US 11,866,895 B2
Fan for regenerative air vacuum street sweeper, and method of fan manufacture and assembly
Aditya G. Anand, Waterloo, IA (US); Clayton D. Wright, Des Moines, IA (US); and Aaron T. Baughman, Cedar Falls, IA (US)
Assigned to CURBTENDER SWEEPERS LLC, Cedar Fall, IA (US)
Filed by Curbtender Sweepers LLC, Cedar Falls, IA (US)
Filed on Mar. 7, 2023, as Appl. No. 18/179,832.
Application 18/179,832 is a division of application No. 16/948,335, filed on Sep. 14, 2020, granted, now 11,702,806.
Prior Publication US 2023/0220638 A1, Jul. 13, 2023
Int. Cl. F04D 29/28 (2006.01); E01H 1/08 (2006.01); A47L 9/10 (2006.01); A47L 5/22 (2006.01); F04D 17/16 (2006.01); F04D 29/42 (2006.01)
CPC E01H 1/0836 (2013.01) [A47L 5/22 (2013.01); A47L 9/104 (2013.01); F04D 17/164 (2013.01); F04D 29/281 (2013.01); F04D 29/282 (2013.01); F04D 29/4226 (2013.01); E01H 1/0845 (2013.01); F05D 2230/10 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A method of assembling a fan having a housing with a plurality of internal airfoil blades each having leading and trailing edges, comprising:
inserting pins on opposite sides of the leading edge of each blade into mating holes in opposite sides of the housing; and
fixing the trailing edges of each blade to the housing.