Electric motor commutator end construction

Claim 2

In an electric motor including an armature having a commutator, and brushes for making electrical connection thereto, the combination of an insulating end member for said motor; brush holder means located in an axially facing surface of said end member; a brush located in said brush holder means; a cap covering said axially facing surface and retaining said brush between said cap and said surface; a flexible lead wire electrically connected to said brush at one end of said wire; a connector coupling the other end of said lead wire in an electrical circuit; an aperture in said end member for receiving said connector; a portion of said cap being arranged to retain said connector in said aperture; and means mounting said cap to said end member.

Claim 3

The combination claimed in claim 1 wherein said brush holder means comprises a radially extending slot formed in said axially facing surface of said end member; and a metallic brush holder positioned in said slot for retaining said brush.

Claim 4

The combination claimed in claim 1 wherein said axially facing surface and said cap define therebetween a channel for receiving the portions of said leads adjacent said connector.

Claim 5

The combination claimed in claim 1 wherein said mounting means for said cap comprises a bolt extending through said cap and said end member.

Claim 6

In an electric power tool including a housing, an electric motor mounted in said housing, and an element extending from said housing for providing an output, said electric motor including an armature having a commutator, and brushes for making electrical connection thereto; the improvement comprising an insulating end member for said motor; brush holder means located in an axially facing surface or said end member; a brush located in said brush holder means; a cap covering said axially facing surface and retaining said brush between said cap and said surface; a lead electrically connected to said brush and terminating in a connection to an electrical circuit; an aperture in said end member for receiving the terminal portion of said lead; a portion of said cap being arranged to retain said terminal portion in said aperture; and means mounting said cap to said end member; said housing comprising an end portion generally enclosing said end member; and a rib portion extending toward said end member from said end portion, said rib terminating adjacent said cap when said housing is in an assembled position whereby movement of said cap sufficient to release said terminal portion of said lead from said aperture is prevented by said rib.

Claim 7

In an electric power tool including a housing, an electric motor mounted in said housing, and an element extending from said housing for providing an output, said electric motor including an armature having a commutator, and brushes for making electrical connection thereto; the improvement comprising an insulating end member for said motor; brush holder means located in an axially facing surface or said end member; a brush located in said brush holder means; a cap covering said axially facing surface and retaining said brush between said cap and said surface; a lead electrically connected to said brush and terminating in a connection to an electrical circuit; an aperture in said end member for receiving the terminal portion of said lead; a portion of said cap being arranged to retain said terminal portion in said aperture; and means mounting said cap to said end member; said housing comprising an end portion generally enclosing said end member; and a rib portion extending toward said end member from said end portion, said rib terminating adjacent said cap when said housing is in an assembled position whereby movement of said cap sufficient to release said terminal portion of said lead from said aperture is prevented by said rib.

Claim 8

The combination claimed in claim 5 wherein said cap is retained on said end member by a bolt extending therethrough; said rib being positioned adjacent said bolt so as to retain said bolt in operative position and thereby retain said cap on said end member.

Claim 9

In a lawn mower comprising blade means for cutting grass, deck means for enclosing said blade, means mounting said deck for movement over the ground and an electric motor including an armature having a commutator and brushes for making electrical connection thereto, the combination of an insulating end member for said motor; brush holder means located in an axially facing surface of said end member; a brush located in said brush holder means; a cap covering said axially facing surface and retaining said brush between said cap and said surface; a lead electrically connected to said brush and terminating in a connection to an electrical circuit; an aperture in said end member for receiving the terminal portion of said lead; a portion of said cap being arranged to retain said terminal portion in said aperture; and means mounting said cap to said end member; a housing enclosing said motor and having an end portion enclosing said end member; said housing including rib portions extending toward said cap for retaining said cap in engagement with said end member.

Claim 10

In a lawn mower comprising blade means for cutting grass, deck means for enclosing said blade, means mounting said deck for movement over the ground and an electric motor including an armature having a commutator and brushes for making electrical connection thereto, the combination of an insulating end member for said motor; brush holder means located in an axially facing surface of said end member; a brush located in said brush holder means; a cap covering said axially facing surface and retaining said brush between said cap and said surface; a lead electrically connected to said brush and terminating in a connection to an electrical circuit; an aperture in said end member for receiving the terminal portion of said lead; a portion of said cap being arranged to retain said terminal portion in said aperture; and means mounting said cap to said end member; a housing enclosing said motor and having an end portion enclosing said end member; said housing including rib portions extending toward said cap for retaining said cap in engagement with said end member.