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. 04, 2025
Filed:
Mar. 27, 2024
Milwaukee Electric Tool Corporation, Brookfield, WI (US);
Adam Czerwonka, Mukwonago, WI (US);
Adam Ostrowski, Milwaukee, WI (US);
Milwaukee Electric Tool Corporation, Brookfield, WI (US);
Abstract
Blowers, e.g., for use in outdoor applications, are provided. A blower includes an air inlet; an air outlet; and a fan assembly disposed between the air inlet and the air outlet. The fan assembly has a three-stage fan. The three-stage fan includes three axial fans mounted on a drive shaft and three stator fans arranged in series with the axial fans, wherein each axial fan comprises a plurality of blades each having a blade tip. The three-stage fan has a dimensionless flow coefficient Φ in a range from about 0.3 to 0.5 as calculated by the equation Φ=(q/(A))/ωR where q represents flow (m/s), A represents cross sectional area at the fan (m), ω represents speed (rad/s) and R represents fan tip radius (m) measured at a blade tip.