Patent ID: 8049380

Claim:
An electric motor comprising: a stator comprising a housing with inlets and outlets; a rotor rotatably installed in the housing of the stator, the rotor comprising a shaft, a rotor core fitted to the shaft, and a commutator fitted to the shaft adjacent the rotor core; a fan fixed to the rotor for rotation there with; an end cap fitted to the housing and closing a first end of the housing and supporting electrical components; brush gear, supported by the end cap, comprising at least two brush assemblies, each brush assembly comprising a brush for making sliding electrical contact with the commutator and a brush guidance mechanism for resiliently urging the brush into contact with the commutator; and an air guide; wherein the end cap has compartments accommodating the brush assemblies, each compartment having vents on an axially facing side thereof and openings in a transverse wall thereof and the air guide guides a part of the airflow generated by the fan exiting from said one of the outlets of the housing to flow into the compartments via the openings and exit the compartments via the vents to cool the brushes therein.