Abstract: A sun gear member, planetary gear members, a first ring gear member, and a second ring gear member together form a paradox gear mechanism. A clutch mechanism is disposed between an input gear member and the first ring gear member. The clutch mechanism rotates the first ring gear member, when the input gear member rotates. The clutch mechanism disconnects transmission of the power to the input gear member when the first ring gear member rotates. The sun gear member and the first ring gear member are individual input elements. When one of the sun gear member and the first ring gear member exclusively rotates, the second ring gear member rotates in accordance with the rotation. The sun gear transmits power more reliably without increasing manufacturing cost and without thwarting downsizing of the product.

Abstract: [Object] A unidirectional clutch can reduce a backlash without increasing the number of components, and also can improve silence and durability. [Means of Solving Problem] In a planet gear member 4 including a planet gear 4a which meshes an internal gear 2b of an outer member 2, locking teeth 4b are provided coaxially and integrally relative to the planet gear through a flange 4c. In an inner member 3, U-shaped wall portions 3b receiving the locking teeth 4b are provided. In the U-shaped wall portion, an engaging portion 5 is provided so that teeth of one portion of the locking teeth can engage. A locked state is attained by the locking teeth, so that even if the planet gear receives a restriction of the number of teeth, the number of the teeth (pitch) of the locking teeth can be finely set arbitrarily.

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: The present invention is provided with the inner rocker arm type epicycle wheel system and combined with a one-way transmission to construct the inner rocker arm type epicycle wheel system capable of changing the driven direction of the input shaft while the output rotary direction of a cylindrical output shaft keeps constant, and characterized in that: through the inner rocker arm type epicycle wheel system being combined with the one-way transmission, the inner rocker arm type epicycle wheel system is equipped with a transmission operational function of bidirectional input and unidirectional output, thereby the inner rocker arm type epicycle wheel system with bidirectional input and unidirectional output of the present invention enables the transmission relation between the input shafts driven in two different rotary directions status and the one-way rotation cylindrical output shaft to have the same or different transmission speed ratios, when the input shafts are driven in the first rotary direction and i

Abstract: A power tool including a drive with a drive input motor and a drive input shaft that can be rotated by the drive motor in a forward direction and in a backward direction around a drive input rotational axis, including a driven component with a drive output shaft that can be rotated in a direction of movement, including a planetary gear arranged between the drive input shaft and the drive output shaft, having several planetary gear components that are configured as a sun gear, a planet carrier, a planet wheel and a ring gear wheel, whereby the drive input shaft is non-rotatably coupled to a first planetary gear component, and including a device for switching between a first and a second transmission stage of the planetary gear.

Abstract: For the coaxial epicyclic gear train with bidirectional input and one-way output, by way of the epicyclic gear train and the integrated one-way transmission to constitute the epicyclic gear train, in which the rotary direction driving the input shaft of the gear train with bidirectional input and one-way output is changed, and the rotary direction at the output shaft is constant.

Abstract: A bicycle hub transmission includes a hub axle, a driver, a hub shell, a power transmission mechanism and a shift mechanism. The driver and the hub shell are rotatably supported relative to the hub axle. The power transmission mechanism is disposed between the driver and the hub shell to selectively transmit rotational power from the driver to the hub shell through one a plurality of power transmission paths. The shift mechanism operatively couples the power transmission mechanism to select a power transmission path. The downstream planetary gear unit includes a planetary gear carrier that meshes with planetary gears of the upstream planetary gear unit or with a linking member coupled to the planetary gears of the upstream planetary gear unit. The planetary gear carrier of the downstream planetary gear unit is coupled with a brake unit to transmit a reverse rotational power from the driver to the brake unit.

Abstract: An automatic speed reducing ratio-switching apparatus comprising an input side carrier, an output side carrier, and an intermediate carrier includes first and second planetary gear mechanisms juxtaposed in the axial direction of an input shaft, first and second inner clutch members which are rotatable in one direction while locking rotation in the other direction of the input shaft, and have mutually different locking directions, first and second outer clutch members which are rotatable in one direction while locking rotation in the other direction of the input side or output side ring gear, and have mutually different locking directions, and a viscous resistance member functioning under a static frictional force to integrally rotate the input side or output side sun gear, the input side or output side planet gears, and the input side or output side ring gears respectively in an identical direction.

Abstract: A transfer case comprising a rotational input member, a rotational output member, a rotational planetary gear portion operatingly engaged between the input member and the output member, a moveable cam member selectively engagable with the planetary gear portion, whereby the rotation of the planetary gear portion is stopped when the cam member is engaged with the planetary gear portion, the rotational direction of the output member is in the same direction as the input member when the cam member is not engaged with the planetary gear portion, and the rotational direction of the output member is opposite the rotational direction of the input member when the cam member is engaged with the planetary gear portion.

Abstract: An automatic reduction-ratio changing apparatus comprises a planetary gear mechanism including a sun gear, planet gears, and an internal gear. When a load, which exceeds a predetermined torque, is applied to the internal gear, a pawl of a lock lever is engaged with a ratchet section of a housing to stop the rotation of the internal gear and lock the internal gear. When a displaceable member of an actuator is displaced from an outward route to a homeward route, the rotation of a motor is reversed, and an input shaft and a cam are rotated in a reverse direction to release from the locked state. Accordingly, the speed reduction ratio, which is transmitted from an output shaft to the actuator, is automatically switched.

Abstract: A reversible one-way clutch (90) is positioned in parallel with a friction pack (62, 72) to drive a planetary transmission (10) in low gear and reverse. The clutch (90) has a biasing plate (96) secured to its surface to bias the clutch (90) in a direction so that the transmission (10) operates in either low gear or reverse gear. The biasing plate (96) is hydraulically actuated to bias the clutch (90) between low gear, neutral, and reverse gear.

Abstract: A convertible winch, comprises a basic body, motion transmission and reduction elements for the manual and powered operation, with a mono-direction rotation, and manual or powered operation according to at least two directions, with different rotation speed, and a central hole for the insertion of manual operation elements, the motion transmission and reduction elements providing at least a central gear, a lower gear, and a slidable side gear, coupling, by pawls, with the central gear or with the lower gear, determining the rotation according to different speed in function of the rotation direction of the manual or powered operation elements, the winch further providing, inside the body, an element interacting with the slidable gear, on which an operable button removably acts, inside the insertion central hole of the manual operation elements the interaction element being able to take two positions.

Abstract: A traveling and accelerating system for bicycles includes a frame having a front wheel at a front part and a rear wheel at a rear part thereof; a pair of pedals fixed at both sides of a shaft which is rotatably supported at a boss being fixed under a center of the frame, to be driven by a user's feet; a driving sprocket axially fixed on the shaft for transmitting rotation power via a chain to the rear wheel; a housing attached at one side of the boss to be closed with a cap and having a hollow cross-sectional shape to accommodate accessories; a pinion axially fixed on the shaft beside the driving sprocket in the housing; a first gear member accommodated in the housing and having an inner gear part along its inner diameter; a second gear member movably contacting the first gear member and provided with planetary gears to be engaged with the inner gear part of the first gear, the planetary gears being fixed by pins and rotatable in relation to the pins; a pair of latch means respectively inserted and fixed

Abstract: A reversible one-way clutch (90) is positioned in parallel with a friction pack (62, 72) to drive a planetary transmission (10) in low gear and reverse. The clutch (90) has a biasing plate (96) secured to its surface to bias the clutch (90) in a direction so that the transmission (10) operates in either low gear or reverse gear. The biasing plate (96) is hydraulically actuated to bias the clutch (90) between low gear, neutral, and reverse gear.

Abstract: A single mechanism mounted at the head of a winch has a double-selector function, allowing either 1st or 2nd ratio of drive to a drum to be selected upon initial rotation of the drive shaft. The mechanism is mounted coaxially with the drum and shaft and has coaxial inner and outer control buttons. Its body can be mounted on the end of the drive shaft from above.

Abstract: An apparatus for changing rotation of a pedal shaft for a bicycle is provided, in which forward and rearward driving forces of the pedal shaft are convertible without a load, by indirect coupling, and the bicycle can be pulled rearward under the setting conditions for forward traveling. The apparatus includes: a sprocket housing installed to be freely rotatable centering the pedal shaft, to which a ring gear and a ratchet changing ring having the first one-way stoppers are fixed; a sun gear installed to be integrally rotatable with the pedal shaft; rearward rotation of the carrier can be checked by the first one-way stoppers of the ratchet changing ring; a changing gear ring coupled with the carrier to be elastically rotatable along the circumference with predetermined rotatable angle; a fixing housing having the second one-way stoppers capable of stopping rearward rotation of the carrier; and a stopper changing ring capable of controlling the second one-way stoppers of the fixing housing.

Abstract: An apparatus for changing power direction for a bicycle is provided, which can travel the bicycle forward all the times, and simultaneously idle the bicycle, and transmit the driving force to a pedal shaft, thereby pulling back the bicycle without reverse-load.

Abstract: A bicycle multi-gear hub with a coaster brake includes a hub body, a driver, a planetary gear arrangement and a coaster brake mechanism. The braking effect of the coaster brake mechanism is always boosted in all possible gears by the planetary gear arrangement when the driver is back-pedalled in a braking direction. The planetary gear arrangement can be shifted, if necessary, to always apply braking torque through a ring gear of the planetary gear arrangement, so that the planetary gear arrangement can be in the lowest gear of the multi-gear hub during braking. To shift the planetary gear arrangement into the lowest gear for braking when the planet carrier is connected to the driver for overdrive, a clutch member can be deflected by the planet carrier to disengage the driver from the planet carrier and engage the driver with the ring gear. The portion of the clutch member that engages the planet carrier can be configured independently of the portion of the clutch member that engages the ring gear.

Abstract: A two directional multi-speed shifting sear of middle axle is made of outer ring, bearings ring, starwheel, freewheel screw cup, freewheel plate, core teeth, inner and outer pawls, and chainwheel etc. The chainwheel is fixed on the outer ring through thread or thread hole. The starwheel is geared with inner teeth of the outer ring and the core teeth. The outer pawl is mounted on pawl hub, the later is fixed on the bottom bracket case of the cycle frame. The middle axle is passed through and fixed with the freewheel plate, the core teeth and the right crank, and then inserted into the bottom bracket case. With such a shifting gear, a pedal cycle may be given a unique function that when the cycle is moving forward, the changing of it's moving speed in the very moving direction may be in-situ realized by variating the shifting gear through pedalling to enable the crank to be rotating in either positive or inversive directions.

Abstract: A differential motion gear system to control the output speed ratio by changing the input direction. The gear system utilizes a planetary gearset to achieve the desired results. The input shaft may be directly connected to the sungear, the differential motion gear set, or to the ring gear. One or more one-way drive mechanisms are connected between a stationary case and one or more of the planetary gearset elements and between the planetary gearset elements and the output shaft. Selective braking of the planetary gearset elements, in conjunction with the change of direction of the input shaft causes the output shaft to rotate in a single direction, but at different output speeds.

Abstract: A volumetric feeder having a reversible motor, in which the feed screw is driven at a first speed when the motor rotates clockwise, and is driven at a second speed when the motor rotates counterclockwise. The feeder includes a first one-way clutch, having a driven inner race and an outer race which rotates freely counterclockwise relative to the inner race when the inner race is driven clockwise. The outer race of the first one-way clutch rotates with the inner race when the inner race is driven counterclockwise. A second one-way clutch has a driven outer race and an inner race which rotates freely clockwise relative to the outer race of the second one-way clutch when the outer race of the second one-way clutch is driven counterclockwise. The inner race of the second one-way clutch rotates with the outer race of the second one-way clutch when the outer race of the second one-way clutch is driven clockwise. The motor shaft is attached to the inner race of the first one-way clutch.