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:
Jan. 01, 2019
Filed:
May. 12, 2016
Briggs & Stratton Corporation, Wauwatosa, WI (US);
Brett Birschbach, Wauwatosa, WI (US);
Rodney John Balzar, West Bend, WI (US);
Jeffery P. Feist, Pewaukee, WI (US);
Casey E. Groh, Shorewood, WI (US);
Brian Johnson, Kewaskum, WI (US);
Randall J. Klotka, Grafton, WI (US);
Darwin A. Podhola, Mukwonago, WI (US);
Ryan Sullivan, West Bend, WI (US);
Matt Martinek, Cedarburg, WI (US);
Brian Paul, Wauwatosa, WI (US);
Briggs & Stratton Corporation, Wauwatosa, WI (US);
Abstract
An engine assembly includes a crankcase, shaft, blower housing, and cooling fan. The shaft is rotatably coupled to the crankcase and defines a rotational axis. The blower housing includes an internal space. The cooling fan is disposed within the internal space, includes a plate defining an upper surface, and is positioned to rotate with the shaft about the rotational axis. The cooling fan includes a band having an inner band radius and an outer band radius. The cooling fan includes a plurality of reversed fins extending between the band and the upper surface and between a root adjacent to the rotational axis and a tip adjacent to the outer band radius, each fin offset at an angle measured in a counterclockwise direction from a plane passing through the rotational axis and the tip to a plane passing through the root and the tip when viewed from above the cooling fan.