Dynamoelectric machine brush rigging

Claim 2

An end cap assembly for a dynamoelectric machine comprising, an end cap having bearing means adapted to receive the shaft of a dynamoelectric machine rotor, at least one brush holder extending radially of said end cap, a brush slidably supported by said brush holder, resilient means for urging said brush radially of said end cap, and an annular brush retainer having outer wall means engaging and slidably supported by internal wall means of said end cap for movement axially of said end cap, said retainer having a central opening, said internal wall means of said end cap extending axially of said bearing means, a portion of the outer wall means of said brush retainer engaging an end of said brush to hold said brush in a retracted position against the force of said resilient means, said brush retainer being axially movable toward said bearing means along said internal wall means by engagement with a dynamoelectric machine rotor when the shaft of the rotor is inserted through said central opening in said retainer and into said bearing means to thereby move said brush retainer to an assembled position in contact with said internal wall means and out of engagement with the end of said brush to permit said brush to contact a rotary current conducting means of said dynamoelectric machine rotor.

Claim 3

An end cap assembly for a dynamoelectric machine comprising, an end cap having bearing means adapted to receive the shaft of a dynamoelectric machine rotor, at least one brush holder extending radially of said end cap, a brush slidably supported by said brush holder, resilient means for urging said brush radially of said end cap, an annular bore formed in said end cap having an annular wall open to said bearing means, a plurality of flange portions extending axially of said bore having inner arcuately extending walls substantially aligned with said annular wall, the inner wall of each flange portion having rib means, and an annular brush retainer having outer wall means engaging said inner walls of said flange portions and engaging said rib means, said retainer having a central opening, at least a portion of the outer wall means of said brush retainer engaging an end of said brush to hold said brush in a retracted position against the force of said resilient means, said brush retainer being axially movable toward said bearing means and into contact with said annular wall of said bore by engagement with a dynamoelectric machine rotor when the shaft of the rotor is inserted through said central opening in said retainer and into said bearing means to thereby move said brush retainer past said rib means to an assembled position in contact with said annular wall and out of engagement with the end of said brush to permit said brush to contact a rotary current conducting means of said dynamoelectric machine rotor.

Claim 4

An end cap assembly for a dynamoelectric machine comprising, an end cap having bearing means adapted to receive the shaft of a dynamoelectric machine rotor, at least one brush holder extending radially of said end cap, a brush slidably supported by said brush holder, resilient means for urging said brush radially of said end cap, an annular bore formed in said end cap having an annular wall open to said bearing means, a plurality of flange portions extending axially of said bore having inner arcuately extending walls substantially aligned with said annular wall, the inner wall of each flange portion having rib means, and an annular brush retainer having outer wall means engaging said inner walls of said flange portions and engaging said rib means, said retainer having a central opening, at least a portion of the outer wall means of said brush retainer engaging an end of said brush to hold said brush in a retracted position against the force of said resilient means, said brush retainer being axially movable toward said bearing means and into contact with said annular wall of said bore by engagement with a dynamoelectric machine rotor when the shaft of the rotor is inserted through said central opening in said retainer and into said bearing means to thereby move said brush retainer past said rib means to an assembled position in contact with said annular wall and out of engagement with the end of said brush to permit said brush to contact a rotary current conducting means of said dynamoelectric machine rotor.

Claim 5

An end cap assembly for a direct current motor comprising, a one-piece end cap formed of insulating material, first and second metallic brush holders each having a generally U-shaped brush retaining portion supported by said end cap, said first metallic brush holder having an integral first male terminal extending axially through an opening in said end cap, a terminal member having a second male terminal extending through an opening formed in said end cap adjacent said first male terminal, said terminal member having an integral axially extending flange, a stud integral with said end cap staked into engagement with a portion of said first brush holder and a portion of said terminal member for securing said first brush holder and terminal member to said end cap, said second brush holder having an integral axially extending flange substantially aligned with said axially extending flange of said terminal member, a circuit breaker assembly having planar end portions engaging respectively the flange on said terminal member and the flange on said second brush holder, and a C-shaped clip located at each end of said circuit breaker assembly and contacting respectively a flange and a planar end portion of said circuit breaker assembly for clamping said circuit breaker assembly to said flanges.

Claim 6

An end cap assembly for a direct current motor comprising, a one-piece end cap formed of insulating material, first and second metallic brush holders each having a generally U-shaped brush retaining portion supported by said end cap, said first metallic brush holder having an integral first male terminal extending axially through an opening in said end cap, a terminal member having a second male terminal extending through an opening formed in said end cap adjacent said first male terminal, said terminal member having an integral axially extending flange, a stud integral with said end cap staked into engagement with a portion of said first brush holder and a portion of said terminal member for securing said first brush holder and terminal member to said end cap, said second brush holder having an integral axially extending flange substantially aligned with said axially extending flange of said terminal member, a circuit breaker assembly having planar end portions engaging respectively the flange on said terminal member and the flange on said second brush holder, and a C-shaped clip located at each end of said circuit breaker assembly and contacting respectively a flange and a planar end portion of said circuit breaker assembly for clamping said circuit breaker assembly to said flanges.

Claim 7

An end cap assembly for a direct current motor comprising, a one-piece end cap formed of insulating material, first and second electrically conductive metallic brush holders each having a generally U-shaped brush retaining portion supported by said end cap, said U-shaped portions and said end cap defining brush retaining chambers, said first metallic brush holder having an integral first male terminal extending axially through an opening in said end cap, a terminal member having a second male terminal extending through an opening formed in said end cap, said terminal member having an integral axially extending flange, a stud integral with said end cap staked into engagement with a portion of said first brush holder and a portion of said terminal member for securing said first brush holder and said terminal member to said end cap, said second brush holder having an integral axially extending flange substantially aligned with said axially extending flange of said terminal member, a circuit breaker assembly having planar end portions engaging respectively the flange of said terminal member and the flange on said second brush holder, a C-shaped clip located on each end of said circuit breaker assembly and contacting respectively a flange and a planar end portion of said circuit breaker assembly for clamping said circuit breaker assembly to said flanges, a brush disposed in each brush holder, and a brush spring engaging a respective brush at one end thereof and engaging bent over integral tabs of said brush holder at the other end thereof, each brush spring adapted to urge a brush radially into contact with a rotary element of a dynamoelectric machine and serving to electrically connect a metallic brush holder to a brush.

Claim 8

An end cap assembly for a direct current motor comprising, a one-piece end cap formed of insulating material, first and second electrically conductive metallic brush holders each having a generally U-shaped brush retaining portion supported by said end cap, said U-shaped portions and said end cap defining brush retaining chambers, said first metallic brush holder having an integral first male terminal extending axially through an opening in said end cap, a terminal member having a second male terminal extending through an opening formed in said end cap, said terminal member having an integral axially extending flange, a stud integral with said end cap staked into engagement with a portion of said first brush holder and a portion of said terminal member for securing said first brush holder and said terminal member to said end cap, said second brush holder having an integral axially extending flange substantially aligned with said axially extending flange of said terminal member, a circuit breaker assembly having planar end portions engaging respectively the flange of said terminal member and the flange on said second brush holder, a C-shaped clip located on each end of said circuit breaker assembly and contacting respectively a flange and a planar end portion of said circuit breaker assembly for clamping said circuit breaker assembly to said flanges, a brush disposed in each brush holder, and a brush spring engaging a respective brush at one end thereof and engaging bent over integral tabs of said brush holder at the other end thereof, each brush spring adapted to urge a brush radially into contact with a rotary element of a dynamoelectric machine and serving to electrically connect a metallic brush holder to a brush.