Abstract: The family of transmissions has a plurality of members that can be utilized in powertrains to provide at least six forward speed ratios and one reverse speed ratio. The transmission family members include four planetary gear sets, two input clutches, eight or nine torque transmitting mechanisms and two fixed interconnections. The invention provides a low content multi-speed dual-clutch transmission mechanism wherein the two input clutches alternately connect the engine to realize odd and even number speed ratio ranges. The nine torque transmitting mechanisms provide connections between various gear members, the fixed interconnections, the input shaft, the output shaft, and the transmission housing, and are operated in combinations of three to establish at least five forward speed ratios and atleast one reverse speed ratio.

Abstract: A family of power transmissions disposed in powertrains wherein each family member has three planetary gearsets and five selectively engageable torque-transmitting mechanisms. The torque-transmitting mechanisms are engaged in combinations of three to provide a reverse speed ratio and at least six forward speed ratios between an input shaft and an output shaft. The family members are characterized at least in part by interconnected members of the first and second planetary gearsets and continuously interconnected members of the second and third planetary gearsets. Further, the family members are characterized by the output shaft being continuously connected to one planetary gearset member, and the one member of the first planetary gearset being continuously connected with the transmission housing. One other common characteristic of the family members is that the input shaft is selectively connectible through at least two torque-transmitting mechanisms with members of at least two of the planetary gearsets.

Abstract: A family of power transmissions disposed in powertrains wherein each family member has three planetary gearsets and five selectively engageable torque-transmitting mechanisms. The torque-transmitting mechanisms are engaged in combinations of three to provide a reverse speed ratio and at least six forward speed ratios between an input shaft and an output shaft. The family members are characterized at least in part by interconnected members of the first and second planetary gearsets and continuously interconnected members of the second and third planetary gearsets. Further, the family members are characterized by the output shaft being continuously connected to one planetary gearset member, and the one member of the first planetary gearset being continuously connected with the transmission housing. One other common characteristic of the family members is that the input shaft is selectively connectible through at least two torque-transmitting mechanisms with members of at least two of the planetary gearsets.

Abstract: The family of transmissions has a plurality of members that can be utilized in powertrains to provide at least five forward speed ratios and one reverse speed ratio. The transmission family members include three planetary gear sets, one brake, and three clutches. The powertrain includes an engine and torque converter that is continuously connected to at least one member of the planetary gear arrangement and an output member that is continuously connected with another of the planetary gear members. At least one member of the first gear set is continuously connected with the transmission housing. The brake and three clutches provide interconnections between various gear members and with the input and the output shaft, and sometimes with the transmission housing, and are operated in combinations of two to establish at least five forward speed ratios and one reverse speed ratio.

Abstract: An actuator for a vehicle transmission having both a shift-by-wire mode and a manual override mode includes a motor and a gear assembly driven by the motor when the vehicle transmission is in a shift-by-wire mode. An output member of the gear assembly is configured to mate with the vehicle transmission. A release member is operable to drive the gear assembly when the vehicle transmission is in a manual override mode.

Abstract: A multiple plate clutch device is provided to conserve space. In a reverse hydraulic brake device 7, a plurality of teeth 35 is formed next to one another in a circumferential direction in an inner peripheral surface portion 31 of a transmission case 21. A plurality of first brake plates 24 includes engagement teeth 41, 42. The engagement teeth 41, 42 engage the plurality of teeth 35 on the inner peripheral surface portion 31 such that the plurality of first brake plates 24 is axially movable and non-rotatable relative to the inner peripheral surface 31. A plurality of second brake plates 25 is disposed to alternate axially with the plurality of first brake plates 24. A piston 22 pushes the plates 24 and 25. Return springs 28 are disposed within deep grooves 37 that are between the teeth 35 and the inner peripheral surface portion 31. The return springs 28 urge the first plate 29 that is closest the piston 22 towards the piston 22.

Abstract: A two-stage planetary gear drive,-shifting device having an input shaft (1) which is connected with a sun gear (12) and an output shaft (2) which is connected to a planetary gear carrier (15), hollow internal gear (18), of the planetary gear drive, is form-fit, by a slide collar (19), to either a gear drive housing (3) or is coupled to the gear (12). The slide collar (19), is coaxial with the input drive shaft and is slidable into various shift positions by an electrical positioning member (31). It is proposed that the electrical positioning member (31) is an electromagnet, and an armature (33) of the electromagnet is connected, in a driving manner, with the slide collar (19).

Abstract: A three-speed gear shifting box for power-driven tools includes a triple gear fitted on an output shaft of an electric motor, and planetary gears are sleeved respectively on three planetary gear shafts of an intermediate gear disk and are meshed respectively with the triple gear and internal gears. A poking spring makes an internal gear regulating ring move and fix one of the internal gears. Gears on the intermediate gear disk mesh with planetary gears on four planetary gear shafts, on the main shaft, and the planetary gears also mesh with the fixed internal gear.

Abstract: An isolation assembly (26) for transferring torque between an engine (20) and a planetary transmission (30) includes both a radial spring assembly (56) and a viscous fluid damper (58). A damper plate (76) is rotationally coupled to the engine (20) and to the radial spring assembly (56). The damper plate (76) is also coupled to the viscous fluid damper (58). The torque output from the damper (58) and radial spring assembly (56) is then coupled to the input to the transmission (30).

Abstract: The family of transmissions has a plurality of members that can be utilized in powertrains to provide at least five forward speed ratios and one reverse speed ratio. The transmission family members include three planetary gear sets, one brake, and three clutches. The powertrain includes an engine and torque converter that is continuously connected to at least one member of the planetary gear arrangement and an output member that is continuously connected with another of the planetary gear members. At least one member of the first gear set is continuously connected with the transmission housing. The brake and three clutches provide interconnections between various gear members and with the input and the output shaft, and sometimes with the transmission housing, and are operated in combinations of two to establish at least five forward speed ratios and one reverse speed ratio.

Abstract: In order to achieve a repair-friendly and maintenance-friendly arrangement with improved conduction away of heat to the outside in a wheel drive, in particular for mobile machines, having a carrying axle (2) which is mounted fixed in terms of rotation to the vehicle frame (1) and which is rotatably connected as a wheel hub to a ring gear (4) via a roller bearing arrangement (3a, 3b), the ring gear (4) being driven via at least one planetary gear mechanism (24) with drive-end sun wheel (16), and an integrated dynamic service brake (24) being provided between the ring gear (4) and the carrying axle (2), it is proposed that the service brake (24) be arranged within the ring gear (4) at the end directly behind a detachable gear mechanism cover (11) and at the outer radius on a hollow-cylinder-shaped brake carrier (10) which forms the end piece of the carrying axle (2) which is fixed in terms of rotation, and that the planetary gear mechanism (34) be arranged behind the service brake (24), viewed from the end, wit

Abstract: The invention related to a hydrodynamic-mechanical multi-speed compound transmission has at least four speeds. The transmission includes a transmission input shaft and a transmission output shaft as well as a hydrodynamic transmission part. The hydrodynamic and the mechanical transmission parts are connected in series when seen from the power flow direction. Mechanisms are provided for by-passing the hydrodynamic transmission part during power transmission. The hydrodynamic transmission part includes at least one hydrodynamic speed-torque converter. The mechanical transmission part includes a mechanical speed-torque converting device with at least two planetary gear sets. The mechanical transmission part is designed in such a way that transmission ratios in the individual gear steps cause gear step jumps of phi ≦1.45 between two successive gear steps of the individual speeds.

Abstract: A drivetrain for transmitting driving force from an engine to a drive shaft of a vehicle, includes a planetary gear mechanism including first to five rotational elements arrayed on an alignment chart, the first rotational element being connected to an output shaft of the engine and the second rotational element being connected to the drive shaft, a first motor-generator connected to the third rotational element, and a second motor-generator connected to the fourth rotational element.

Abstract: A family of power transmissions, which are utilized in a powertrain, include three planetary gearsets and five torque-transmitting mechanisms. The torque-transmitting mechanisms are either five rotating type torque-transmitting mechanisms or four rotating type torque-transmitting mechanisms and one stationary type torque-transmitting mechanism. Each of the three planetary gearsets all include three members represented by a sun gear member, a ring gear member, and planet carrier assembly member. The planet carrier assembly member may be of either the single pinion or double pinion. In each of the family members, at least four of the planetary members are interconnected continuously with either another planetary member, the input shaft, the output shaft, or a stationary housing of the transmission. At least four of the planetary members are noncontinuously interconnected with another planetary member, the input shaft, the output shaft, or the stationary housing.

Abstract: Electrically variable transmissions embodying the concepts the present invention utilize two planetary gear subsets, two motor/generators and two clutches in the nature of torque transfer devices to effect input split, compound split, neutral and reverse modes of operation. Both planetary gear subsets may be simple, or one may be individually compounded. An electrical control member regulates power flow among an energy storage device and the two motor/generators. In either of two preferred embodiments the neutral mode of operation may be effected by releasing the two torque transfer devices, and the reverse mode of operation may be effected by reversing the magnetic polarity of one motor/generator. In addition, the two preferred embodiments allow a geared neutral as well as reverse to be effected by means of the differential gearing arrangement of the planetary gear subsets and other members of the transmission.

Abstract: A family of transmissions has three planetary gear sets controlled by five torque transmitting mechanisms that are selectively operable to provide six forward speed ratios and a reverse ratio between an input shaft and a output shaft. The planetary gear sets may be of the single or double pinion gear type and each include three members such as a sun gear member, a ring gear member and a planet carrier assembly member. First and second members of the first planetary gear set are continuously connected with respective first and second members of the second planetary gear set. A first member of the third planetary gear set is continuously connected to a stationary component. The input shaft is continuously connected to at least one member of one of the planetary gear sets and the output shaft is connected to at least one member of one of the planetary gear sets.

Abstract: A three-speed gear shifting box for power-driven tools, characterized in that on a triple gear is fitted on output shaft of electric motor, and planetary gears are sleeved respectively on three planetary gear shafts of an intermediate gear disk and are meshed respectively with the triple gear and internal gears. A poking spring makes an internal gear regulating ring move and fix one of the internal gears. Gears on the intermediate gear disk mesh with planetary gears on four planetary gear shafts on the main shaft, and the planetary gears also mesh with the fixed internal gear.

Abstract: A power transfer system for a motor vehicle is disclosed to include a transfer case having a clutch assembly arranged to control speed differentiation and torque biasing across an interaxle differential, a hydraulic clutch actuation system operable to control actuation of the clutch assembly, sensors for detecting and generating sensor signals indicative of various dynamic and operational characteristics of the vehicle, and a controller for controlling the hydraulic clutch actuation system in response to the sensor signals. Upon the occurrence of traction loss, the clutch assembly is automatically actuated for limiting interaxle slip while transferring increased drive torque to the non-slipping driveline.

Abstract: The automatic transmission for a motor vehicle having one starting element, one input shaft, one output shaft and gear sets for determining the reduction ratio and having one planetary reversing gear for reversal of direction of rotation of the input shaft. In the planetary reversing gear is situated one ring gear consisting of one ring (1) with inner teeth and with a smooth outer wall and of one disc carrier (2) segmentally welded on the ring.

Abstract: A linear actuator includes a housing, a spindle rotatable in both directions, a threaded nut driving a piston rod, and a motor capable of driving the spindle through a transmission, a disengagement unit being arranged in the transmission for interrupting the connection between the motor and the spindle in case of operational failure, such as overloading of the spindle, the disengagement unit comprising brake means adjustable with respect to the actuator housing to cooperate with coupling means for control of the rotational speed of the spindle when this is disengaged from the motor. The linear actuator provides an emergency function ensuring that the linear actuator and the carried load are not damaged by overloading of the actuator.

Abstract: A switching device of reduction gear set is coupled to and drive by a planetary gear system for driving an output tool. The switching device includes a casing defining an interior space having an inside surface on which an internal gear is formed. The casing also defines two opposite elongate slots. A switching member is received in the casing and movable between a first position and a second position.

Abstract: The power shift for vehicles has clutches and brakes in the form of multi-disc clutches which consist of disc sets; instead of the multi-disc brake for the reverse drive range, a form-locking clutch such as a disc synchronization is provided which in engaged state transmits the retaining torque via form locking and in disengaged state is freely rotatable and thus free of loss.

Abstract: An annulus gear for an automatic transmission and method of construction. The annulus gear is a one-piece or monolithic gear having a set of gear teeth formed on an inner surface thereof for operably coupling with a set of planetary gears. A plurality of lugs extend axially from a rearward edge of the annulus gear and cooperate with a plurality of radially extending tangs formed on an adjacent clutch hub for rotatably coupling the annulus gear with an adjacent clutch mechanism. Similarly, a forward edge of the annulus gear has a plurality of reliefs formed therein which are adapted to receive a plurality of tangs radially extending from an adjacent planetary gear set carrier. In this manner, the annulus gear may also be operably coupled to an adjacent planetary gear set.

Abstract: A drive speed control system having an input shaft and an output shaft in communication with a planetary gear mechanism. The planetary gear mechanism is in communication with a first rotatable drum member and a second rotatable drum member which is positioned radially inward relative to the first rotatable drum member. A first annular inflatable member is positioned radially outwardly of the first rotatable drum member and a second annular inflatable member is positioned radially between the first and second rotatable drum members. The first and second annular inflatable members are in communication with a control system to cause the inflation of the first annular inflatable member to inhibit rotation of the first rotatable drum member and to cause inflation of the second annular inflatable member, when the first annular inflatable member is uninflated, to cause the first rotatable drum member to rotate in unison with the second rotatable drum.

Abstract: A food mixer having a planetary gear system. The mixer comprises a vertically extending stand housing an electric motor, a base to support the stand, an overhang arm connected to the stand, and a gear system housed in the overhang arm. The gear system includes a center shaft having a center gear mounted thereto, the center shaft being drivingly coupled to the motor and rotatable about its axis. The gear system further includes an agitator shaft having an agitator gear mounted on an end thereto, the agitator shaft being oriented generally parallel to the center shaft and located such that the agitator gear meshes with the center gear. The gear further includes a ring gear having a set of internal gear teeth, the ring gear encircling the center gear and the agitator gear whereby the agitator gear meshes with the ring gear.

Abstract: An automatic transmission for a vehicle with a reverse gear brake that includes a case. A predetermined rotational element, having gear teeth and an axis, is disposed within the case. The predetermined rotational element only operates as a rotational element when achieving a reverse gear mode. A brake has a gear member. The gear member is attached to the case so that it cannot rotate relative to the case, but is movable along the axis of the predetermined rotational element so that it can be engaged and disengaged with the teeth of the predetermined rotational element. The predetermined rotational element is fixed to the case so that it cannot rotate relative to the case when the gear teeth engage the gear member.

Abstract: A clutch mechanism disposed between an engine (2) and a transmission (3) includes an input part (10) supplied with torque from the engine (2), an output shaft (11) of the transmission (3), a planetary gear train (12) and a clutch device having clutches (13) and (14). The planetary gear train (12) has a sun gear (31), planetary gears (32) meshing with the sun gear (31), a carrier (34) carrying the planetary gears (32), and an ring gear (33) meshing with the planetary gears (32). The clutch device is operable to selectively engage and disengage portions of the planetary gear train (12) such that one of two differing power transmission paths may be used to transmit torque. One power transmission path transmits torque at a lower speed than the other transmission path.

Abstract: An ergonomic hand wheel for use on a hand brake system on a railway car in which a hand wheel includes a planetary gear system to provides a mechanical advantage to significantly reduce the effort and force required to turn the hand wheel. The planetary gear system includes a sun gear rigidly interconnected to the hand wheel and a hub member rotatably interconnected to the hand wheel which is independently rotatable relative to the hand wheel. The hub member further including a socket at the axis for attaching the hub member to a rotatable drive member of a hand brake system on a railway car, as well as a plurality of planetary gears rotatably secured thereto to mesh with and engage the sun gear. A fixed ring gear attached to a structural element independent of the hand wheel and the hub member, encircles, meshes with and engages the planetary gears.

Abstract: For the individual drive of a wheel of a motor vehicle, a planetary transmission can be combined into a single module with a motor. The planetary transmission has a sun wheel which on a motor shaft of the motor, a ring gear and a planet carrier with planet wheels which are rotationally mounted on journals. The planet carrier and the ring gear are non-rotationally connected to a support part which simultaneously forms the transmission housing, or to a driven shaft part which is rotationally mounted on the support part. The planet carrier is designed as a shaped sheet metal and comprises a sheet metal base wall which runs axially perpendicular to the axis of rotation of the planetary transmission, into which sheet metal base wall the journals are shaped in a cup shape.

Abstract: This invention discloses an improved planetary gearing-unit. The device includes: an input shaft; a sun gear, tightly linked to the input shaft, rotatable as driven by the input shaft; several planet gears, engaged with the sun gear; a fixed ring gear, encircling the circumference of the planet gears and engaged with the various planet gears; a planet gear carrier, being rotatable driven by the planet gears' revolving motion; an output shaft; a gearshift device, allowing the output shaft to be connected either to the input shaft or to the planet gear carrier, optionally, and to correspondingly rotate either along with the input shaft or with the planet gear carrier, so as to allow for switching into high or low gear. In this device assembly, both in high and in low gear the ring gear is fixed in the planetary gearing box without motion, thus not developing the stirring of oil and overcoming the problem of temperature rise and mechanical deformation, furthermore reducing the waste of energy.

Abstract: A power transmission comprises a first coil spring wound to a casing and a first drum and having the diameter to be extended by rotation of an internal gear in one direction, a second coil spring wound to the casing and a second drum and having the same winding direction as the first coil spring and the diameter to be extended by rotation of the internal gear in the other direction, and cylinder members arranged on outer peripheries of the first and second coil springs for serving to restrict extension of the diameter of the first and second coil springs, the cylinder members being rotatable relative to the internal gear.

Abstract: A power train between the engine and the wheels of a motor vehicle has a start-up component which receives torque from the engine and transmits torque to an infinitely variable transmission through a reversible torque transmitting apparatus. The transmitting apparatus comprises at least one planetary transmission, a first clutch which can be engaged to transmit torque from the start-up component and the planet wheel carrier of the planetary transmission to an input/output element, and a second clutch which can be engaged, when the first clutch is disengaged, to connect the internal wheel of the planetary transmission to a housing for the planetary transmission. The first clutch is mounted, at least in part, on the planet wheel carrier and the second clutch is mounted, at least in part, on the internal wheel of the planetary transmission.

Abstract: A drive system for driving a flexible elongate member such as a haulage chain for a mineral mining machine or scraper-chain assembly of a scraper-chain conveyor of a mineral mining installation employs main and auxiliary drive units each equipped with an electric asynchronous motor drivably connected through a gearing assembly to a sprocket around which the chain or scraper-chain assembly is entrained. The gearing assemblies each employ a multi-disc clutch which is subjected to variable loading pressure and slippage by means of a valve actuated by electrical signals provided by an electronic controller. Each clutch acts through gears on a ring gear of planetary gearing and the ring gear wheel is subjected to a controlled supportive torque. The electronic controller is designed to actuate the associated valves to adjust the clutches to balance loading on the motors of the units.

Abstract: In a range change transmission for vehicles which is designed as planetary transmission (2), a sun gear (3) is driven by a drive shaft (4) of an added basic transmission while a planet carrier (8) of the planetary transmission (2) is rigidly connected with an output shaft (9) of the range change transmission. To engage a low ratio group of the range change transmission, a ring gear (6) is connected with a transmission casing (1) by means of a sliding sleeve (25). In a direct through drive, the sliding sleeve (25) connects the ring gear (6) with a planet carrier (8). The construction costs should be reduced by using a single-piece synchronizer ring (22), the single-piece synchronizer ring which is effective for both shift directions cooperating by both its friction faces (23) with bevel faces (18 and 19) on the transmission casing (1) and on the planet carrier (8).

Abstract: A planetary gear unit made up of a number of inter-connected co-axial three element planetary gear trains (12, 13) each including a sun (15, 19) a planet carrier (17, 21) and an annulus (14, 18). One (12) of the planetary gear trains is a dominant train with a first element (14) connected to an input member (10) of the unit and a second element (17) connected to an output member (11) of the unit. The remaining train or trains (13) of the unit are connected to the third element (15) of the dominant train to vary, by the use of associated clutches (C1, C2, C3, C4) acting between elements of the trains and ground, the direction and speed of rotation of the third element (15), thus providing a number of overall gear ratios from the unit.

Abstract: A transmission having an input shaft with an input sun gear and a reverse rotation control shaft with a reverse rotation sun gear rotatably secured to the input shaft. A first and a second carrier, terminating in an output shaft, are rotatably secured on the reverse rotation control shaft and input shaft, respectively. Locking pins interconnect the first and second carriers to enable simultaneous rotation of the carriers. Input planetary gears are in mechanical communication with the input sun gear. A reverse rotation planetary gear and an input planetary gear are interconnected and each such interconnected gear is rotatably mounted on a locking pin to enable simultaneous rotation of the interconnected gears about the locking pin. Each reverse rotation planetary gear is in mechanical communication with the reverse rotation sun gear. A low speed ring gear is rotatably secured on the second carrier.

Abstract: An automatic variable speed transmission with an input shaft, an input sun gear formed on the input shaft and a first and second carrier rotatably mounted on the input shaft with the second carrier terminating in an output shaft. First and second locking pins secure and interconnect the two carriers together to enable simultaneous rotation of the carriers. A low speed ring gear is rotatably mounted on the input shaft. A first differential gear is rotatably mounted on each first locking pin and each first differential gear is in mechanical communication with the input sun gear and the low speed ring gear. A reverse ring gear is rotatably mounted on the output shaft. A second differential gear is rotatably mounted on each second locking pin and each second differential gear is in mechanical communication with the reverse rotation ring gear and with a first differential gear.

Abstract: A transmission having an input shaft with a sun gear (12), a medium speed shaft with a sun gear (14) rotatably mounted on the input shaft, a low speed shaft with a sun gear (16) rotatable mounted on the medium speed shaft and a reverse rotation shaft with a sun gear (18) rotatable mounted on the low speed shaft. A first carrier and a second carrier terminating in an output shaft are rotatably mounted on the reverse shaft and input shaft, respectively. Locking pins interconnect first and second carriers. Reverse rotation gear is integrally formed with an input gear and rotatable mounted on a locking pin. Each reverse rotation gear meshes with the reverse sun gear (18) and each input gear meshes with sun gear (12). Low speed gears are integrally formed with a medium speed gear and rotatable mounted on a locking pin. Each low speed gear meshes with sun gear (16) and each medium speed gear meshes with the input gear and the sun gear (14).

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 rotary element engaging device of an automatic transmission includes a stationary member, a planetary gear set having rotary elements, a frictionally engaging element interposed between the stationary member and one of the rotary elements, a one-way clutch interposed between the stationary member and the one rotary element, and an operating member for engaging and disengaging the frictionally engaging element. The rotary element is adapted to be selectively engaged with the stationary member through two paths formed of the frictionally engaging element and the one-way clutch. The one-way clutch is disposed between the frictionally engaging element and the operating member. The one-way clutch includes an inner race connected to the one rotary element and an outer race fixed to the stationary member. The operating member is adapted to act on the frictionally engaging element through the outer race.

Abstract: An apparatus for changing the rotational speed of a mechanism includes an input shaft, several planetary gear units, an output rotor, a rotating disc and a casing. The planetary gear units are connected together. The sun gear of the first unit is connected to the input shaft and the carrier of the last unit is connected to output rotor. An internal gear of one of planetary gear units can rotate in the casing but can be stopped by an internal gear stopping device. The input shaft is connected to the rotating disc. The rotating disc can be brought into contact with the output rotor by a disc-contacting device. The disc-contacting device and the internal gear stopping device are driven in a complementary manner. When the internal gear stopping device is excited and the disc-contacting device is unexcited, the output rotor rotates at a low speed level. When the disc-contacting device is excited and the internal gear stopping device is unexcited, the output rotor rotates at a high speed level.

Abstract: A power driving device for a bicycle has a planetary gear assembly mounted with a driving axle shaft, including a housing fixed to the bicycle frame with a side wall rotatably mounting the driving axle shaft and a flange wall projecting laterally from the side wall which contains the planetary gear assembly and has a ring gear fixed thereto, a pinion gear carrier fixed to the driving axle shaft for rotation together therewith upon application of a driving force to the pedals, and a sun gear fixedly connected to a driving sprocket wheel for transmitting power from the pedals to the rear wheel of the bicycle. The planetary gear assembly can provide a power changing ratio in the range of about 3.5, so that the driving sprocket wheel can have a number of teeth substantially less than the number of teeth on a conventional sprocket wheel yet, when multiplied by the power changing ratio of the planetary gear assembly, is equivalent to more than double that of the conventional sprocket wheel.

Abstract: A planet gear type reduction gear device comprises a casing, a rotating shaft rotatably supported in the casing, a sun gear formed at an outer circumferential portion of the rotating shaft, a planet gear supported by a support pin and meshed with the sun gear, and an internal gear wheel attached to the inner circumferential portion of the casing and meshed with the planet gear whereby the planet gear revolves around the sun gear while it rotates on the support pin, characterized in that at least one projection is formed at an end surface in the axial direction of the internal gear wheel, and at least one recess having the shape corresponding to the projection is formed in the casing so that the internal gear wheel is fixed to the casing by the mutual engagement.

Abstract: A modified planetary gear assembly includes a sun gear, planetary gears, an internally-toothed ring gear and a carrier, and can either transmit or not transmit torque from the sun gear to the carrier. The internally-toothed ring gear has outer peripheries on both sides suitable for being supported by a bearing device and a middle groove on the outer surface having timing teeth shaped around the groove. The peripheries are supported by a bearing device. A stopper device which is movable in a radial direction is mounted at a point around the middle groove. When the stopper device is moved forward to engage with the timing tooth, the internally-toothed ring gear is fixed and torque is transmitted from the sun gear to the carrier. When the stopper device is retracted, the internally-toothed ring gear freely rotates and no torque is transmitted. Thus, there are two states of torque transmission.

Abstract: A variable transmission includes an input shaft with an input sun gear mounted thereon and a differential gear carrier rotatably mounted thereon to enable independent rotation about input shaft. A transmission shaft is coaxially mounted on input shaft. A differential gear carrier is rotatably mounted on the transmission shaft. A plurality of pins interlink carriers to enable simultaneous rotation. A first differential gear is rotatably mounted on each pin, and each gear is meshed with an input sun gear. A control ring gear is rotatably mounted on the transmission shaft with the controlling gear meshed with each differential gear. A plurality of rods rotatably secures each carrier to enable rotation about its axis and to enable simultaneous rotation of the carriers. An output shaft terminating in an output ring gear is rotatably mounted relative to the input shaft. A second differential gear is rotatably mounted on each rod and is meshed with the gear differential and output ring gear.

Abstract: An apparatus for providing an automatic transmission, including at least one planetary gear, at least one braking pump, at least one flow control valve and an oil path system provided therebetween for obtaining a continuously variable transmission (CVT). Each braking member of at least one planetary gear of the present invention is connected to each rotor shaft of at least one braking pump. A sensing means is provided for sensing a rotation speed of a rear propeller shaft and to output predetermined amounts of pressurized working fluid in response to the rotation speed of the rear propeller shaft. A first flow control valve provided on an oil path system is controlled by the pressurized working fluid to be closed to various extents so as to reduce the flow within the oil path system. The rotation speed of at least one braking pump together with each braking member is also reduced, on extreme conditions the pumps even stop.

Abstract: A torque control tool driver having a torque responsive clutch which holds a rotatable ring gear of a motor driven reduction gear train stationary to effect rotation of a tool driving spindle and which is operable in the presence of pre-determined torque output of such spindle to automatically release the ring gear for rotation whereby to disconnect the spindle from the driving motor. Following spindle disconnect, the driving motor is automatically deenergized in response to rotational movement of the ring gear.

Abstract: A planetary gear transmission having a sun gear and a ring gear, planetary gears engaging the sun and ring gears, a carrier having a radial flange and carrier pins fixed to the flange to rotatably support the planetary gears, and a first and a second gear rotatable with the carrier and engaging each other. The first gear has an external toothed portion located on one of opposite sides of the flange as seen in the axial direction, while the planetary gear are located on the other side of the flange. At least one lubricant passage is formed so as to extend through the flange. Each passage communicates with the corresponding planetary gears and has an open end open in one of the opposite surfaces on the side of the external toothed portion of the first gear. An annular lubricant receiver is disposed coaxially with the carrier, for receiving a lubricant which is fed from a meshing point of the first and second gears in the axial direction from the first gear toward the planetary gears.

Abstract: A two-speed drive arrangement has input and output shafts operatively interconnected by a clutch and a planetary gear arrangement. The clutch us selectively movable to three positions to establish the direct drive, bypassing the planetary gear arrangement, a reduction drive through the planetary gear arrangement and a neutral condition. In both the neutral condition and the direct drive, the planetary gear arrangement is free of direct rotary influence from the input and output shafts and components thereof may remain stationary.