Patent ID: 7709994

Claim:
A brush board assembly for an electric motor of the type having a rotary armature situated within a motor housing, the armature having an axial rotary shaft and a commutator positioned on said shaft; the brush board assembly comprising a brush board frame including an annular mounting plate adapted to be mounted onto an end of the housing and having a circular central opening for admitting said commutator; a plurality of brush holders formed on said mounting plate and distributed around said central opening, each said brush holder including a first support member and a second support member extending generally axially from the annular mounting plate and defining between them a brush chamber, the first support member of each said brush holder including a brush hold-down receptacle; and an outer support plate extending in a plane that is generally parallel to said annular mounting plate at an axial outer end of said brush holders; wherein the brush board frame is unitarily molded of a suitable plastic resin having a capability of withstanding temperatures of 210° C.; and a plurality of brush retaining hold down members, each including a spring carrier that is insertable into the hold down receptacle of a respective one of said first support members, and a brush hold-down spring mounted thereon and adapted to urge a brush member radially inward in the respective brush chamber.