Patent ID: 9716420
Date: 2017-07-25
CPC Classifications: F04D,H02K,Y10T

Claim:
1. A fan for a rotating device having a shaft with an axis of rotation, said fan comprising: a base plate comprising a front surface, a rear surface, and a hub configured for coupling to said shaft; and at least one blade projecting from said front surface of said base plate substantially perpendicular thereto, said at least one blade oriented substantially perpendicular to said base plate such that said fan is configured for bi-directional operation, said at least one blade comprising a first portion, a second portion, and a blade edge extending along said first and second portions, said blade edge of said first portion extending from said hub substantially perpendicular to said rotational axis, and said blade edge of said second portion extending curvilinearly from said first portion to an outer rim of said base plate, wherein said base plate is contoured to direct air at an acute angle relative to said axis of rotation.