Patent ID: 8591619

Claim:
A fan, comprising: fan blades; a motor that operates the fan blades; a fan chassis that surrounds the motor and fan blades; front and rear grills that shield the fan blades and allow for air movement through the fan, each of the front and rear grills comprising a lattice grate and at least one of the front and rear grills comprising a plurality of channel tabs that define a channel, wherein the plurality of channel tabs extend in an outward direction from a surface of the lattice grate, wherein a first portion of at least one first channel tab extends from the outer surface in a direction transverse to the outer surface and a second portion of the at least one first channel tab extends from the first portion of the at least one first channel tab in a direction substantially parallel to the outer surface and toward a middle region of the lattice grate, and wherein a portion of at least one second channel tab extends in an outward direction from a lower portion of the lattice grate and operates as a stop for the channel.