Abstract: An electric tool includes a housing; a brushless motor, housed in the housing; an output shaft configured to hold a tip tool; a switching circuit controlling the brushless motor; a circuit board; a case, accommodating the circuit board, the case is filled with a resin, wherein the resin covers at least a part of the circuit board; the housing includes a motor housing element and a cover element covering at least a part of the case. The motor housing element includes a motor housing part accommodating the brushless motor, and a fixing part, configured to fix the case to the motor housing by the fixing part abutting the case.

Abstract: An electric work machine includes a smaller motor. An electric work machine includes a motor and a housing accommodating the motor. The motor includes a stator and a rotor rotatable about a rotation axis. The stator includes a stator core, an insulator fixed to the stator core, a plurality of coils fixed to the insulator, and a terminal connected to each of the plurality of coils. The housing includes at least one first tab in contact with at least a part of a surface of the stator. The at least one first tab is at the same position as at least a part of the terminal in an axial direction parallel to the rotation axis.

Abstract: A power tool includes a brushless motor that has a stator including a tubular stator core, a rotor disposed in the tubular stator core, first and second electrically insulating members affixed to opposite ends of the stator core and a plurality of coils. A sensor-circuit board is supported by the first electrically insulating member. The first electrically insulating member is bounded by a first plane perpendicular to the rotational axis and a second plane perpendicular to the rotational axis, and the sensor-circuit board is located between the first plane and the second plane.

Abstract: A power tool including an electric motor is provided. The tool includes a substantially disc-shaped printed circuit board (PCB), power switches mounted on the PCB; magnetic sensors mounted on the PCB facing the motor; a heat sink in thermal communication with the power switches disposed between the PCB and the electric motor; and a molded casing structurally securing the heat sink relative to the PCB. The molded casing includes a center opening, at least one first opening provided at a first radial distance from the center opening arranged to receive the magnetic sensors therein, and at least one second opening provided at a second radial distance from the center opening arranged to securely receive the heat sink therein.

Abstract: A microcomputer stores an offset correction value for correcting an offset of a detected current along with a pulse shift for each of a detected current of a maximum phase to which power is supplied for the longest time among three phases and a detected current of a minimum phase to which power is supplied for the shortest time among the three phases, and corrects the detected current of each of the phases with use of the stored offset correction values for the detected current of the maximum phase and the detected current of the minimum phase.

Abstract: A vibration driver drill as an electric power tool includes a brushless motor that includes a rotor and a sensor circuit board that detects a rotation of the rotor. The rotor includes a tubular rotor core and four permanent magnets held in the rotor core so as to extend in an axial direction of the rotor core. The sensor circuit board is adjacent to a front-end part (first end portion) of the rotor core. The rotor core is provided with a recessed groove on a side surface outward between the mutually adjacent permanent magnets. The recessed groove extends from the front-end part in the axial direction of the rotor core without reaching a rear-end part (second end portion) facing the front-end part.

Abstract: The present invention relates to an electric motor and an electric tool equipped with the electric motor. The electric motor includes a rotor, a stator, a coil module wound around the stator, a Hall unit and a wiring circuit unit. The Hall unit includes a Hall circuit board disposed around a rotating shaft of the rotor, and a Hall module for sensing rotation of the rotor. The wiring circuit unit is independent of the Hall circuit board and includes a three-phase power source interface. The wiring circuit unit electrically connects coils of the coil module to the power source interfaces respectively by groups. By separately disposing the Hall unit and the wiring circuit unit independently, a volume of the Hall circuit board can be reduced, and an area blocking an airflow path of a heat dissipation unit can be reduced, so heat dissipation effect of the electric motor and the electric tool can be improved.

Abstract: Provided is an electrically powered tool having an improved sensor substrate mounting structure, the electrically powered tool being configured so that a brushless type motor is axially contained in a cylindrical housing. The electrically powered tool has: a cylindrical housing for axially containing a motor; a control unit for controlling the motor; and a sensor substrate having mounted thereon a plurality of position detecting elements for detecting the rotational position of a rotor. The sensor substrate is gripped between the insulator of the motor and the housing and held on the housing side when axially mounting the motor. The sensor substrate is annularly shaped and has formed at the center thereof a through-hole through which a bearing for the motor is passed. The portion of the sensor substrate, on which a Hall IC is mounted, is provided with a synthetic resin cover member for protecting the Hall IC against dust.

Abstract: An electric work machine, such as a lawn mower includes a motor case (22) fixed inside a main-body housing (10). A brushless motor (21) is housed inside the motor case (22) and includes a stator (23) having a stator core (40), coils (45), and upper and lower insulators (42, 43), and a rotor (24) disposed inward of the stator (23) and having a rotary shaft (25). A spindle (17) is driven by the rotary shaft (25). The motor case (22) holds the stator (23) and axially supports the rotary shaft (25) via bearings (68, 76). One or more insulating members, such as an insulating cap (67) and/or a resin layer (78), provide electrical insulation between the stator core (40) and the rotary shaft (25).

Abstract: An electronic module is provided for a power tool having an electric motor. The module includes a module housing having a radial portion and a cylindrical portion extending from the radial portion away from the electric motor and defining an open end, a printed circuit board (PCB) received within the module housing through the open end thereof, power switches mounted on the PCB, and magnetic sensors mounted on the PCB facing the motor substantially equidistantly from a center of the PCB. The module housing includes openings disposed in the radial portion angularly around a center of the module housing to receive the magnetic sensors therein to allow the magnetic sensors to magnetically interface with the electric motor.

Abstract: An outer-rotor brushless direct-current (BLDC) motor is provided including a stator core having an aperture extending therethrough, a stator mount including an elongated cylindrical member projecting into the aperture of the stator core, an outer rotor, and a rotor mount including an outer rim arranged to couple to the outer rotor and an inner body supporting an outer race of a motor bearing. A piloting pin is provided including a rear portion received within the hollow portion of the elongated cylindrical member of the stator mount and a front portion received within the inner race of the motor bearing.

Abstract: A stator (25; 25A) includes an insulator (28, 29) held on a stator core (27), coils (30) wound around the insulator and on the stator core, fusing terminals (50) held by the insulator and connected to the coils, and a short-circuiting member (32) having first, second and third sheet-metal members (68A-68C) that are respectively connectable to the fusing terminals by virtue of the short-circuiting member being detachably attached to the insulator by screws (75, 76).

Abstract: The disclosure relates to an actuator module at least consisting of an electrical machine and an application module. The electrical machine consists of a stator and a rotor, the rotor is slidably mounted directly on the stator, and the stator and the rotor are surrounded with plastic at least in the region of the inner bearing face. The plastic coating of the cylindrical rotor outer face has structures which extend as a spiral continuously over the height of the rotor.

Abstract: A brushless motor includes a stator assembly including a generally-cylindrical stator body having a center bore, teeth extending from the stator body towards the center bore and defining slots in between, and windings wound around the teeth; and a rotor assembly rotatably received within the center bore and includes a rotor shaft and a generally-cylindrical rotor body. The motor further includes at least one rotor bearing mounted on the rotor shaft, and at least one bearing support member supporting the rotor bearing. The bearing support member includes a radial body forming a bearing pocket for receiving the rotor bearing therein, and axial post inserts received within the slots of the stator assembly between adjacent sets of windings and in contact with an inner curved surface of the stator body to support the rotor bearing with respect to the stator assembly along a center axis of the center bore.

Abstract: A brushless motor includes a stator assembly including a generally-cylindrical stator body having a center bore, teeth extending from the stator body towards the center bore and defining slots in between, and windings wound around the teeth; and a rotor assembly rotatably received within the center bore and includes a rotor shaft and a generally-cylindrical rotor body. The motor further includes at least one rotor bearing mounted on the rotor shaft, and at least one bearing support member supporting the rotor bearing. The bearing support member includes a radial body forming a bearing pocket for receiving the rotor bearing therein, and axial post inserts received within the slots of the stator assembly between adjacent sets of windings and in contact with an inner curved surface of the stator body to support the rotor bearing with respect to the stator assembly along a center axis of the center bore.

Abstract: A power tool is provided including a tool housing including a motor housing and a handle portion; a battery receptacle disposed at an end of the handle portion opposite the motor housing, the battery receptacle being configured to receive a battery pack having a maximum voltage of at least 60 V; and a brushless DC (BLDC) motor including an electronically-commutated stator assembly and a rotor assembly magnetically interacting with the rotor assembly to rotate with respect to the stator assembly, the stator assembly comprising a stator lamination stack sized to be received within the motor housing having a circumference of approximately 140 to approximately 190 mm. The motor produces a maximum power output of at least 1600 watts for driving an output shaft at a maximum torque of at least 30 inch-pounds and a maximum speed of at least 8000 rotations-per-minute.

Abstract: An angle grinder includes a housing, an output shaft, and a motor. The motor includes a stator assembly, a rotor assembly including a motor shaft configured to rotate about a first axis, a commutator, and a carbon brush. The commutator includes a bushing, configured to connect the commutator to the motor shaft, a plurality of commutator segments, sequentially distributed in a circumferential direction around the first axis and arranged around the bushing, and an insulating member, configured to bond the bushing and the plurality of commutator segments so as to constitute a whole.

Abstract: A cutting machine reduces cost increase associated with production equipment and has design flexibility for different types of batteries. A cutting machine for cutting a workpiece includes a cutting machine body including a cutting blade, a motor that drives the cutting blade, and a motor housing accommodating the motor, and an adapter including a body holder attached to the cutting machine body and a battery holder in which a battery to power the motor is installable.

Abstract: A hand-crank operated food processor includes a container with a removeable lid. The lid incorporates a number of gears that are operable by the hand crank to cause a drive shaft to spin, imparting a rotational force to a food processing implement such as a blade or a paddle carried on the drive shaft. The crank can be inserted into any one of a plurality of attachment points such that rotation of the crank handle in a selected attachment point will rotate the gears, and therefore the drive shaft, at a different rotational speed as compared to the rotational speed achieved at a different one of the plurality of attachment points at the same input speed from the crank.

Abstract: A power tool includes a housing, a motor positioned substantially within the housing, a drive mechanism supported by the housing and coupled to the motor, a battery pack electrically coupled to the motor, and an isolation system. The isolation system includes an interface member positioned substantially within the housing. The interface member receives a portion of the battery pack to electrically couple the battery pack to the motor. The isolation system also includes a plurality of isolators coupled between the housing and the interface member to isolate the battery pack from the housing during operation of the power tool.

Abstract: A device for accommodating at least one battery on a power tool, in particular a circular saw, including a receiving plate for detachably holding the at least one battery, including at least one contact device for connecting the battery to the power tool, and a double hinge device having a first and a second rotation axis, the first rotation axis being positioned on a housing of the power tool, and the second rotation axis being positioned on the receiving plate, so that the receiving plate is reversibly pivotable around the first and the second rotation axis relative to the housing between a first and a second position.

Abstract: Provided is an electric work machine that can suppress a temperature increase of a component controlling an electric motor. The electric work machine including a brushless motor that operates a tip tool includes a rectification circuit that converts a voltage to be applied to the brushless motor from an alternating current voltage to a direct current voltage, and a switching circuit that controls the brushless motor, and the rectification circuit is arranged upstream of the switching circuit in a circulation path of the air that cools the rectification circuit and the switching circuit.

Abstract: Several means 71, 72, 73, 74, and 75 are provided for restricting a relative displacement in a separating direction of half-split housings 50L, 50R. At one or more of several screw-connection parts 60 of the left and right half-split housings 50L, 50R, a press-fitting protrusion 71a is provided in an insertion hole 62a of a boss-receiving part 62 into which a screw-boss part 61 is inserted. By press-fitting the screw-boss part 61 to the boss-receiving part 62, a separation resistance may be introduced between the left and right half-split housings 50L, 50R.

Abstract: The hand machine tool according to the invention has an integrated tool or a tool holder 2 to receive a tool 4. An electric motor 5 serves to drive the tool 4 or the tool holder 2. A battery pack 18 for supplying power to the electric motor 5 can be pushed into a guide 23 in a first direction. A plurality of electrical contacts 31 for contacting counter contacts 32 of the battery pack 18 are disposed in a contact holder 36. Wires 40, which are connected in each case to one of the electrical contacts 31, have cores which extend in a wave-like manner in the first direction 28 adjacent to the electrical counter contact 32.

Abstract: A power tool includes a motor, a switch, a housing, a switching member and a holding member. The housing is a hollow body formed by a first housing part and a second housing part connected with the first housing part. The first housing part has a through hole. The switching member is connected to the switch and includes an operation part exposed outside through the through hole so as to be movable in a specified direction in response to a user's manual operation. The switching member is configured to turn the switch on and off by linearly moving in the specified direction. The holding member is supported by at least one of the first housing part and the second housing part within the housing and configured to hold the switching member between the holding member and the first housing part so as to be linearly movable in the specified direction.

Abstract: An illustrative embodiment of the present disclosure provides hand-held power tool which includes a housing, a motor, and an output spindle. The housing supports a motor having a rotor configured to rotate when the motor is supplied with power. The output spindle protrudes from an output end of the housing, and is functionally coupled to the rotor such that the output spindle rotates in response to a rotation of the rotor. The housing also supports at least one electrical accessory that is connectable to an external power connector located on the housing.

Abstract: A power tool including a housing, a controller within the housing, and a brushless motor within the housing and controlled by the controller. The brushless motor includes a stator assembly, a rotor core, and a rotor enclosure. The stator assembly includes a stator core having stator laminations defining a stack length in an axial direction. The rotor enclosure includes a front end cap provided on a first side of the rotor core having a front bearing holder; and a rear end cap provided on a second side of the rotor core. The brushless motor further includes a fan, a front bearing, and a rear bearing. The front bearing holder and the fan define a bearing-to-fan length in the axial direction between axial ends of the front bearing holder and the fan, wherein a difference between the bearing-to-fan length and the stack length is less than 23.5 millimeters.

Abstract: An electronic module is provided for a power tool having an electric motor. The electronic module includes a printed circuit board (PCB) being substantially disc-shaped; power switches mounted on the PCB forming an inverter bridge circuit for driving the electric motor; a controller mounted on the PCB and configured to control a switching operation of the power switches; positional sensors mounted on the PCB substantially equidistantly from a center of the PCB within the control portion and in communication with the controller to provide positional signals related to a rotational position of the electric motor to the controller; and a module housing arranged to receive the PCB therein. The module housing includes a planar portion in parallel to the PCB and openings disposed in the planar portion angularly around a center of the module housing to receive the positional sensors therein.

Abstract: In order to provide an impact work machine capable of preventing oil leakage and cooling a power transmission apparatus, an impact work machine transmitting power of an electric motor 16 including an output shaft extending in an axis A1 direction to an anvil includes: a housing including a motor case accommodating the electric motor, and a grip extending from the motor case; a speed reducer and an impact mechanism 96 each transmitting power of the electric motor to the anvil; a hammer case located forward of the motor case and nonrotatable relative to the motor case; an extension portion provided on the housing and extending from the motor case toward the hammer case so as to cover at least part of the hammer case; and a passage provided between the hammer case and the extension portion and through which air passes.

Abstract: A vehicle transaxle includes a housing, an electric machine stator, a plurality of mounting plates, and a first set of fasteners. The housing has internal walls that define a cavity and an access opening to the cavity. The electric machine stator is disposed within the cavity between a first of the internal walls and the opening. The plurality of mounting plates secures a first longitudinal end of the stator to the housing proximate the opening. Each fastener of the first set of fasteners extends through one of the mounting plates, through the stator, and engages the first of the internal walls to secure a second longitudinal end of the stator to the first of the internal walls.

Abstract: A vehicle transmission includes a housing, an electric machine, a bracket, and a plurality of fasteners. The housing has internal rear and internal side walls that define a cavity. The electric machine stator and the bracket are disposed within the cavity. The bracket has a metallic inner ring and an elastomer outer ring. The elastomer outer ring engages the internal side wall. The electric machine stator is disposed between the bracket and the internal rear wall. The plurality of fasteners extends through the metallic inner ring, through the stator, and engages the rear internal wall to secure the stator to the housing.

Abstract: Provided is a cleaning device for personal cleaning and care, comprising a cleaning device housing detachably connected to a handle housing, a bracket for supporting the cleaning device, a cleaning element carrier and cleaning elements distributed on the cleaning element carrier, a passive assembly, and a cleaning device transducer.

Abstract: A temperature sensor 1 according to the present invention includes a first coil element 11 and a second coil element 12 both serving as a part of a coil of an electric apparatus, an element main body 53 that includes a thermosensitive body 54 detecting temperature of the first coil element 11 and temperature of the second coil element 12 and a pair of extraction wires 56 and 56 connected to the thermosensitive body 54, and a housing 25 that includes an electric insulating resin material and is configured to house and hold the first coil element 11, the second coil element 12, and the element main body 53.

Abstract: An angle grinder includes a housing formed with a handle, a clamping device for mounting a grinding disk, an output shaft for driving the clamping device to rotate, a brushless motor being provided with a motor shaft, a transmission mechanism for transmitting power between the motor shaft and the output shaft, and a circuit board assembly for providing electricity to the brushless motor. The clamping device is disposed outside of the housing and connected with the output shaft. The output shaft is at least partially disposed inside of the housing and connected with the transmission mechanism. The brushless motor is arranged between the transmission mechanism and the circuit board assembly in a direction substantially parallel to the motor shaft, and the motor shaft is disposed along a direction substantially perpendicular to the output shaft.

Abstract: An electric power tool from starting unintentionally by the user, stopping a locked-on state in an unintentional situation by the user, as well as enhances the theft suppressing effect of the electric power tool. The present invention relates to a starting system including an electric power tool and a glove as a wearable device a user puts on. Only when a use permission signal is received from the glove the user puts on, the operational state of the electric power tool changes to a start standby state whereby electrical functions of the tool can then be utilized, and only in the start standby state, the electric power tool is configured to start by an on-operation thereof.

Abstract: An interference suppression system, a drive having such a suppression system, and a handheld power tool having such a drive, the interference suppression system including a core, the core having exactly one first through-opening, one second through-opening, and one third through-opening, a first segment of a first connecting line of the drive being situated in the first through-opening, a second segment of a second connecting line of the drive being situated in the second through-opening, and a third segment of a third connecting line of the drive being situated in the third through-opening.

Abstract: A power tool includes: a motor; a fan driven by the motor and defining an axis and a radial direction; and a housing for accommodating the motor and the fan therein, the housing including: a peripheral wall formed with a ventilation hole; and a grid partly covering the ventilation hole, the ventilation hole being positioned adjacent to the fan and having a shape defined by a circumferential surface, the grid including at least one elongated portion extending in a longitudinal direction perpendicular to the radial direction, and a distance from the axis of the fan to the circumferential surface is different from a distance from the axis of the fan to one elongated portion in the radial direction of the fan.

Abstract: A sonic pool brush including a head assembly with a base having a plurality of electric motors/circuits mounted on an upper surface and a plurality of brush segments positioned in a row along the lower surface of the base. The brush segments connected one each to the electric motors/circuits, for oscillating motion of each individual brush segment when the plurality of electric motors/circuits are energized, each individual brush segment oscillating at a rate in the sonic range. A housing constructed to fit over the motors and engage the base in a waterproof arrangement and a source of electric power attachable to the plurality of electric motors/circuits for energizing the plurality of electric motors/circuits.

Abstract: A power tool having a light source is provided. The power tool includes a light emitting diode and a thermally conductive housing that houses a movable component of the power tool, the thermally conductive housing including an integral portion that extends from the thermally conductive housing and is configured for thermally coupling with the light emitting diode. The integral portion of the thermally conductive housing is a heat sink for the heat generated by the light emitting diode, when the light emitting diode is thermally coupled to the integral portion of the thermally conductive housing.

Abstract: The present invention relates to a fan motor support for HVAC systems of motor vehicles, comprising a two-part housing (15) having a second part (20) and a first part (20?), a flexible joint (30) connecting the first and second parts (20?, 20), a plurality of internal ribs (40) arranged inside the first and second parts (20?, 20) of the two-part housing (15), locking the motor radially, and at least one pair of projections (50) arranged inside the first and second parts (20?, 20) of the two-part housing (15), locking the motor axially.

Abstract: A hand-held power tool includes a housing with a handle, a transmission, a drive motor, a tool receiver, and a first switch unit. The transmission and drive motor are arranged in the housing, the transmission being configured to transmit a torque generated by the drive motor to the tool receiver, which is configured to rotate about a rotation axis. The first switch unit is configured to control the drive motor, and has a first switching element and a second switching element that are configured to operate the first switch unit and that enable an operator to influence various control variables of the drive motor. The second switching element is further configured to control a direction of the rotation of the drive motor, and upon actuation, execute a linear movement that is substantially parallel to the rotation axis.

Abstract: A surgical instrument for applying a rotational force to a structural element during a surgical procedure. The instrument may be designed for increasing an input force to produce an enlarged output force adequate for fracturing an excess section of the elongated element from a remainder of the structural element. The instrument may include an input mechanism that receives an external rotational input force, a planetary gear system that multiples the input force, and an output mechanism that attaches to and delivers the multiplied rotational output force to the excess section of the structural element. The output mechanism may also be configured to capture the separated excess section. The instrument may include a housing and a handle for grasping and manipulating during the surgical procedure.

Abstract: A power tool (1) includes a brushless motor (8) having a stator (9) and a rotor (10). The stator (9) includes: a tubular stator core (60); front and rear insulators (61, 62) fixed to the stator core; and coils (64), which are wound around a plurality of teeth (63) on the stator core. The rotor (10) includes: a rotor core (67) disposed within the stator; a rotary shaft (11) fixed to the rotor core; and one or more permanent magnets (68) fixed to the rotor core. A sensor-circuit board (65) detects the position(s) of the permanent magnet(s) and is fixed to the stator. One or more notched parts (91) is/are formed, in an outer circumference of the sensor-circuit board, between circumferentially-adjacent teeth in an axial direction of the stator. The notch part(s) allow(s) air for cooling the brushless motor to pass more easily through the interior of the stator.

Abstract: Methods, apparatus, systems and articles of manufacture to implement cooling fans with selectively activated vibration modes are disclosed. An example cooling fan assembly includes a motor and a fan coupled to a shaft of the motor. The motor is to rotate the shaft in a first direction to cause the fan to move air. The motor is to rotate the shaft in a second direction to cause vibration from an eccentric mass coupled to the shaft.

Abstract: In an electric power tool which houses a motor and a controller for controlling drive of the motor, the controller has a circuit board on which electric components are mounted and a heat radiation member which radiates heat of the electric components. The heat radiation member has a facing part which faces the circuit board in parallel to a board surface of the circuit board. The facing part is provided with steps by which a distance between the facing part and the board surface of the circuit board varies. Furthermore, the facing part of the heat radiation member is provided with a first facing part in which a relative distance with respect to the board surface of the circuit board is reduced.

Abstract: A secondary drive unit (10) for demountable attachment to a machine having a primary drive unit and power take-off, the secondary drive unit (10) comprises a housing (12), a drivable input element (16) drivable by the machine at one end of the housing (12), a driven output element (18) at the other end of the housing (12) for driving a tool and/or another machine, and at least one rotatable gear carrier (44) in the housing (12) drivable by the drivable input element (16). An interior surface of the housing (12) includes a radially-inwardly projecting gear-carrier stop (58) overlapping the gear carrier (44). A low-friction rubbing element (62) is interposed between the gear-carrier stop (58) and the gear carrier (44) to prevent or limit gear-carrier lift. This prevents or limits undue lateral strain along a central rotational axis of the drive unit (10), and thus a possibility of internal shearing.

Abstract: The invention provides a stator for an electric motor comprising a plurality of teeth separated by slots, and comprising conductive material provided in the slots between two or more of the teeth.

Abstract: A vehicle seat comprises a seat bottom having a bottom cushion and a seat back coupled to the seat bottom with the seat back having a back cushion. At least one of the bottom cushion and the back cushion defines a passage. The vehicle seat further comprises a blower assembly coupled to one of the seat bottom and the seat back. The blower assembly comprises a housing and a stator, which is coupled to the housing and comprises a plurality of driving coils. The blower assembly further comprises a rotor rotatably coupled to the housing about a rotational axis, with the rotor comprising a plurality of permanent magnets arranged to generate a flux concentrated on the driving coils. The blower assembly further comprises an impeller coupled to the rotor to rotate about the rotational axis to generate a flow of air through the passage.

Abstract: A power tool is provided including a housing; and an electric brushless DC (BLDG) motor housed inside the housing. The motor includes a motor housing having a substantially cylindrical body and a back plate, the cylindrical body of the motor housing defining a slot at or proximate the back plate; a stator housed within the motor housing; a rotor pivotably arranged inside the stator, the rotor including a rotor shaft, a rotor core rotatably mounted on the rotor shaft and housing rotor magnets therein, and a sense magnet ring affixed to the rotor shaft and having magnets aligned with the rotor magnets; and a positional sensor board having positional sensors mounted thereon, the positional sensor board being received through the slot of the motor housing to dispose the positional sensors in close proximity to the sense magnet ring.

Abstract: The invention provides a unitary cordless dental drive apparatus with a cantilever arm extending outward and positioned to allow a dental nose cone to be connected. An activating switch is located at the free end of the cantilever arm in a position that is convenient for manipulation by a user. In a second embodiment, the switch is in the form of a contactor mounted below the cantilever arm to contact the nose cone when pressed. In a third embodiment, a foot pedal connected to a wireless transmitter is provided to send a signal to a receiver located within the handpiece for activating the handpiece.