Abstract: There is provided a mobile member position detection apparatus in which not only high-accuracy detection of a window glass or the like of a power window apparatus but also setting of an initial position being free from cumbersome adjustment can be realized with a simple structure at low cost. In a position detection apparatus, a ring gear is rotated together with a motor output shaft, and a predetermined rotational position is detected by a mobile contact and a fixed contact. In this case, since a projecting portion of a gear base is brought into contact with a contact surface of a base plate to hold the gear base, a difference between loss torque of the gear base and loss torque of the ring gear increases, and a planetary gear is not unnecessarily revolved. Thereafter, when the output shaft is rotated, holding of the carrier by a wave washer is released, and rotation of the output shaft is not transmitted to the ring gear.

Abstract: A ball ramp mechanism having a control ring acting with an actuation ring to apply a clamping force on a driveline clutch during both a vehicle driving mode and a vehicle coast mode using a planetary gearset acting with a one-way clutch between a sun gear and meshing planetary gears to define rotation of the control ring with respect to the actuation ring in a direction tending to further activate the ball ramp mechanism. In the vehicle drive mode the planetary gearset is locked by the one-way clutch and in a vehicle coast mode the one-way clutch releases and the planetary gearset rotates the control ring through a coil pole in a direction to further activate the ball ramp mechanism.

Abstract: A motor-driven hub for a bicycle includes a hub shaft, a hub body rotatably mounted about the hub shaft, a drive member coaxially mounted with the hub shaft, a motor coupled to the drive member for rotating the drive member, and a one-way clutch disposed in a transmission path between the drive member and the hub body for transmitting rotation of the drive member to the hub body only in one direction. A gear reduction mechanism in the form of a planetary gear unit may be mounted in the transmission path between the drive member and the hub body so that the hub body rotates slower than the drive member. The motor may be mounted outside the hub or inside the hub. When mounted inside the hub, the motor may be mounted coaxially about the hub shaft so that the center of gravity of the motor lies within the hub along the axis of the hub.

Abstract: A control system for a multiple ratio transmission including two overrunning couplings acting in cooperation with friction clutches and brakes to effect controlled shifts between ratios to reduce inertia torque upon engagement of friction brakes associated with speed ratio downshifts that occur in time-controlled stages following a command for a downshift and for establishing an electronic pressure accumulator effect upon speed ratio upshifts following a command for an upshift.

Abstract: The cooling for large track laying type vehicles is provided by a fan which circulates air through the powertrain compartment and a radiator. The fan speed is varied to reduce the power requirement when maximum air flow is not needed. The speed of the fan is modulated relative to the engine speed by a separate drive mechanism. The electrical generator speed can also be modulated simultaneously with the fan drive. To provide a compact arrangement, the fan input shaft and generator input shaft are coaxially disposed such that the fan structure surrounds the outer periphery of the generator.

Abstract: An electro-mechanical transmission has interconnected simple planetary gear sets having one member connected to each of a pair of motor/generators and another member connectible with an engine through a selectively operable torque transmitting device. Three additional selectively operable torque transmitting devices cooperate with the gear sets, engine and/or the motor/generators to provide three modes of electro-mechanical power transmissions. One of the motor/generators is stationary, at one speed point in each of two modes, thereby providing two high efficiency operating points.

Abstract: A motor apparatus with reduction gear in which a motor portion is disposed around the center shaft and a reduction gear portion is disposed at the outer circumference thereof so that the thickness in the direction of the axis of rotation is reduced. The motor portion of the motor apparatus is composed of a stator coil disposed around the center shaft, a rotational body rotatably supported by the center shaft, and a magnet attached to the rotational body in a manner opposite to the stator coil.

Abstract: The object of the present invention is to provide a drive unit including a movable gear section having a first pinion gear and a second pinion gear, which are coaxially integrated. A driving mechanism is provided for spinably moving the movable gear section in a circular orbit. A fixed ring gear is coaxial arranged relative to the circular orbit, the fixed ring gear having a first gear section, formed on a circumferential face, wherein the first pinion gear is engaged with the first gear section, and wherein the movable gear section is spun when the movable gear section is moved in the circular orbit. An output ring gear is coaxial positioned relative to the fixed ring gear and is capable of rotating with respect thereto. The output ring gear includes a second gear section, formed on a circumferential face, wherein the second pinion gear is engaged with the second gear section, and wherein the output ring gear is rotated when the movable gear section is spun.

Abstract: The present invention relates to a motor vehicle planetary transmission component for the individual drive of a wheel of a motor vehicle. The planetary transmission component comprises a rotary component of a motor which is mounted with its motor shaft by means of a roller bearing on a support part, which support part simultaneously forms a housing for a planetary transmission. The motor shaft supports, equiaxially with respect to its axis of rotation, a sun wheel which is surrounded by a ring gear held on the support part. Engaged with the sun wheel and the ring gear are planet wheels which are supported axially parallel to the axis of rotation of the motor shaft on a driven shaft part of the planetary transmission. The driven shaft part is supported by means of a single, single-row roller bearing on the support part. This roller bearing is located on the side of the plane of rotation of the planet wheels axially farther from the roller bearing of the motor shaft, and has some radial play.

Abstract: A controller for a planetary differential type reduction gear device (1), in which a driving force of a motor (10) is controlled by controller and the speed is reduced by the planetary differential type reduction gear device (1) so that the reduced speed is transmitted to an output side and a predetermined work is carried out by the driving force on the output sides and in which an output rotation detector (14) is provided on the output side of the planetary differential type reduction gear device (1) so that the driving force of the motor (10) is controlled on the basis of information from the output rotation detector (14) to thereby carry out the predetermined work. The detection is made in the vicinity of the object to be controlled to thereby improve the control accuracy as well as the structure.

Abstract: An actuator comprises a housing member including a motor compartment and a gear compartment, the gear compartment having inner teeth formed on the inner periphery thereof, a motor having a rotary shaft with a motor gear mounted thereon, the motor being housed in the motor compartment in such a way as to permit the motor gear to project into the gear compartment, an output shaft projecting outwardly from the housing member, a larger diameter gear housed in the gear compartment which is rotatable about the output shaft and held in mesh engagement with the motor gear, a smaller diameter gear disposed coaxially with the larger diameter gear and rotatable in conjunction with the rotation of the larger diameter gear, a planet gear held in mesh engagement with both the smaller diameter gear and the inner teeth formed in the gear compartment so that the planet gear can shift its engagement position with respect to the inner teeth as the smaller diameter gear rotates, and a rotary member engaging the planet gear for r

Abstract: An actuator for steering rear wheels is reduced in size and its construction is simplified while preventing a degradation in the reliability. An electric coil 2 is disposed on the outside while a rotor is disposed on the inside, assisting in heating dissipation. One of bearings 10 which support a rotor and an electric coil 2 are integrally secured to a casing 1 when a resin 3 is molded thereon. At the same time, a ring gear 12 is formed by the molding of the resin 3. In addition, the molding operation of the resin forms one of sun gears, 11a, integrally with a rotor 4. The casing 1 is formed with a recess or projection 1a, 1b, thus preventing a slip of the resin member 3 from occurring. A permanent magnet 13 which is separate from a permanent magnet 5 used for driving is mounted on the rotor.

Abstract: A torque/force transfer apparatus which includes an annular ring having tein permanent first magnets side by side about the interior of the ring. The first magnets are arranged so as to alternate in polar orientation to present an inside circumference of alternating north and south magnetic poles. A cylindrical central member has therein permanent second magnets side by side about the exterior of the central member. The second magnets are arranged so as to alternate in polar orientation to present an outside circumference of alternating north and south magnetic poles. A strut assembly is pivotally attached to a center of a side of the central member and has arms extending radially outwardly from the central member center and is provided with planetary members rotatably connected each to one of the arms.

Abstract: A power transmission system in a hybrid vehicle uses the power developed by an electric motor for directly rotating driving wheels, without power loss in a torque convertor connected to an engine. When the vehicle travels by the power of the engine, an input clutch 7 is engaged so that rotation of an engine output shaft 1a is transmitted to a two-gear shift device 9 via the torque convertor 6, the input clutch 7, and an intermediate shaft 21, whereby driving wheels 33a and 33b are driven by a differential unit 11. While powered by the electric motor, the input clutch 7 is released and the rotation of the electric motor 27 is preferably changed in the shift device 9 before being transmitted to the driving wheels 33a and 33b.

Abstract: A rotary actuator for opening and closing a valve, damper or linkage for industrial application, the actuator including a housing having a motor mounted thereon for driving a speed reduction gear train to reduce the speed of the motor, the rotary motion of the output shaft of the speed reduction gearing to linear motion against the force of a biasing spring to convert the linear motion of the converting motion to rotary motion of the output shaft.

Abstract: A vehicle transmission system is described which employs a split power path design to achieve continuously variable speed ratios. A motor-generator unit is provided for converting a fraction of the input power into electrical power, and a second motor-generator and differential gear mechanism are employed to re-combine the two power components before transmitting the mechanical power through a gearbox. Electrical power dissipation means allows the transmission system to provide slippage when accelerating a load from rest, and it also assists in shifting and in braking. An electronic motor controller coordinates feedback signals from various sensors and controls the dynamic performance of the entire system. The motor-generators are integrated with the housing of the transmission and have water jackets to assist in heat dissipation. The motor-generator pair and the power dissipation elements are all cooled by a circulating fluid which transfers heat from these components to an external heat exchanger.

Abstract: A gearbox comprises a row of parallely mounted disks. The mutually facing diametral planes of the disks are carrying cylindrical rings mounted coaxially to the rotation axes of the disks and provided with engaging elements on their internal and external cylindrical surfaces. Due to an offset between the neighboring disks providing for eccentricity between their parallel rotation axes all the rings located in the space between the diametral planes of the neighboring disks are in permanent engagement. Each ring is freely rotatable and is provided with means for its controlled interlocking with the disk carrying it.

Abstract: An elevation mechanism, for changing the elevation angle of an attachable container subassembly, has an outer housing having an integral portion for mounting the container subassembly, and an inner housing having an exterior surface about which the outer housing is rotatably supported. A motor within the inner housing supplies torque to a gear train, which includes a planetary gear system for rotating the outer housing and the container subassembly attachable thereto, with respect to the inner housing. The inner housing can be fastened to a surface, generally in the vertical plane, with respect to which surface the rotating outer housing moves the container subassembly in adjustable elevation disposition.

Abstract: A plurality of flexible cylindrical members, termed flex-gears and having gear tooth type perimeters are located in an annular space between two concentric rotating gear members, one an inner gear member and the other an outer ring gear member, both of which have mutually facing toothed surfaces which engage the flex-gears. The flex-gears rotate and orbit around the annular space as planetary gears when the inner and outer gear members rotate with respect to one another. Pairs of these elements located in two mutually parallel planes and separated by insulators provide two electrical conductor paths across which an electrical signal source, AC or DC, can be connected and coupled to an electrical device. Alternatively, one set of elements including outer gears segmented into mutually insulated semicircles and inner gears segmented into mutually insulated quadrants can be used.

Abstract: An actuator module for inducing the relative motion of robot members joined in a robot joint includes a Ferguson epicyclic gear train, integral motor and integrated control means. The gear train comprises a plurality of base gears connected to the robot members and a plurality of planet gear carriers, each planet gear carrier having a plurality of planet gears rotatably mounted therein. A motor integrated with certain gear train components induces the rotation of the planet gear carriers about or within the base gears. Because of the Ferguson paradox, this induces the motion of base gears connected to one robot member relative to those connected to the other robot member, which in turn causes the relative motion of the robot members. The actuator module can be configured as dual substantially symmetric systems and may comprise multiple stages of epicyclic gearing.

Abstract: A transfer case for a vehicle having a pair of front wheels and a pair of rear wheels and capable of all-wheel or two wheel drive has an input shaft connected to a carrier of a planetary gear differential having a ring gear connected to a first output shaft for driving a first pair of wheels and a sun gear connected to a second output shaft for driving a second pair of wheels. A clutch is provided on the planetary gear differential for selectively locking the first and second output shafts together for concurrent rotation when the planetary gear differential clutch is engaged, thereby providing all-wheel drive. A brake is provided for selectively preventing the second output shaft from rotating so that when the second output shaft brake is applied and the planetary gear differential clutch is disengaged, the first output shaft will rotate at an overdrive gear ratio relative to the rotational speed of the input shaft, thereby providing two-wheel drive at an overdrive gear ratio.

Abstract: An electric engine starter that has a motor frame and a planetary gear mechanism is provided with an internal shield that is operative to prevent brush dust from entering the planetary gear mechanism. The shield is formed of steel and has an outer annular flange that, prior to assembly to the starter, is located at an angle to a plane that is normal to the longitudinal axis of the shield. When the shield is assembled to the starter, it is compressed between the motor frame and a support for the ring gear of the planetary gear mechanism. During this compression, the flange is deflected to develop a spring force. This spring force causes a gasket interposed between the flange and the motor frame to tightly seal against the motor frame. This spring force further causes the shield to tightly engage the ring gear support.

Abstract: A power tool with a two-part housing has a drive motor with a pinion gear on the motor shaft. A plastic cylindrical ring gear is fixed to the motor in coaxial surrounding relationship with the pinion gear and has attachment lugs which fit between the two parts of the tool housing and are fixedly secured to each. A plastic gear carrier frame is insert molded on a splined end of a metal output shaft and is receivable within the ring gear and has radial slots for respectively receiving pins which respectively rotatably mount three planet gears in meshing engagement with the pinion gear and the ring gear. The carrier frame has a hollow stub shaft portion which receives the pinion gear therethrough, the stub shaft portion having an elastomeric O-ring seated in a circumferential groove therein for press-fitting a ball bearing thereon, the ball bearing being in turn press-fitted in a seat in the ring gear to support the planet gear assembly.

Abstract: A differential gear device for a vehicle is disclosed. The differential gear device is provided with a planetary gearing for producing differential motion having a ring gear with a toothed portion, and an electro-magnetic multiple clutch for limiting the differential motion. The electro-magnetic clutch is provided with a plurality of outer friction plates and a plurality of inner friction plates alternately positioned with the outer friction plates. An outer rotary member made of a nonmagnetic substance and integrally joined to the ring gear is provided for the electro-magnetic multiple clutch. A support member is made of a magnetic substance and conducts a magnetic force from the electro-magnet to the armature through the outer and inner friction plates to attract the armature to engage the outer and inner friction plates in cooperation with the armature. The support member is connected with the outer rotary member.

Abstract: A wheel motor is provided with a stator which includes a coil wound therearound and which is fixed to a casing, a hollow cylindrical rotor which is supported by the casing through a bearing and is disposed inside the stator, an output flange which is supported by the casing through a bearing and which is fixed to a wheel, a reduction mechanism which includes an input gear supported by the rotor and an output gear supported by the output flange and which is disposed in the hollow in the rotor, an oil pump motor disposed in a lower portion of the casing, an oil passage extending upward through a side wall of the casing, and an oil passage which is formed in an upper portion of the casing and which feeds a discharge port through which oil is ejected for cooling the stator coil. The lubricating system for the wheel motor includes a lubricating oil passage extending from the oil passage in the upper portion of the casing to the reduction mechanism for supplying the cooled oil to the reduction mechanism.

Abstract: A power steering apparatus provided with an electromagnetic clutch disposed between an output shaft of a steering assisting motor and a transmission shaft connected to a steering mechanism, an intermediate transmission shaft supported between the output shaft and transmission shaft and supporting an armature part of the electromagnetic clutch, and a biasing member to bias the intermediate transmission shaft in the axial direction. The intermediate transmission shaft is pressed to the side of the output shaft by the biasing member and a fixed initial gap is formed between a friction plate fixed to the output shaft and another friction plate fixed to the armature part. In addition, this power steering apparatus is provided with a shielding member between a reduction unit and the electromagnetic clutch for shielding these two from each other. Lubricant scattering from the reduction unit is prevented from reaching the electromagnetic clutch owing to the presence of the shielding member.

Abstract: The present disclosure is related to an improved speed variable transmission system adapted for, in particular, electrically operated vehicle. The system is operated by common manual gear shift. The manual gear shift has a power source made up of a specially designed electric motor having a rotatable outer shell relatively moveable with respect to a core rotor so that the power from the rotatable outer shell and the core rotor of the electric motor can be output respectively to a front and a rear differential gear device, and the vehicle can be powered to move via the differential gear devices. The respective transmission shafts between the electric motor and the front and rear differential gear devices can be selectively locked so that the power from the motor can be selectively varied when output to the differential gear devices thereby the wheels of the automobile can be varied in speed.

Abstract: A motor wheel apparatus having an integral reduction planetary gearset is steerable and adapted for use in a conventional independently sprung automotive suspension. The motor, gearset and wheel elements are mounted on a single steerable support member to minimize the tolerance stack up and to enable independent servicing of the motor and gearset elements. The output element of the gearset is supported solely by virtue of the gear meshes and a splined connection to the wheel, thereby permitting the output element to self-align with the wheel and isolating the wheel forces from the motor and gearset elements.

Abstract: In an excavating machine having a ring gear and a rotating frame including a top and bottom plate, an assembly for rotating the frame relative to the ring gear includes a plurality of drive units, each of the drive units is mounted to the bottom plate and is disposed between the top and bottom plates of the rotating frame. Each of the drive units further includes a pinion extending below the bottom plate and adjacent to the ring gear for driving engagement with the ring gear.

Abstract: An electromagnetic speed change apparatus is effective to shift a sleeve from a first speed position to a second against the bias of a spring. In a preferred form, the apparatus includes an armature fixed to a shifting sleeve for rotation and axial movement therewith, one end of the shifting sleeve splined to an output shaft, the opposite end of the shifting sleeve selectively engagable with an internally splined aperture positioned in one end of an input shaft or with an internally splined carrier aperture axially spaced from the input shaft end. The shifting sleeve has a minor diameter portion and a major portion larger than the minor portion. The major portion is piloted by a support member disposed in the end of the input shaft. In a preferred form, a neck bridges the major and minor diameter portions of the sleeve, and provides a limit to axial movement of the shifting sleeve whenever the neck comes into contact with the support member.

Abstract: An antibacklash gear drive system including an internal ring gear (46) engaged with a pinion gear (76) powered by a motor drive assembly (48). The motor drive assembly together with the pinion gear is mounted on an eccentric plate (58) so that the rotational axis (72) of the pinion gear is offset from the central axis (66) of the eccentric plate (58). The eccentric plate is adapted to be rotated about its central axis (66) by an adjustment mechanism (86) whereby the distance between the rotational axis (72) of the pinion gear and the rotational axis of the ring gear is varied to increase or decrease, as desired, the engagement of the teeth of the ring and pinion gears thereby to increase or decrease the backlash between the two gears.

Abstract: An actuating mechanism for controlling the swashplate angle in a Stirling cycle engine or other engine having parallel reciprocating pistons. The actuation system uses an electric motor for changing swashplate angle. Various embodiments for gear trains for communicating rotation of the electric motor rotor to the swashplate are described. In a first embodiment, a planet gear carrier is driven by the motor and the planet gears simultaneously mesh with two ring gears having a differing number of teeth. Rotation of the carrier creates a high reduction drive for the second ring gear. In accordance with a second embodiment, the ring gear carrier is permitted to freely rotate and a driving sun gear is provided which meshes with the planet gears.

Abstract: The electrically operated drum brake (10) comprises an electric motor assembly (80, 180) disposed between opposing ends (62, 72) of two brake shoes (12, 14), the electric motor assembly (80, 180) replacing both the hydraulic wheel cylinder and the parking brake strut and lever. The electric motor assembly (80, 180) comprises a housing (82, 182) having an interior opening (84, 184) in which is disposed an electric motor (86, 186). The electric motor (86) drive a planetary gear assembly (91) which operates a screw mechanism (102) that engages an end (72) of an adjacent brake shoe (14), the housing (82) engaging the other brake shoe (12). An alternative embodiment includes an electric motor (186) which drives a bearing drive member (198), the bearing drive member (198) having a bearing track (200) which receives a plurality of bearing balls (205). The bearing balls (205) engage a fixed bearing track (187) on the housing ( 182) and also a curved surface (202) on a rotatable bearing member (201).

Abstract: A robot arm drive apparatus of an industrial robot comprising: an electric motor having a drive shaft; a first robot member having the electric motor mounted thereon; a second robot member rotatably supported on the first robot member; and reduction gears for reducing rotation of the electric motor and then transmitting to the second robot member; the reduction gears comprising a planetary reduction gear and furthermore an additional reduction gear which is purposely provided so that the number of rotations of the electric motor, at which the resonance of a drive system comprising the electric motor, the second robot member and the reduction gear means occurs, is shifted from a predetermined operational region of the electric motor.

Abstract: An electric motor having a frictional planetary speed reducer comprises a hollow cylindrical rotor disposed inside a stator. The speed reducer is at least partly accommodated in the rotor.

Abstract: A starter includes a speed changing mechanism for transmitting rotational force of an electric motor to a pinion gear capable of being brought into or out of engagement with a ring gear of an engine. The speed changing mechanism includes a geared stepless speed changer. A speed reduction ratio is controlled responsive to a load change by means of an input shaft, an output shaft, and input and output frames rotatable relative to each other about the input shaft. A ratio of angular velocities of the input and output shafts is related to an angle of rotation between the input and output frames.

Abstract: A mechanical torque converting transmission for producing an output with variable, controllable speed and torque characteristics comprises a rotary input shaft adapted for attachment to a rotary power source and connected to a main drive gear. The drive gear is meshed with a plurality of pinion gears which are journaled for rotation on an arm assembly. An eccentric device is driven by each pinion gear for creating a centrifugal force that cyclically urges the arm assembly in alternating forward and backward directions with a pulsating motion during each rotation of each eccentric device. A clutch is provided for allowing forward movement of the arm assembly while preventing movement in the backward direction during each eccentric revolution.

Abstract: In a starter having a planet gear speed reducer in which the front frame is secured to the end face of the motor with penetrating bolts, a cylindrical packing with ears is mounted on an internal gear with the penetrating bolts inserted into the ears so that, when the penetrating bolts are tightened, the ears of the packing are inscribed in the front frame, while sealingly holding the penetrating bolts, and the packing is compressed between the end face of the motor and the flange of the internal gear, thus eliminating the difficulty that water flows down the penetrating bolts into the motor.