An electric motor

摘要

There is disclosed an electric motor (120) including a housing (86) defining an aperture (82) therethrough. The motor (20) also includes an armature (104) mounted in the housing (86) and a brush (110) mounted in the housing (86) and slidably connected to the armature (104). The housing (86) substantially encloses the armature (104) and the brush (110). The aperture (82) is positioned with respect to the brush (110) so that the brush (110) may be visible through the aperture (82) and so that the remaining usable life of the brush (110) may be visually determined while the electric motor prior or during assembly into a xerographic copy machine.