US 11,686,320 B2
Centrifugal fan
Tyler J. Stanley, Edmond, OK (US); Blaine S. Talbot, Stillwater, OK (US); Matthew L. Lemmons, Perry, OK (US); and Thomas Howard Mertz, Stillwater, OK (US)
Assigned to The Charles Machine Works, Inc., Perry, OK (US)
Filed by The Charles Machine Works, Inc., Perry, OK (US)
Filed on Oct. 10, 2022, as Appl. No. 17/962,709.
Application 17/962,709 is a continuation of application No. 17/226,673, filed on Apr. 9, 2021, granted, now 11,480,189, issued on Oct. 25, 2022.
Application 17/226,673 is a continuation of application No. 16/514,287, filed on Jul. 17, 2019, granted, now 10,975,879, issued on Apr. 13, 2021.
Claims priority of provisional application 62/699,939, filed on Jul. 18, 2018.
Prior Publication US 2023/0036202 A1, Feb. 2, 2023
Int. Cl. F04D 29/28 (2006.01); F04D 29/42 (2006.01)
CPC F04D 29/281 (2013.01) [F04D 29/4226 (2013.01); F05D 2250/711 (2013.01); F05D 2250/712 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A work machine situated in an ambient environment, comprising:
an engine compartment comprising:
a centrifugal fan comprising an impeller installed within a casing, the casing interposed between an engine and a radiator, and the casing having opposed first and second side vents;
an exhaust pipe having an exhaust opening; and
a cover having opposed first and second side openings;
in which the engine, the radiator, the centrifugal fan, and the exhaust pipe are all positioned beneath the cover;
in which the exhaust opening and the first side vent are exposed to the ambient environment via the first opening formed in the cover, and the second side vent is exposed to the ambient environment via the second side opening formed in the cover.