Abstract: A vehicular starting and charging rotary electric machine includes a rotor, a stator, brackets, a brush, and a rotation detection sensor. The rotor has a field winding. The stator has a stator winding. The brackets supports the rotor and the stator. One end of the brush is brought into contact with the rotor to supply field current to the field winding of the rotor. The rotation detecting sensor is arranged coaxially with a rotating shaft of the rotor, for detecting a state of the rotor and functioning as a motor or a generator. The magnetic pole position detecting sensor is integrally fixed to the bracket.

Abstract: A vehicle alternator is disclosed as having a stator having a stator winding, a rotor carried on a rotary shaft and rotatably supported inside an inner periphery of the stator, an electric device involving a rectifier for converting an AC voltage, induced in the stator winding, into a DC voltage, and a protector cover for covering the electric device. The protector cover includes a cover body, placed in a position to cover the electric device involving the rectifier, and a cover convex portion extending outward from the cover body along an axis of the rotary shaft of the rotor. The cover convex portion has an inside formed with an open space in which no electric device is disposed.

Abstract: A motor assembly includes a commutator having a shaft extending axially therefrom, a commutator end bracket assembly, and at least two brushes carried by the commutator end bracket assembly and in contact with the commutator. A disc is carried by the commutator for rotation therewith. The commutator includes a notch and the disc is rotatable therein.

Abstract: In a motor-driven tool, a carbon brush part 8 is arranged between a suction port 6 and a commutator 11 of the motor and includes a cylindrical side wall 8a. The cylindrical side wall 8a located on an outer periphery of the commutator 11 is provided with a tapered portion 8b which grows wider toward the commutator 11 and grows narrower toward a coil end 10 of the armature. Between the carbon brush part 8 and the coil end 10, there is provided a heat radiating plate 4 made of metal and adapted to be engaged with the carbon brush part 8.

Abstract: A carbon brush holder for use in a motor includes a holder body and a constant force spring rack. The holder body has a carbon brush accommodation hole for accommodating a carbon brush therein and two receiving holes in communication with the carbon brush accommodation hole. The a constant force spring rack has a base panel affixed to an end face of the holder body with screws and two parallel support arms extending from the base panel and inserted into the receiving holes of the holder body for supporting a constant force spring member to keep the constant force spring member in contact with the carbon brush that is accommodated in the carbon brush accommodation hole such that carbon brush can be kept in close contact with a rotor conduction copper ring of a motor.

Abstract: A motor assembly having improved flux properties comprises a rotor lamination rotatably disposed within a field lamination. The field lamination comprises a constant cross-sectional dimension, and is configured to provide a pair of opposed, tapered yokes that provide constant impedance to the rotor lamination. The rotor lamination includes a plurality of spaced teeth that are dimensioned so that taper of the yokes changes by a factor of the width of one of the teeth, thereby reducing the material needed to adequately carry the magnetic flux of the rotor lamination.

Abstract: A cooling airflow introducing guide portion is disposed on a portion of a connector that faces fins of a voltage regulator heatsink so as to extend in a direction of array of the fins so as to ensure a predetermined clearance relative to the fins. An air intake aperture is disposed through a portion of the rear bracket that faces the voltage regulator heatsink.

Abstract: A method of providing RFI suppression in a DC motor provides a universal terminal bar structure 70 including a positive terminal bar 72 and a negative terminal bar 76, a first choke 80 electrically connected with the positive terminal bar, a second choke 82 electrically connected with the negative terminal bar, a first ground connection 86 constructed and arranged to electrically connect the positive terminal bar to ground, a first breakable section A between the first ground connection and the positive terminal bar, a second ground connection 88 constructed and arranged to electrically connect the negative terminal bar to ground, and a second breakable section B between the second ground connection and the negative terminal bar. Capacitor structure 90 is attached to the terminal bar structure, and the first breakable section is selectively broken, alone or in combination with the second breakable section to provide versatile RFI suppression.

Abstract: In a direct cranking electric rotary machine as an axial air-gap motor having an improved configuration mounted on a vehicle, a stator is faced to an end part on a surface of a rotor. The rotor also acts as a flywheel for an engine mounted on the vehicle. The length of a circumference of the stator is limited below 180 deg. of its entire circumference. This configuration enables a repair man to easily detach and repair components forming the direct cranking electric rotary machine.

Abstract: A brush holder in a tandem vehicle alternator for a vehicle is composed mainly of a primary brush holder and a secondary brush holder accommodating plural brushes, respectively. The primary and secondary brush holders are independently formed. During a step of producing a brush assembly and of mounting the brush assembly on the tandem vehicle alternator, both of the primary and secondary brush holders are integrated into a single brush holder and tightly fastened by welding using a connection metal member.

Abstract: A contact element holder, in particular a brush holder for commutator or wiper ring machines, has a carrier that can be secured to the machine housing and at least one quiver, held on the carrier and pointing toward the rotor, for displaceably receiving a contact element, and also has decoupling elements which are disposed between the carrier and the quiver. To achieve good noise decoupling of the contact element from the machine housing and, in use in a commutator machine, for assuring good commutation quality, the decoupling elements are embodied and disposed such that the at least one quiver is capable of executing only a limited rotational pivoting distance about the rotor.

Abstract: A motorized reduction gear intended for functional equipment of a vehicle includes a rotor having with a rotor shaft bearing a commutator, a reduction gearbox containing a gearwheel engaged with a worm belonging to the shaft, and a magnetic ring attached to the commutator and mounted on the shaft to count the number of shaft rotations. The ring can be attached to the commutator in various ways, for example by overmolding the ring on the body such that the ring lies over virtually the entire length of the body. Hooks that retain the electrical connection of the rotor are attached to the magnetic ring. The attachment of the ring directly on the commutator, of which the ring forms an integral part, makes it possible to ensure reliable and lasting retention of the ring.

Abstract: A brush holding apparatus is mounted to an inner wall surface of a rear bracket and a cap mounted to a head portion of a brush holder portion is exposed through an opening in the rear bracket. Brushes are housed inside brush insertion apertures of the brush holder portion and are placed in elastic contact with slip rings by springs. An abrasion detection terminal is insert molded into the brush holder portion, a contact thereof projecting inside one of the brush insertion apertures and coming into contact with the corresponding spring when the brushes are abraded by a predetermined amount.

Abstract: A fuel pump includes a pump device for pumping fuel. The fuel pump further includes a motor device that has a commutator and an armature including a shaft. The commutator commutating electricity supplied to the armature for rotating the armature to drive the pump device. The fuel pump further includes a brush supplying electricity to the armature by making contact with the commutator. The fuel pump further includes a bearing member supporting the shaft. The fuel pump further includes a holder including a partition wall for supporting the bearing member. The partition wall electrically insulates the bearing member from the brush. The bearing member has a first bearing end surface on a side of the commutator. The partition wall has a wall end surface on a side of the commutator. The first bearing end surface is on an opposite side of the commutator with respect to the wall end surface.

Abstract: The invention relates to an arrangement for holding and/or guiding and applying power to a carbon brush (16, 18) in the direction of a current-transferring commutator (14) comprising a first spring element (20), which acts upon the side of the carbon brush facing away from the contact surface. To ensure that the carbon brush is supplied with the necessary pressure in the direction of the commutator, it is suggested that a second spring element (52, 56, 56), which supplies power to the carbon brush (16, 18) in the direction of the commutator (14), act upon the first spring element (20).

Abstract: The present invention is constituted such that a motor is small in size and can be mounted simply, with a sure electrical connection by means of power terminals. There is provided a terminal seat made of insulating resin fitted and fixed to one end of a motor housing, a pair of support pins are held by the terminal seat so as to project in a direction approximately parallel to a surface of a circuit board and in a cylinder axial direction of the motor housing from the end surface of the terminal seat, respective leads of a motor drive circuit are provided in a plane direction perpendicular to the cylinder axial direction of the motor housing so as to come out from the terminal seat, and there are provided a pair of torsion coil springs as the power terminals that have central spirals fitting over the axes of support pins, ends projecting outward from the terminal seat as points of contact with power supply lands, and opposite ends connected to leads.

Abstract: An electric motor assembly device includes a carrier member with a central passage that receives a rotor shaft with a commutator. Brushes secured onto flexible, brush holders urge the brushes towards the central passage into a contact position with the commutator. The carrier member has mechanical elements for restraining the brush holders in an assembly position for assembly where the brushes clear the central passage and are protected against impact by the carrier member. This arrangement allows the rotor shaft to be introduced into the central passage of the carrier member without a risk of damaging the brushes. The brush holders are easily released automatically from the mechanical elements on the electric motor assembly device to bring the brushes into the contact position.

Abstract: The rear cover of a vehicle-use AC generator is integrally formed with a portion that is shaped to enclose at least a part of a circumferentially extending region around the slip rings of the generator. Hence the rear cover, alone or in combination with an appropriately shaped brush holder, serves to seal the region of contact between the slip rings and brushes against intrusion of foreign matter, without the use of sealing members for preventing such intrusion.

Abstract: The brush holding device includes a brush holder having a brush-housing chamber, and a holder plate to which the brush holder is attached. The holder plate is formed with a center hole at a center portion thereof, the center hole having a size allowing a commutator to path therethrough, and a pair of elongated holes opposing to each other with respect to the opening portion, the elongated holes defining bridge portions with the opening hole. The brush holder has a thick-wall portion integral with a bottom wall of the brush-housing chamber, the thick-wall portion being formed with fitting grooves at lateral sides thereof. The bridge portions are inserted into the fitting grooves so that the brush holder is fitted to the holding plate in such a state that the thick-wall portion is caught between the bridge portions.

Abstract: A brush device assembled in a vehicular alternator is composed mainly of a pair of brushes, a pair of springs, and a brush holder. The brush holder accommodates the brushes and the springs. The springs push the brushes toward slip rings placed on and fixed to a rotary shaft of a rotor. A slant-line mark is drawn on a surface of the brush by paint. The direction of this mark is slanted to, not perpendicular to and not parallel to, the direction of pushing the brush toward the rotary shaft of the rotor. According to the proceeding of wear of the brush, the slant-line mark on the surface of the brush faced and contacted to the slip ring is shifted toward the right direction. An observer observes the position of the slant-line mark and recognizes the proceeding of wear and the optimum time to replace the brush with a new brush.

Abstract: A brush device having the longitudinal direction of a coil shaped coil spring aligned with the face of a brush holder, in which one end of a support post at the surface of a brush base is formed as a hollow cylinder and a projection at the other end is insert molded into the brush holder. There is a step on the support post. The step and the brush holder receive a cover plate which, when viewed from a direction perpendicular to the face of the brush holder, covers a winding of the coil shaped coil spring. One end of the support post is fixed to the surface of the cover plate by spreading the end of the hollow cylinder of the support post.

Abstract: A motor has a plurality of excitation coils, a commutator having a plurality of segments, a plurality of supply brushes and a short-circuit line. Each coil is connected to corresponding ones of the segments. The supply brushes include a plurality of supply brushes each having one of an anode and a cathode. At least one supply brush has the other one of an anode and a cathode. The supply brushes each simultaneously contact different one of the segments. The short-circuit line short-circuits segments that simultaneously contact the supply brushes of the same pole. The supply brushes of the same pole separate from the short-circuited segments at different times.

Abstract: This brush holder assembly for an electric machine includes a bearing-forming metal end cap (26) intended to be mounted on a carcass of the machine, and a set of members (28, 30, 32, 34) for electrical connection of the brushes mounted on the end cap (26) by means of rivets (50, 52) which each include a shank extending from one of the pieces consisting of the end cap and one of the members, passing through an orifice formed in the other piece and folded over against the latter. The shank is made of the same material as the piece from which it extends and includes a closed head.

Abstract: An electric-motor driven actuator has a housing, in which a motor and a carrier plate are arranged and the carrier plate is connected in a fixed manner to a brush holder. The brush holder has a first brush holder which is rigidly connected to the carrier plate. A second brush holder component is also provided which is mechanically coupled to the first brush holder component and is decoupled in a vibration-neutralizing manner from the first brush holder component via at least one damping element and which holds brushes via which contact can be made with a commutator of the motor.

Abstract: A DC motor includes a rotor which is mounted in a housing so that it can rotate about an axis. The rotor includes at least one winding to which direct current is applied from the outside in alternating directions via a commutator, which is arranged on the rotor. Brushes are seated on the commutator and are mounted whereupon they can move relative to the commutator while being pushed by spring pressure onto the commutator.

Abstract: A commutator housing for an electric motor includes a support to receive a commutator having at least two integrated stops and at least two brushes each fixed on a spring component. The spring components force the brushes into a contact position against the commutator. The stops hold the spring components in a mounting position in which the brushes are distanced from the contact position.

Abstract: An automotive alternator includes a rear frame having a rear end wall and a cover member covering a brush device. The cover member is connected to the rear end wall of the rear frame, and a vibration-absorbing member made of a rubber material is disposed between the rear end wall and the cover member. The vibration-absorbing member has a cylindrical portion disposed between a center opening of the rear end wall and an extending portion of the cover member and a rear disc portion disposed between the rear end wall and a front surface of the cover member. The cylindrical portion is compressed in the radial direction while the rear disc portion is compressed in the axial direction, thereby alleviating vibration of the brush device in both the radial and the axial directions.

Abstract: A magnet (10) that is an annular member is fixed or secured on an outer circumference surface or an inner circumference surface of a yoke (4) that is a cylindrical member. An lower end surface in the axial direction of the magnet is fixed or secured to the same plane as a lower end surface in the axial direction of the yoke (4), or the lower end surface in the axial direction of the magnet is fixed or secured so as to protrude a little from the lower end surface in the axial direction of the yoke. An annular groove (4a) that is recessed outward in the radial direction or inward in the radial direction is formed on a part of the outer circumference surface or the inner circumference surface that is continuous to the yoke (4).

Abstract: An electric motor, in particular a motor and gear box unit for activating functional equipment in a vehicle, includes a rotor shaft carrying a commutator co-operating with conductive brushes disposed in brush supports fixed to a printed circuit card; the motor is provided with means for enabling brush supports to be fixed to the printed circuit card solely by surface mounting. These means may comprise, for each brush, a metal casing containing the brush and having one wall with at least one transverse tab adapted to pass through the printed circuit card in order to position and hold the casing on the card and in order to provide an electrical connection. The invention enables brush-support devices to be fixed to the printed circuit card solely by surface mounting, thus making it pointless to perform an additional flow soldering operation as is required in the prior art.

Abstract: A power tool includes an electric motor (6) located in the tool housing (4) and capable of rotation in both clockwise and counterclockwise directions, a brush carrier (14) carrying at least two brushes (2) that electrically contacts the commutator (12) of the motor (6), an actuation member (26) accessible from outside of the housing (4) for rotating the brush carrier (14) relative to the housing (4) in a circumferential direction (U) of the commutator (12) between clockwise rotational position and counterclockwise rotational position, and a device for preloading the brush carrier (14) in both clockwise and counterclockwise rotational positions and having at least one spring member (32) for biasing the brush carrier (14) both in the circumferential direction (U) and the axial direction of the commutator (12).

Abstract: A connection part between brush side terminals and power side terminal pieces is disposed at either of positions L and R located laterally next to an axis of a motor and opposed to each other with respect to the axis. Both terminals are connected to each other through a connection unit detachably fitted to the brush side terminals and others and the power side terminal pieces and others. The connection unit has male terminals to be coupled to the brush side terminal and others, female terminals to be coupled to the power side terminal piece and others, and a coil part for noise prevention connecting the male terminal and others to the female terminal and others. The connection part can be set to the position L or R by rotating the brush holder in a circumferential direction, which makes it possible to use the connection unit at any of these positions. Thus, the brush holder unit can be shared in electric motors having a speed reduction mechanism with different specifications to reduce a product cost.

Abstract: This invention discloses a DC motor with externally mounted carbon brushes, comprising a front end cover, a housing, magnet, a rotor, a commutator and a back end cover, characterized in that the outer wall of the back end cover is provided with two mounting holes for brush brackets which are mounted with annular brush brackets having identical structures, a radial sliding tube used to mount the carbon brush is located in said brackets, said carbon brush in the sliding tube for carbon brush contacts the commutator by a spring biasing against a brush cap, the outward end thereof being connected to a copper sheet through a brush shunt, said copper sheet is held against the back end of the sliding tube, a lead wire for a power source is lead out from an outlet of another copper sheet at an outer wall of the sliding tube. The electrical connection of the carbon brush is lead out from the sliding tube through the brush shunt and the copper sheet, therefore the electrical connection is reliable.

Abstract: A dual-nature, uni-constructed device, suitable for conducting electricity between two objects in relative motion, comprises two compatible elements each having a straight section and a sinuous section. The two elements are combined to form a unified whole whereby the two straight sections are mutually servable as a brush component and the two sinuous sections are mutually servable as a spring component. The inventive device is associable with an electrical or electromechanical machine so that, during machine operation, the brush component slidingly contacts a first machine part, the spring component is affixed to a second machine part and exerts a bias against the brush component, and the inventive device conducts electrical current from one machine part to the other machine part. Each element includes an electrically conductive main layer (including one or more wire fabric sheets) and two elastomeric outside layers (on opposite sides of the sinuous section).

Abstract: A universal motor has a brush cage assembly in which a U-shaped clip 34 is located about a wall of a through hole 28 of a bearing bracket 24 for receiving a brush cage 30. The clip 34 has an outer limb 42 with inwardly and rearwardly directed barbs 44 to grip an outer surface of the wall to prevent removal of the clip 34 and an inner limb 36 with outwardly and forwardly directed barbs 42 which resiliently deform as the cage 30 is inserted to snare the cage 30 should it move in the opposite direction. The clip 34 thus prevents withdrawal of the brush cage 30 and provides a lateral spring force against the cage 30 to reduce cage lateral position tolerance and movement.

Abstract: An annular stator holder within a homopolar motor housing is positioned within magnetic fields established by magnet coils positioned in surrounding relation to brushes in sliding contact with the motor rotor. Also enclosed within the stator holder is a slip ring preassembled with the brushes attached thereto on one side by soft-solder joints with the other side attached by hard-solder joints to spring devices for clamping to the stator holder by leaf springs to exert pressure on the brushes thereby maintained in sliding contact with the rotor.

Abstract: A bracket assembly of a universal motor comprises: a bracket composed of a base portion formed as a certain shape and coupled to a motor stator, a plurality of supporting portions extendingly formed at the base portion with a certain length, a bearing mounting portion extendingly formed at an end of the supporting portions with a certain shape and for inserting a bearing thereto, a plurality of holder portions extendingly formed at the base portion with a certain shape and having a heat emission insertion hole therein for inserting a brush and emitting heat, and a plurality of spring mounting portions; brushes respectively inserted into the bracket holder portions; and springs respectively coupled to the spring mounting portions of the bracket, for elastically supporting the brush. In the bracket assembly of a universal motor, the number of components constituting the motor is reduced thereby to greatly reduce the fabrication cost.

Abstract: Devices and methods of use for brush holders are disclosed. A brush holder assembly including a brush catch and a brush release is disclosed. Also illustrated is a brush holder assembly including a first portion in sliding engagement with a second portion. Sliding engagement of the first portion with the second portion may selectively engage and/or disengage a brush catch with a brush. In some embodiments the brush catch is disengaged from the brush when the brush holder is in a locked position and is engaged with the brush when the brush holder is in an unlocked position. Methods and devices for selectively placing a brush holder in a locked or unlocked position are also disclosed.

Abstract: An electrically conductive brush box is located against the upper surface of a base and has crimping tabs located against an oppositely disposed crimping surface. The base is formed of high temperature resistant plastic. A field case housing has a seat with a retention member adapted to retain the base against the seat. A screw is threaded into the field case housing such that the head presses against a surface of the base member to retain the base member in the seat. The screw member is located in non-contacting relationship with the electrically conductive brush box. A spacer member is adapted to space the portion of the crimping tab against the crimping surface away from the field case housing. The brush box includes a biasing member holder and the crimping tabs are located adjacent the holder.

Abstract: A motor apparatus is provided with a yoke housing, a gear housing and a brush holder. A receiving portion of the gear housing receives the worm wheel, etc. therein. The brush holder is interposed between the yoke housing and the gear housing. The worm wheel is provided with a switching plate on one side face thereof, which is in slide contact with contact members. The gear housing is provided with a housing body and a cover. In the housing body is formed a communication hole to communicate an internal spaces of the receiving portion and a yoke housing. The contact members are disposed on the brush holder and on the bottom portion side of the receiving portion with respect to the worm wheel so as to extend through the communication hole into the gear housing.

Abstract: The present invention generally provides a motor-fan unit including a motor assembly having a shaft, a commutator supported on the shaft, and a pair of brushes in electrical contact with the commutator, a fan assembly having an impeller coupled to the shaft, an end plate assembly located between the impeller and the motor assembly, said end plate assembly including a plate portion defining an opening throughwhich the shaft passes, wherein said commutator is located near the opening, and a pair of brush retainers adapted to receive the brushes formed on the plate portion adjacent said commutator, the brush retainers opening toward the fan assembly.

Abstract: A field case housing has a substantially cylindrical wall segment, an end segment and a flange all having a substantially constant wall thickness. The flange has reinforcing ribs connected to the wall segment and aperture reinforcing bosses. The end segment, the wall segment and the flange are formed as a single, integral part adapted to reduce warping of the housing during molding. A cylindrical guide member is located in the field case housing and a conical guide member is located in the fan baffle. The cylindrical guide member is adapted to insure a screw passing through the cylindrical guide member is guided to a point within the conical guide member. The fan baffle has a transverse wall with an aperture and guide walls extending adjacent the aperture. The guide walls are adapted to guide an armature past the magnets without contacting and damaging them.

Abstract: Devices and methods of use for brush holders are disclosed. A brush holder assembly including a brush catch and a brush release is disclosed. Also illustrated is a brush holder assembly including a first portion in sliding engagement with a second portion. Sliding engagement of the first portion with the second portion may selectively engage and/or disengage a brush catch with a brush. In some embodiments the brush catch is disengaged from the brush when the brush holder is in a locked position and is engaged with the brush when the brush holder is in an unlocked position. Methods and devices for selectively placing a brush holder in a locked or unlocked position are also disclosed.

Abstract: An accommodating space is formed on an end surface at a first axial end of a rear bracket so as to envelop an end portion region of a shaft, and a brush holder and a sensor unit are disposed in the accommodating space. A brush connector unit and a sensor connector unit are disposed so as to project out of the accommodating space, and electrical connection between brushes and the brush connector unit and signal connection between the sensor unit and the sensor connector unit are performed inside the accommodating space.

Abstract: A brush card assembly 30 is provided for a permanent magnet brush motor 50. The motor includes a link wound, high speed side commutator 46 and an associated high speed side armature winding 44, and a link wound low speed side commutator 54 and an associated low speed side armature winding 52. The brush card assembly includes a brush card 31 including a high speed side having a positive brush 32 and a negative brush 32? constructed and arranged to be operatively associated with the high speed side commutator 46, and a low speed side opposite the high speed side. The low speed side has a positive brush 33 and a negative brush 33? constructed and arranged to be operatively associated with the low speed side commutator 54. The brushes are constructed and arranged with respect to the commutators to provide at least two different operating speeds of the motor.

Abstract: A brush holding apparatus is mounted to an inner wall surface of a rear bracket and a cap mounted to a head portion of a brush holder portion is exposed through an opening in the rear bracket. Brushes are housed inside brush insertion apertures of the brush holder portion and are placed in elastic contact with slip rings by springs. An abrasion detection terminal is insert molded into the brush holder portion, a contact thereof projecting inside one of the brush insertion apertures and coming into contact with the corresponding spring when the brushes are abraded by a predetermined amount.

Abstract: A holder-side connecting portion 10c provided on a brush holder 10 and a connector-side connecting portion 16b provided on a connector portion 16 are electrically and mechanically connected with each other. The holder-side connecting portion 10c and the connector-side connecting portion 16b are clamped between a yoke housing 4 and a gear housing 21. For this reason, the connecting portions 10c and 16b for connecting the brush holder 10 and the connector portion 16 are prevented from being externally exposed. As a result, the insulation of the connecting portions 10c and 16b can be secured without complicating the construction of the connecting portions 10c and 16b by applying a special seal or the like to the connecting portions 10c and 16b.

Abstract: A motor has a plurality of excitation coils, a commutator having a plurality of segments, a plurality of supply brushes and a short-circuit line. Each coil is connected to corresponding ones of the segments. The supply brushes include a plurality of supply brushes each having one of an anode and a cathode. At least one supply brush has the other one of an anode and a cathode. The supply brushes each simultaneously contact different one of the segments. The short-circuit line short-circuits segments that simultaneously contact the supply brushes of the same pole. The supply brushes of the same pole separate from the short-circuited segments at different times.

Abstract: A motor assembly includes a commutator having a shaft extending axially therefrom, a commutator end bracket assembly, and at least two brushes carried by the commutator end bracket assembly and in contact with the commutator. A seal is carried by either the commutator or the commutator end bracket assembly and has engaging contact with the other. The seal may be disposed on either or both sides of the commutator.

Abstract: A test apparatus assembly is provided for testing an AC generator having an exciter rotor mounted to a shaft. The apparatus includes an annular end bell, a carbon brush assembly coupled to the end bell including a housing coupled to the end bell inner peripheral surface, at least a conduit formed in the housing, and a spring-loaded carbon brush disposed in the conduit, and a slip ring assembly configured to be mounted to the shaft and to at least partially contact the carbon brush that includes a hub configured to couple to the shaft, the hub including an outer peripheral surface and a cavity extending therethrough, a first slip ring coupled to the hub outer peripheral surface, and a wire connector coupled to the first slip ring and extending through the hub cavity, the wire connector configured to electrically couple the first slip ring to the exciter rotor.

Abstract: A brush tube structure 10 is provided for holding a brush 14 of a motor. The brush tube structure includes a base 15 and a plurality of fingers 12 extending from the base in a cantilevered manner and in direction of travel of the brush. The fingers are constructed and arranged to define a brush receiving space, such that when a brush is in the space, the fingers engage the brush.