Abstract: A power tool includes a motor having a can and a shaft extending axially from the can, a gear case having an inner surface that defines an opening, a bearing positioned around a portion of the shaft that extends from the can and at least partially within the opening in the gear case, and a motor mount coupled to the motor. The motor mount includes a flange extending away from the motor. The flange of the motor mount and the inner surface of the gear case axially and laterally locate the motor and the gear case on the bearing.

Abstract: The present invention relates to synchronous motor comprising a cylindrical rotor (4) provided with permanent magnets (3) located inside a cylindrical stator provided with a winding (U, V, W), characterized in that the rotor is provided with protuberances (41) facing the said winding.

Abstract: Apparatus and methods for providing a pre-determined axial thrust force profile for use in a rotating machine that includes a magnetically permeable rotor with first and second surfaces and a generally perpendicular shaft is disclosed. One or more bearings support the shaft and a coil induces flux in the rotor. First and second pole pieces disposed adjacent to the first and second surfaces define first and second gaps. A series magnetic circuit including the pole pieces, the gaps and the rotor carries flux generated by current flowing in the coil. Pole pieces and gaps provide substantially similar reluctance in both gaps. Magnetic saturation characteristics of a series magnetic circuit may provide a pre-determined axial force profile as a function of coil current. A first magnetic saturation characteristic may provide a maximum axial force at a first current magnitude. A second magnetic saturation characteristic may provide a lower axial force at a current greater than the first current.

Abstract: A housing of a driving device, in particular an electric motor adjustment drive for a motor vehicle, has a housing opening, which is covered by a gas-permeable membrane, in particular a membrane that is impermeable to liquid. The housing opening is surrounded by a collar contour, which is interrupted locally at the circumference and within which the membrane lies.

Abstract: A linear actuator is provided with an outer tube and an inner tube inserted in the outer tube so as to be free to slide. The linear actuator is also provided with a rod erected at a central axis part of the inner tube and forming an annular space between the rod and the inner tube, a rod guide provided at an extreme end of the rod in sliding contact with an inner surface of the outer tube, a plurality of permanent magnets arranged along an axial direction in the rod, and a plurality of coils retained by the outer tube so as to face the permanent magnets. A cross-sectional area of an outer periphery of the inner tube along which the outer tube slides and a cross-sectional area of an inner periphery of the outer tube along which the rod guide slides are set to be equal.

Abstract: An electric motor for a motor-driven compressor is provided. The electric motor includes a stator and a rotor. The stator is fixed to a housing. The rotor is arranged outward of the stator. The rotor is mounted on a rotary shaft to rotate integrally with the rotary shaft. The stator includes slots and a stator coil wound about the slots. The rotor includes a rotary support and a magnet. The rotary support is fixed to the rotary shaft to rotate integrally with the rotary shaft. The magnet is supported by the rotary support. The arrangement of the magnetic poles of the magnet in the circumferential direction is a Halbach array.

Abstract: A varying capacitance rotating electrical machine provides capacitor elements, such as capacitor plates, that move with respect to each other as separated by a thin film of fluid, for example air, on which one capacitor element floats. In one embodiment, multiple plates provide for three-phase operation. Narrow gaps provided by the floating capacitor elements increase the power density of rotating electrical machine.

Abstract: In a circuit board, a control pattern portion in which control circuit patterns are formed and a drive pattern portion in which drive circuit patterns are formed are formed in different regions. A recessed portion is formed in a base, and the drive pattern portion is fixed to the base such that insulation between a drive circuit and the base is maintained and the control pattern portion is arranged above the recessed portion. In this way, a space in which a circuit element is able to be mounted is formed between the control pattern portion and the recessed portion.

Abstract: Embodiments of the invention provide a pump assembly including a pump, a motor, and a baseplate. The pump includes a valve housing and an upper housing with a ring to separate an inlet chamber from an outlet chamber. An o-ring is positioned between raised outer walls of the ring and secured by a cutout of the valve housing. The motor includes a brush ring assembly with brush holders and torsion springs urging brushes through the brush holders. The baseplate includes a cutout capable of allowing the use of a clamp or a wrap to couple the baseplate to the motor.

Abstract: A method for making an actuator includes forming a substantially planar actuator device of an electrically conductive material, the device incorporating an outer frame, a fixed frame attached to the outer frame, a moveable frame disposed parallel to the fixed frame, a motion control flexure coupling the moveable frame to the outer frame for coplanar, rectilinear movement relative to the outer frame and the fixed frame, and an actuator incorporating a plurality of interdigitated teeth, a fixed portion of which is attached to the fixed frame and a moving portion of which is attached to the moveable frame, moving the moveable frame to a deployed position that is coplanar with, parallel to and spaced at a selected distance apart from the fixed frame and fixing the moveable frame at the deployed position for substantially rectilinear, perpendicular movement relative to the fixed frame.

Abstract: The invention relates to a starter device (10) for cranking an internal combustion machine in a vehicle, having a pinion shaft (202) comprising a cranking pinion (22) at the front end and a pinion shaft (204) at the opposite end, slidingly guided and supported on a drive shaft (44) of the starter device (10) and received in a bearing by a bearing shell (210) of the starter device (10), characterized in that the cranking pinion (22) has a solid lubricant coating (216) at least in the area of the circumferential toothing (143).

Abstract: An alternator includes a B+ bolt, rectifier B+ terminals, a bus having bends respectively surrounding ones of the rectifier B+ terminals and having an end formed into a ring terminal, and a stop, where the bus ring terminal is placed onto the B+ bolt and a load cable ring terminal may be placed onto the B+ bolt in direct contact with the bus ring terminal and secured thereto by the stop. A method of connecting B+ on an alternator includes bending a copper bus conductor so that one side of the bus conductor surrounds and abuts each of the rectifier B+ terminals, shaping one end of the bus conductor into a ring terminal, and placing the ring terminal of the bus conductor onto the B+ stud. A method includes coupling the B+ terminals and the B+ stud together with a copper bus conductor, and cooling the copper bus conductor.

Abstract: A structure which enables highly accurate detection of the temperature of the stator windings of a dynamo-electric machine. A terminal base (12) integrated with a stator by resin molding is provided with: positioning sections (13, 14, 15) for three-phase stator windings (100, 101, 102); and a positioning section (16) for a thermistor (17). The positioning section (16) is disposed between the positioning sections (14, 15). The thermistor (17) is insert molded on the terminal base (12).

Abstract: A controller-integrated electric rotating machine according to the present invention is provided with a heat sink on which a plurality of power modules included in an electric-power conversion circuit are mounted, a power-input/output conductor that is fixed to a bus bar electrically connected with a DC power source and is electrically connected with the DC power source and the bus bar, and a case, made of an insulator, that is fixed to the heat sink and is provided with a terminal that is electrically connected with the bus bar and the plurality of power modules; the bus bar is provided with a single electric connection portion and at least one mechanical connection portion other than the electric connection portion, electrically connected with the terminal by means of the single electric connection portion, and mechanically connected with the heat sink or the bracket through an insulating material by means of the at least one mechanical connection portion.

Abstract: A rotating electric machine includes a rotor, having a rotor laminate stack extending in the direction of a machine axis and having a rotor winding, the rotor winding forming a winding head at each of the ends of the rotor laminate stack, said winding head being fastened to a winding head rim, which is arranged concentrically within the winding head and adjoins the rotor laminate stack in the axial direction, in order to intercept centrifugal forces by means of bolts passing radially through the winding head, and a fastening designed to safely absorb axial expansions of the winding head. Simple and secure fastening is achieved by virtue of the bolts being fastened to the winding head rim in each case on a T-shaped hammer profile, which extends in the axial direction and is mounted in axially movable fashion in an associated axial T-shaped slot in the winding head rim.

Abstract: A pump motor assembly operable to provide driving power to a fluid pump includes a rotor, a stator, a case housing the rotor and the stator, and a control assembly mounted to the case and operable to control motor operation. The control assembly includes an information display and a cover overlying the display, with a window section in general alignment with the display. The control assembly also includes a filler plate underlying the window section to prevent any air gap along an underside thereof, allowing the display to be visible while reducing the risk of condensation buildup. The control assembly further includes a low voltage housing with the display disposed in a first compartment defined thereby, and a high voltage housing with a high voltage component disposed in a second compartment defined thereby.

Abstract: A method for securing a plurality of permanent magnets about a perimeter of a rotor core is described that includes positioning the plurality of magnets with respect to the rotor core, the magnets including at least one feature formed at each side thereof, each feature opposing a feature formed in an adjacent magnet, and applying a material between the magnets that engages the features formed in the magnets to form a molded material, the material extending into a groove formed within the rotor core such that the molded material operates to engage the rotor core, the engagement of the molded material with the rotor core and the engagement of the molded material with the magnets operative to maintain a position of the magnets with respect to the rotor core.

Abstract: Micro-Electro-Mechanical System (MEMS) structures, methods of manufacture and design structures are provided. The method of forming a MEMS structure includes forming fixed actuator electrodes and a contact point on a substrate. The method further includes forming a MEMS beam over the fixed actuator electrodes and the contact point. The method further includes forming an array of actuator electrodes in alignment with portions of the fixed actuator electrodes, which are sized and dimensioned to prevent the MEMS beam from collapsing on the fixed actuator electrodes after repeating cycling. The array of actuator electrodes are formed in direct contact with at least one of an underside of the MEMS beam and a surface of the fixed actuator electrodes.

Abstract: The electric machine has a stator with windings connected to phase connections. An insulating cap protects the reciprocally connected portions of the phase connections and windings. The insulating cap has a box-shaped body with an opening for the introduction of a winding within it. The body defines a seat housing the phase connection. The seat is formed in one piece with the body.

Abstract: A temperature controlled electric shoe that includes a generator configured to convert the kinetic energy of ambulation into electrical energy by means of a compressible heel section moving between a compressed position and a decompressed position, wherein a crank gear rotationally engages a spindle gear to rotate a circular magnet about a copper coil, whereby electrical energy is storable by means of a battery, said electrical energy therefore usable to heat a toe cap disposed within the shoe and power extant electronic accoutrements interconnected to the shoe by means of a plug connect, and wherein the compressible heel section further forces airflow selectively into the shoe interior, as desired, and alternately vents said airflow exteriorly to the shoe when a switch-valve is moved between a first valve position and a second valve position and a person wearing the shoe perambulates.