet bell.