Patent ID: 9651057
Date: 2017-05-16
CPC Classifications: F04D,F05D,Y10T

Claim:
1. A blower assembly comprising: a housing comprising an outlet, an inlet, and a cutoff point positioned proximate said outlet; and an impeller comprising a rear plate and a plurality of blades coupled to said rear plate, wherein said rear plate positioned opposite said inlet, said plurality of blades each include a blade portion and a tip portion, wherein said blade portion comprises a first radial length and said tip portion comprises a second radial length shorter than said first radial length, said tip portion comprising a radially outer edge and a transition point that divides said radially outer edge into a first portion and a second portion, said impeller positioned within said housing such that a first radial gap is defined between said cutoff point and said first portion and a second radial gap is defined between said cutoff point and said second portion, wherein said first radial gap includes a constant width that is shorter than a width of said second radial gap, wherein said rear plate comprises a second radially outer edge positioned inward from said tip portion radially outer edge such that said tip portions extend entirely beyond said second radially outer edge.