Patent · US Active

Reverse fin cooling fan

US9926832B2 · kind B2 · utility

1Cited by

8References

19Claims

0Family size

Assignee

Briggs & Stratton, LLC · US

Inventors

Brett Birschbach · Wauwatosa, US
Rodney Balzar · Wauwatosa, US
Jeffrey P. Feist · Pewaukee, US
Casey Groh · Shorewood, US
Brian Johnson · Kewaskum, US
Randall J. Klotka · Grafton, US
Darwin A. Podhola · Mukwonago, US

Key dates

Filing date	Apr 24, 2015
Grant date	Mar 27, 2018
Priority date	—
Expiry date	Apr 24, 2035

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF04D29/281
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

An engine assembly includes a crankcase, a shaft, a housing, and a cooling fan. The shaft is coupled to the crankcase and defines a rotational axis. The housing has a sidewall that defines an internal space. The cooling fan is disposed at least partially within the internal space and is coupled to the shaft. The cooling fan includes a plate defining an upper surface and a lower surface. The plate is positioned to rotate with the shaft about the rotational axis. The cooling fan also includes a band that has an inner band radius and an outer band radius. The cooling fan also includes a plurality of reversed fins coupled to the band and extending from the upper surface of the plate, further radially outward from the rotational axis than the band.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.