Brush holder assembly for dynamoelectric machines

Claim 2

A brush holder for a dynamoelectric machine having a housing, a rotor assembly carried by a shaft journaled for rotation in said housing including a winding and a rotating contact assembly connected to said winding, said brush holder comprising: a support plate mounted on an internal wall of said housing; a brush-holding receptacle carried by said support plate adjacent said rotating contact member; a brush having a shunt wire, said brush being mounted in said brush-holding receptacle and slidable therein between a retracted position and an extended position with said shunt wire extending externally of said brush-holding receptacle; resilient means for biasing said brush to said extended position for engagement with said rotating contact assembly; an electrical terminal of the machine attached to said shunt wire; and a yieldable clip formed integrally on said support plate, said yieldable clip extending between said brushholding receptacle and said electrical terminal and being movable between a first axial position and a second axial position, said yieldable clip extending across the path of said shunt wire in said first axial position to engage said shunt wire so as to hold said brush in said retracted position, and said yieldable clip being removed from said path of said shunt wire in said second axial position, whereby said yieldable clip is movable from said first axial position to said second axial position to disengage said shunt wire and release said brush to said extended position.

Claim 3

A brush holder for a dynamoelectric machine having a housing, a rotor assembly carried by a shaft journaled for rotation in said housing including a winding and a rotating contact assembly connected to said winding, said brush holder comprising: a support plate including a mounting portion and a radial section extending from an outer edge of said mounting portion, said mounting portion being attached to one end of said housing; a brush-holding receptacle including side portions carried by said radial section adjacent said rotating contact member; a brush having a shunt wire extending from one end thereof, said brush being mounted in said brush-holding receptacle and slidable therein between a retracted position and an extended position with said shunt wire extending across one of said side portions; resilient means for biasing said brush to said extended position toward engagement with said rotating contact assembly; an electrical terminal of the machine carried by said radial section of said support plate and located arcuately from said one of said side portions, said terminal being attached to the free end of said shunt wire at a predetermined distance from said brush; and a yieldable clip including a wire engaging projection and finger member formed integrally in said radial section so as to be movable between a first axial position and a second axial position, said wire engaging projection extending axially between said brush-holding receptacle and said electrical terminal and being engageable with said shunt wire when in said first axial position so as to hold said brush in said retracted position and being withdrawn from the path of said shunt wire when in said second axial position, said finger member being manually movable to move said wire engaging projection from said first axial position to said second axial position whereby Said shunt wire is released to thereby permit said brush to move to said extended position.

Claim 4

A brush holder for a dynamoelectric machine having a housing, a rotor assembly carried by a shaft journaled for rotation in said housing including a winding and a rotating contact assembly connected to said winding, said brush holder comprising: a support plate including a mounting portion and a radial section extending from an outer edge of said mounting portion, said mounting portion being attached to one end of said housing; a brush-holding receptacle including side portions carried by said radial section adjacent said rotating contact member; a brush having a shunt wire extending from one end thereof, said brush being mounted in said brush-holding receptacle and slidable therein between a retracted position and an extended position with said shunt wire extending across one of said side portions; resilient means for biasing said brush to said extended position toward engagement with said rotating contact assembly; an electrical terminal of the machine carried by said radial section of said support plate and located arcuately from said one of said side portions, said terminal being attached to the free end of said shunt wire at a predetermined distance from said brush; and a yieldable clip including a wire engaging projection and finger member formed integrally in said radial section so as to be movable between a first axial position and a second axial position, said wire engaging projection extending axially between said brush-holding receptacle and said electrical terminal and being engageable with said shunt wire when in said first axial position so as to hold said brush in said retracted position and being withdrawn from the path of said shunt wire when in said second axial position, said finger member being manually movable to move said wire engaging projection from said first axial position to said second axial position whereby Said shunt wire is released to thereby permit said brush to move to said extended position.

Claim 5

A brush holder for a dynamoelectric machine having a housing, a rotor assembly carried by a shaft journaled for rotation in said housing including a winding and a rotating contact assembly connected to said winding, said brush holder comprising: a support plate mounted on an internal wall of said housing; a brush-holding receptacle including side portions carried by said support plate and radially aligned with said rotating contact member, one of said side portions including an elongated slot; a brush having a shunt wire, said brush being mounted in said brush-holding receptacle and slidable therein between a retracted position and an extended position with said shunt wire extending through said elongated slot; resilient means for biasing said brush to said extended position toward engagement with said rotating contact assembly; an electrical terminal carried by said support plate and arcuately spaced from said one of said side portions with one end of said electrical terminal being connected to said shunt wire; and a yieldable clip formed integrally on said support plate including a cantilever supported arm terminating in a movable free end and extending between said brush-holding receptacle and said electrical terminal, one portion of said free end including a wire engaging projection adapted to extend across the path of said shunt wire for engaging said shunt wire when said arm is in a first axial position so as to hold said brush in said retracted position, said free end further including a finger member aligned with an exposed axial space which is formed after assembling said rotor assembly to one end of said housing, and further being adapted to be manually engaged to move said arm to a second axial position where said aire engaging projection is removed from said path of said shunt wire, whereby manual movement of said arm from first axial position to said second axial position disengages said shunt wire and releases said brush to said extended position.

Claim 6

A brush holder for a dynamoelectric machine having a housing, a rotor assembly carried by a shaft journaled for rotation in said housing including a winding and a rotating contact assembly connected to said winding, said brush holder comprising: a support plate mounted on an internal wall of said housing; a brush-holding receptacle including side portions carried by said support plate and radially aligned with said rotating contact member, one of said side portions including an elongated slot; a brush having a shunt wire, said brush being mounted in said brush-holding receptacle and slidable therein between a retracted position and an extended position with said shunt wire extending through said elongated slot; resilient means for biasing said brush to said extended position toward engagement with said rotating contact assembly; an electrical terminal carried by said support plate and arcuately spaced from said one of said side portions with one end of said electrical terminal being connected to said shunt wire; and a yieldable clip formed integrally on said support plate including a cantilever supported arm terminating in a movable free end and extending between said brush-holding receptacle and said electrical terminal, one portion of said free end including a wire engaging projection adapted to extend across the path of said shunt wire for engaging said shunt wire when said arm is in a first axial position so as to hold said brush in said retracted position, said free end further including a finger member aligned with an exposed axial space which is formed after assembling said rotor assembly to one end of said housing, and further being adapted to be manually engaged to move said arm to a second axial position where said aire engaging projection is removed from said path of said shunt wire, whereby manual movement of said arm from first axial position to said second axial position disengages said shunt wire and releases said brush to said extended position.

Claim 7

A brush holder for a dynamoelectric machine having a housing, a rotor assembly carried by a shaft journaled for rotation in said housing including a winding and a rotating contact assembly connected to said winding, said brush holder comprising: a support plate including a mounting ring for securing said brush holder on an internal wall of said housing and further including a radial section extending from an outer side of said mounting ring; an insulating board fastened to said radial section; a pair of brush-holding receptacles including side portions carried by said insulating board and radially aligned with said rotating contact member, one of said side portions of each brush-holding receptacle including an elongated slot; a pair of brushes having shunt wires attached to the outer ends thereof, each of said brushes being mounted in one of said brush-holding receptacles and slidable therein between a retracted position and an extended position with said shunt wires extending through said elongated slots; resilient means for biasing each of said pair of brushes to said extended position for engagement with said rotating contact assembly; a pair of electrical terminals carried by said support plate so that each is spaced adjacent one of said side portions with each of said electrical terminals being connected to a shunt wire of an adjacent brush; and a pair of yieldable clips formed integrally in said radial section including a pair of cantilever supported arms terminating in free ends whereby each of said yieldable clips extends separately between one of said brush-holding receptacles and an adjacent electrical terminal, said free ends including wire engaging projections extending through said insulating board and being adapted to engage said shunt wire when said arm is in a first axial position so as to hold said brush in said retracted position, said free ends further including finger members aligned with an exposed axiAl space which is formed after assembling said rotor assembly to one end of said housing, and further being adapted to be engaged by a tool inserted through said exposed axial space to manually move said arms to a second axial position where said wire engaging projections are removed from the path of said shunt wire, whereby yielding movement of said arm from said first axial position to said second axial position disengages said shunt wire and releases said brush to said extended position for engagement with said rotating contact assembly.

Claim 8

A brush holder for a dynamoelectric machine having a housing, a rotor assembly carried by a shaft journaled for rotation in said housing including a winding and a rotating contact assembly connected to said winding, said brush holder comprising: a support plate including a mounting ring for securing said brush holder on an internal wall of said housing and further including a radial section extending from an outer side of said mounting ring; an insulating board fastened to said radial section; a pair of brush-holding receptacles including side portions carried by said insulating board and radially aligned with said rotating contact member, one of said side portions of each brush-holding receptacle including an elongated slot; a pair of brushes having shunt wires attached to the outer ends thereof, each of said brushes being mounted in one of said brush-holding receptacles and slidable therein between a retracted position and an extended position with said shunt wires extending through said elongated slots; resilient means for biasing each of said pair of brushes to said extended position for engagement with said rotating contact assembly; a pair of electrical terminals carried by said support plate so that each is spaced adjacent one of said side portions with each of said electrical terminals being connected to a shunt wire of an adjacent brush; and a pair of yieldable clips formed integrally in said radial section including a pair of cantilever supported arms terminating in free ends whereby each of said yieldable clips extends separately between one of said brush-holding receptacles and an adjacent electrical terminal, said free ends including wire engaging projections extending through said insulating board and being adapted to engage said shunt wire when said arm is in a first axial position so as to hold said brush in said retracted position, said free ends further including finger members aligned with an exposed axiAl space which is formed after assembling said rotor assembly to one end of said housing, and further being adapted to be engaged by a tool inserted through said exposed axial space to manually move said arms to a second axial position where said wire engaging projections are removed from the path of said shunt wire, whereby yielding movement of said arm from said first axial position to said second axial position disengages said shunt wire and releases said brush to said extended position for engagement with said rotating contact assembly.