Abstract: Disclosed is a power transmission apparatus. The power transmission apparatus includes a ring gear; first and second gears engaged with one side of the ring gear; a clutch interposed between the first and second gears and moved toward one of the first and second gears according to a rotational direction thereof so as to be coupled with one of the first and second gears; and a driving shaft providing power to the clutch.

Abstract: An electric power tool includes a housing, a motor disposed in the housing, a planetary gear reduction mechanism and an internal gear. The planetary gear reduction mechanism includes multi-stage planetary gears, multi-stage carriers each configured to carry a plurality of planetary gears, and a bearing assembled with a final-stage carrier from a rear side of the final-stage carrier to rotatably support the final-stage carrier. The internal gear is configured to be rotatable and axially slidable while allowing planetary motion of final-stage planetary gears supported by the final-stage carrier. A gear portion provided on the final-stage carrier is formed as a separate gear which is assembled with the final-stage carrier from the rear side of the final-stage carrier after assembling the bearing with the final-stage carrier.

Abstract: The brake system includes a sun gear fixedly mounted to an input shaft. The sun gear is mounted inside a planetary chassis between two pinion gears. The sun gear has teeth protruding from its circumference on both sides thereof. The teeth are aligned in such a way that when the sun gear is turned to a neutral position, the teeth are engaged with the pinion gears, preventing a rotation of the pinion gears, and when the sun gear is rotated away from the neutral position, the teeth are disengaged from the pinion gears allowing the pinion gears to rotate. When no torque is applied to the input shaft, the sun gear is urged back to its neutral position. In a second embodiment, the sun gear is urged in a drag mode against the trailing side of the teeth on the pinion gears, for producing a pawl-and-latch noise during use.

Abstract: A power tool is provided with a device for automatically switching transmission output, including at least one stage of transmission part having a sun gear, a planetary gear carrier, and a gear ring for transmission, a sensing system having a sensing component for sensing variation of operating condition, and a control device cooperated with the sensing system for controlling the transmission output of the transmission part. A first transmission output is generated when the sun gear, the planetary gear carrier, and the gear ring in the same stage are in a first transmission state, and a second transmission output is generated when the variation of operating condition received by the sensing component reaches a predetermined value and then being fed back to the control device by the sensing system.

Abstract: Disclosed is a reclining mechanism comprising: a first plate fixed to a seat back; a second plate fixed to a seat cushion; a plurality of planetary gears in meshing engagement with internal gears of the first and second plates; a sun gear in meshing engagement with the planetary gears; and a holding member rotatably holding the planetary gears. An inner peripheral wall of the holding member and an opposing wall section of the sun gear define therebetween a wedge-shaped space in which a restriction member is displaceably disposed. The opposing wall section of the sun gear is formed such that a width of the wedge-shaped space is gradually narrowed toward a counter direction opposite to a specific direction along which the first plate is urged to be rotated according to a force applied to the seat back in a rearward tilting direction.

Abstract: Disclosed is a reclining mechanism comprising: a first plate fixed to a seat back; a second plate fixed to a seat cushion; a plurality of planetary gears in meshing engagement with internal gears of the first and second plates; a sun gear in meshing engagement with the planetary gears; and a holding member rotatably holding the planetary gears. An inner peripheral wall of the holding member and an opposing wall section of the sun gear define therebetween a wedge-shaped space in which a restriction member is displaceably disposed. The opposing wall section of the sun gear is formed such that a width of the wedge-shaped space is gradually narrowed toward a counter direction opposite to a specific direction along which the first plate is urged to be rotated according to a force applied to the seat back in a rearward tilting direction.

Abstract: A planetary gear mechanism for a bicycle, and more particularly to a planetary gear mechanism comprising a first planetary mechanism connected coaxially in series to a second planetary mechanism, which second planetary mechanism is connected coaxially in series to a third planetary mechanism, the second planetary mechanism output is a step up in speed from the first planetary mechanism output, the third planetary mechanism output is a step up in speed from the second planetary mechanism output.

Abstract: A fixed internal gear hub comprising a fixed axle, an input member and an output member each rotatably mounted about the axle, an epicyclic gear system comprising at least one sun gear, rotatably mounted about the axle, planet pinions disposed in a planet cage and a gear ring. The gear ring is connected non-rotatably to the input member. The planet cage is connected non-rotatably to the output member. A clutch enables the input member to be selectively non-rotatably connected to the planet cage and a selector key enables the sun gear to be selectively locked rotationally to the axle. The hub provides two fixed gear ratios and further fixed gear ratios may be provided by adding an additional sun gear or gears.

Abstract: A wheeled vehicle with an adjustable gear arrangement is disclosed. The gear arrangement can be adjusted by a child riding the wheeled vehicle.

Abstract: A power tool with a housing, a transmission and a switch mechanism. The switch mechanism has an actuator, a rail, a switch and first and second springs. The actuator is non-rotatably but slidably coupled to the housing for movement along a longitudinal axis of the transmission between a plurality of positions to selectively engage one or more members of the transmission at each of the positions such that the transmission operates in one of a plurality of different overall speed ratios. The rail is fixedly coupled to the actuator and is received through the switch such that the switch is slidably mounted on the rail. The first and second springs are configured to bias the switch relative to the actuator in different directions.

Abstract: The invention relates to a bicycle provided with a gearwheel consisting of a transmission element (3) rigidly connected to a drive shaft (1), a gear rim (4) which comprises an internal toothed gearing and in front of which all other components of a hypocycloidal gearwheel are fixed, a planetary gear (5) which is provided with several gearings and engaged with the gearing of the gear rim (4) by one of the gearings thereof, a sliding member (8) disposed between the plurality of gearwheels (6) and an output shaft (2) and displaceable in the direction thereof between a plurality of positions in each of which one of the gearwheels (6) and said output shaft (2) are rigidly interconnected.

Abstract: A tool chuck may include a shaft supporting chuck jaws. The shaft may provide a first transmission power path for rotationally driving the chuck jaws. The shaft may have a through hole. A chuck actuating mechanism may be provided in the through hole. The chuck actuating mechanism may provide a second transmission power path for opening and closing the chuck jaws.

Abstract: An automatic speed reduction ratio switching apparatus is equipped with a sun gear connected to an input shaft, first and second carriers connected to a feed screw shaft, planetary gears meshed with the sun gear and which are mounted rotatably in the first and second carriers, and an internal gear meshed with the planetary gears and which is capable of movement in an axial direction. A packing member is arranged between the internal gear and the second carrier, for regulating movement in the axial direction of the internal gear, while enabling movement of the internal gear in the axial direction when a thrust force is applied at or above a predetermined value.

Abstract: An epicyclically or so called planet gear system with two annulus gears, two solar gears with external toothing, and two planet gears one of which meshing with an annulus gear and one of which meshing with a sun gear. The gear is interchangeable between a first configuration forming a gear chain between the input shaft and the output shaft via interaction between of the planetary gears and one of the sun gears and a second configuration forming the gear chain via interaction between the other planetary gear and the other sun gear. Accordingly, the gear can be shifted between two different gear ratios in a simple and reliable manner.

Abstract: An air actuated shift mechanism is housed within a drive axle housing and can be used to actuate a two-speed shifter, or it can be used to actuate a differential locking mechanism. The air actuated shift mechanism includes a lock member and an engageable member that is selectively engaged by the lock member. When the lock member and engageable member are in an engaged position, a first axle function is provided such as a low speed or a locked differential condition. When the lock member and the engageable member are in a disengaged position, a second axle function is provided such as a high speed or an unlocked differential condition. A shift member moves one of the lock member and the engageable member to provide the engaged position, and an air actuated piston controls movement of the shift member.

Abstract: A two-stage machine tool transmission, in particular a spindle drive transmission, includes a planetary gearset in which a spindle or a spindle insert can be connected to a drive output of a transmission, which has a first drive output shaft and the second drive output shaft, such that the first drive output shaft is connected in a rotationally fixed manner to a drive input shaft and can optionally be connected, via a first shift element, to a sun gear of the planetary gearset. The second drive output shaft is connected in a rotationally fixed manner to a carrier of the planetary gearset. A ring gear of the planetary gearset is connected in a rotationally fixed manner to the transmission housing and a second shift element is provided such that a connection between the spindle or a spindle insert and, optionally, the first or the second drive output shaft, is possible.

Abstract: A transmission mechanism includes a motor, a first planetary gear set, a clutch connected with a sun gear, a second planetary gear set, a transmission shaft, an intermediate shaft and an output shaft. When the clutch is moved to the first position, the transmission shaft engages with the second planetary gear set and the output shaft, such that the power can be transmitted to the output shaft via the first planetary gear set, the second planetary gear set and the transmission shaft. When the clutch is moved to the second position, the transmission shaft disengages from the second planetary gear set and the output shaft, such that the power can be transmitted to the output shaft via the first planetary gear set, the second planetary gear set, the transmission shaft and the intermediate shaft.

Abstract: Traction planets and traction rings can be operationally coupled to a planetary gearset to provide a continuously variable transmission (CVT). The CVT can be used in a bicycle. In one embodiment, the CVT is mounted on the frame of the bicycle at a location forward of the rear wheel hub of the bicycle. In one embodiment, the CVT is mounted on and supported by members of the bicycle frame such that the CVT is coaxial with the crankshaft of the bicycle. The crankshaft is configured to drive elements of the planetary gearset, which are configured to operationally drive the traction rings and the traction planets. Inventive component and subassemblies for such a CVT are disclosed. A shifting mechanism includes a plurality of pivot arms arranged to pivot about the centers of the traction planets as a shift pin hub moves axially.

Abstract: A differential limiter, including: differential mechanism, including: input member, first output member, second output member, and differential gear connecting the above three members so that the above three members differentially rotate; shaft member connected to the first output member and serving as output member of driving force; first cam mechanism including: first cam face on the first output member, and second cam face on the shaft member, the first cam face and second cam face are oppositely connected with each other in axial direction, to cause first axial thrust force and second axial thrust force according to driving torque; and frictional clutch between two of the above three members, and transmitting a differential limit torque. The first axial thrust force of the first output member presses the frictional clutch from first axial end. The second axial thrust force of the shaft member presses the frictional clutch from second axial end.

Abstract: An improved self-priming, centrifugal pump arrangement for mixed-media flow includes a volute housing having a suction and a discharge, a volute scroll disposed within the volute housing, an impeller disposed within the volute scroll, a suction hopper and a discharge hopper within volute housing, a back cover and a wear plate attached to the volute housing. By optimizing the geometry of these internal components, noise is reduced, efficiency of the pump is improved, and the self-priming feature is maintained.

Abstract: An air actuated shift mechanism is housed within a drive axle housing and can be used to actuate a two-speed shifter, or it can be used to actuate a differential locking mechanism. The air actuated shift mechanism includes a lock member and an engageable member that is selectively engaged by the lock member. When the lock member and engageable member are in an engaged position, a first axle function is provided such as a low speed or a locked differential condition. When the lock member and the engageable member are in a disengaged position, a second axle function is provided such as a high speed or an unlocked differential condition. A shift member moves one of the lock member and the engageable member to provide the engaged position, and an air actuated piston controls movement of the shift member.

Abstract: A differential transmission apparatus. The differential transmission apparatus includes a base, a fixed gear, a rotating member, an output shaft, a reduction gear, an acceleration gear, a shifting device, at least one transmission shaft, at least one first gear, at least one second gear, and at least one third gear. The fixed gear is fixed on the base. The rotating member is adjacent to the fixed gear. The output shaft rotatably fits in the rotating member, fixed gear, and base. The reduction gear is slidably disposed on the output shaft. The acceleration gear is slidably disposed on the output shaft and connected to the reduction gear. The shifting device is disposed on the base and output shaft. The first, second, and third gears are fixed on the transmission shaft and the third gear is between the second gear and the rotating member.

Abstract: A motorized gear reducer wherein a first external gear 41 is mounted on an input rotary shaft 11 coupled to a driving motor 3 and wherein a second external gear 43 is capable of engaging with the first external gear. The front end portion 63 of the first external gear side of the input rotary shaft is unable to make a relative rotation with respect to the input rotary shaft but made movable in the axial direction of the input rotary shaft. The front end portion thereof movably axially engages with the first external gear. The front end portion and the first external gear are allowed to select one of the conditions including making an integral rotation and freely making relative rotations in accordance with the axial movement of the front end portion.

Abstract: An auxiliary transmission in series with a first automotive transmission adds extra gears through an underdrive feature, which may be manually controlled by an operator or automatically controlled by a computer or controller. The extra gears are useful in matching the output torque of the engine and the transmission to the load on the automobile or vehicle powered by the transmission, and thereby improves fuel economy and transportation performance. The transmission may be installed as factory equipment, or may be added later, such as an after-market or dealer-installed option.

Abstract: A transfer for a four-wheel drive vehicle of simplified structure in which speed-reducing and center differential functions are implemented by a single planetary gear set includes an input shaft; a first output shaft disposed coaxially with respect to the input shaft; a ring gear which co-rotates with the input shaft; a first pinion meshed with the ring gear; a second pinion in mesh with the first pinion at all times; a carrier for axially supporting the first and second pinions; a sun gear which, by being slid, selectively meshes with the first pinion or the second pinion; a brake for locking the sun gear when the sun gear and the first pinion mesh (the low position of the transfer); a driving gear which meshes with the sun gear when the sun gear and the second pinion mesh (the high position of the transfer); a sleeve mounted on the first output shaft and shifted for engaging the driving gear with the first output shaft in the direction of rotation; a second output shaft disposed in parallel with the first o

Abstract: An epicyclic change speed gear comprises a fixed spindle (4) and side-by-side sun pinions (1, 2, 3) rotatable on the spindle. A gear selector key (5) is adapted for selective cooperative engagement with one of the sun pinions to lock that pinion to the spindle. The key (5) is operated by a sleeve (15) disposed for rotational movement relative to the spindle (4). Rotation of the sleeve (15) displaces the key (5) axially to lock the selected sun pinion. One or both axial ends of the sleeve (15) are angled such that different degrees of rotation cause different axial displacements of the key (5) and cause different sun pinions to be locked.

Abstract: A shiftable pedal bearing gearing for use in a pedal bearing of a type having a pedal bearing housing and a crank axle axially traversing the pedal bearing housing and carrying at least one pedal crank, for use in a bicycle or the like, includes a chainwheel mounted on the crank axle and a disk extending parallel to the chainwheel. Arranged between the chainwheel and the disk is a coupler which is rotatably mounted on the crank axle and movable in axial direction between two switching positions. The coupler, on the one hand, and the chainwheel and disk, on the other hand, have opposing sides of complementary configuration to allow interlocking or form-fitting connection at uniform surface pressure between said coupler and the chainwheel in one switching position and the disk in the other switching position.

Abstract: A two-speed gearbox, having an input shaft which is connected to a spline shaft, when the gearbox is in direct drive, a front part of the spline shaft is in engagement with a shaft coupler which drives an output shaft to transmit a 1:1 ratio; when the gearbox is geared down, the spline shaft is moved such that its front part is separated from the shaft coupler and engaged with a sun gear of the planetary gear train within a housing which makes the internal splines of a frame of the planetary gear engage with external splines of the shaft coupler. Power is transmitted from the spline shaft, through the speed reduction of the sun and planetary gear train and to the planetary gear frame, and then is transmitted to the shaft coupler and sent out through the output shaft.

Abstract: The fishing reel features a three speed planetary drive in a gear housing on one side of the reel, and an improved mechanism for drag control in a clutch housing on the other side. The planetary drive uses an axially slidable high speed sun gear which is coupled by a transverse pin to a positioning rod in an axial hole in the reel axle. A compression spring forces the positioning rod to the outboard end of its travel where the reel provides a direct drive. Two conical grooves in the positioning rod are used in conjunction with a pair of steel balls and a spring loaded ball retainer, to trap the positioning rod in one or the other of two inner positions required for intermediate or high speed. The improved mechanism of drag control features a calibration disk; a drag lever with a spring loaded pin mounted near the end of the lever; and a strike ring engaged by the spring loaded pin with conical depressions in the strike ring indicating the lever positions for free spool or strike.

Abstract: A shiftable pedal bearing for a bicycle or the like includes a pedal bearing housing supporting a hollow crank axle carrying pedal cranks, and a gear casing with pertaining chainwheel and accommodating a disk which extends parallel to the chainwheel. Arranged in the crank axle is a switch shaft which is actuatable from outside by a shifter so that a coupler, which is operatively connected to the switch shaft, is selectively engageable with circumferential recesses in the chainwheel and a disk. Each recess of the chainwheel and each recess of the disk is of stepped configuration to define a first recess section and a second recess section, with the coupler in a first stage engaging the first recess section with play and in a second stage snugly fitting in the second recess section with no play.

Abstract: A multi-speed mechanical automatic transmission has two planetary gear trains, each including a sun gear, planet gears mounted in a planet carrier, and a ring gear. The first planetary gear train provides low gear and direct drive; the second train modifies low gear operation of the first train to provide an intermediate gear operation. The first sun gear is fixed to an input shaft, and the first planet carrier drives an output shaft. The second planet carrier is coupled to rotate the first ring gear in one direction, and free wheels or selectively actuated friction brakes prevent rotation of the first and second ring gears in the opposite direction. The first planetary train has helical gears, and a direct drive clutch selectively couples the first ring gear to the first planet carrier.

Abstract: According to an illustrative example of the invention a transmission lever for transmitting an actuating force from a pull cable to a push rod of a bicycle hub gear change mechanism is pivotally mounted on a housing. The housing is provided with a sleeve which sleeve is rotatable and axially fixed with respect to the housing. The sleeve is provided with an internal thread for engagement with an external thread of a hub axle. For assembling the housing with the hub axle the sleeve can be locked against rotation with respect to the housing.

Abstract: A front axle drive assembly is disclosed which requires less lateral distance than known prior art assemblies. The drive is preferably for use in four wheel drive vehicles having an offset differential case. In such systems, the differential case is offset toward one side from the vehicle center line to accommodate the engine at the center line. An axle half on the offset side thus has reduced lateral space. The invention includes the use of a planetary system, requiring relatively little lateral space to split torque toward the two front wheels, thus providing additional lateral space for the axle half on the offset side. A constant velocity universal joint mounted between the planetary drive and the offset side axle half is received within the differential case. The lateral space savings resulting from the use of the planetary system allows the offset side axle half to be longer, providing benefits to the vehicle suspension system.

Abstract: A geared rotary actuator (1) including planet gears (2) disposed around a shaft (S), sun gears (8, 9) meshing with the planet gears (2) and with axially displaceable ramp members (10, 11) splined to the shaft (S) at least a pair of ball members (13, 14) are accommodated in pockets formed between the respective ramp members (10, 11) and a further member (12). Ramp surfaces (11a, 11b, 12a, 12b, 10a, 10b) are provided at the respective pockets to enable the ball members (13, 14) to ride out of the pockets upon an occurrence of an excessive torque thereby axially displacing the respective ramp members (10, 11) against a bias of springs (15, 16) coupled to the sun gears (8, 9) through planet gear radial support members (4) integrally formed with the sun gears (8, 9) thereby disconnecting a torque path through the actuator (1).

Abstract: A compact gearing arrangement in a transmission which can be shifted accurately with simple components and where strain on the step-down gearing components by high centrifical forces is largely avoided.

Abstract: The invention relates to a drive hub for six speeds, with an integral back-pedal brake device (28, 31) for bicycles or the like. The gear system comprises two separate planetary gear units (5b, 6a, 7b and 16, 26, 27 respectively), each of which comprises one stage and of which a primary gear unit (5b, 6a, 7b) is incorporated in the drive member (5), while a secondary gear unit (16, 26, 27) is disposed in the hub sleeve (1). The coupling elements (2, 3, 23 29) of the drive hub are constructed in such a manner that lost motion positions are avoided both during driving and during braking. During braking the torque flow is always guided through the secondary gear unit (16, 26, 27) in the hill speed position by means of separate detents (23) which come into operation only during the backward rotation of the drive member (5), so that the back-pedal brake is operated with a stepped-up brake force.

Abstract: The vehicle drive transmitting mechanism for a track laying vehicle has a coupling between the transmission output shaft and the final drive input. This coupling is disengageable from the transmission output shaft to permit vehicle towing or transmission removal. The coupling is movable from the drive connecting position to two other positions so that during towing, a neutral condition is attained and during transmission removal, a locking arrangement at the final drive is attained.