Abstract: A shift mechanism for an automatic transmission includes a frictional engagement element arranged between the case of the automatic transmission and one element of a planetary gear unit and a hydraulic servo unit for engaging the frictional engagement element. A one-way clutch is connected to that same one element of the planetary gear unit for selectively locking it to the case. The one-way clutch is axially spaced from the frictional engagement element with the hydraulic servo unit therebetween. Further, the one-way clutch has its outer race connected to the case and its inner race connected to the aforementioned element of the planetary gear unit through a connection member axially extending along the inner circumferential side of the hydraulic servo unit. The inner race is formed with a radial lubricating oil passage in fluid communication with an oil passage in a transmission shaft.

Abstract: A starter having a highly reliable overrunning clutch which has grooves on both a clutch member inner and a clutch outer member. Rollers are sandwiched from the front and rear torque conveyance direction by the roller contact surface of each groove, so a large stress such as with the roller-type overrunning clutch using the wedge-effect is not applied on each contact surface and roller contact surface. This reduces the inertia of the clutch, and suppresses the impact force generated when a pinion engages an engine ring gear.

Abstract: A starter with an improved overrunning clutch for automotive use. The overrunning clutch has a clutch outer integrally formed with an internal gear of a planetary gear speed reduction mechanism driven by a starter motor, a clutch inner integrally formed with a center bracket which supports a drive shaft rotatably therethrough and rollers interposed between cylindrical portions of the clutch outer and the clutch inner. On the inner circumference of the clutch outer, roller storage portion is formed to extend radially circumferentially so that the roller is fully stored therein at the time of overrunning.

Abstract: A starter includes a housing having a water barrier wall, a drive shaft disposed in the housing, and pinion gear having a flange portion. The water barrier wall comes into contact with the flange portion when the starter is in operation. The pinion gear is adapted to engage with a ring gear of an engine, which the starter starts. The pinion gear contacts the drive shaft through a sliding portion. The structure of the starter prevents water, dust, dirt and other contaminants from leaking into the housing via a window in the housing. Thus, the function and operability of the starter is improved.

Abstract: A final drive for a multi-speed power transmission has freewheeler timed up and down forward power shifts utilizing two planetary gear sets connected between the transmission and differential. For low ratio a smaller diameter sun gear of a first gear set is driven through a freewheeler with the associated ring gear held for reaction so that the pinion carrier assembly drives the differential at a low ratio. For high ratio, a larger diameter sun gear of a second gear set is directly driven while a high-reverse clutch holds the associated ring gear for reaction. The pinion carrier assembly common to both gear sets drives the differential at a higher speed ratio as the freewheeler overruns on torque reversal. The ring gear of the second gear set of one embodiment has a path to ground through an additional freewheeler for coast control. The outer race of the low-ratio freewheeler has external teeth to park-lock the associated sun gear through a grounded parking pawl.

Abstract: A gear transmission apparatus comprises a planetary gear mechanism having an internal gear, a plurality of pinion gears, a pinion carrier, and a sun gear. The pinion carrier has an overhang portion extending along an outer periphery of the internal gear. A bearing or bush is provided to support the overhang portion. A band brake is provided for braking the pinion carrier when brought into frictional contact with the overhang portion. A one-way clutch is interposed between the rotation input shaft and the rotation output shaft so as to allow rotation of the rotation output shaft in a speed-increase direction. In a preferred embodiment, either the sun gear or the internal gear is braked by the band brake.

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: A multi-directional planetary transmission mechanism adapted to establish plural torque flow paths between a driving member and a driven member including a one-way torque delivery clutch located in the torque flow path from the torque input element of the planetary gear system and a torque output shaft, and a friction brake means for anchoring the torque input element of the planetary gearing to establish a change in torque ratio wherein provision is made for disengaging the one-way clutch to interrupt torque delivery therethrough in either a driving direction or a coast direction and simultaneously anchoring said torque input element of said gearing to provide a torque reaction point.

Abstract: In a starter unit, the internal gear frame of an epicycle reduction gear is set rotatable with respect to the front bracket, and a first over-running clutch is made up of a clutch outer fixed to the front bracket, and a clutch inner which is the front end portion of the internal gear frame, and a second over-running clutch which is a conventional over-running clutch is mounted on the output shaft. The provision of the two over-running clutches eliminates the difficulty that, when the start switch is turned on during the inertial rotation of the engine or starter unit, the pinion is reengaged with the ring gear, so that abnormal shock is applied to the side of the starter unit to damage the rotation transmitting members.

Abstract: A miniature reduction gear includes a sun gear, a fixed inner gear and a movable inner gear and at least one planetary gear. The planetary gear is formed of three stages of outer teeth. Each outer tooth stage separately engages one of a sun gear, fixed inner gear and movable inner gear. The sun gear provides an input to the miniature reduction gear and the movable inner gear provides an output. The number of teeth of the planetary gear which engage with the sun gear is greater than the number of teeth which engage with either of the fixed inner gear or movable inner gear.

Abstract: Disclosed is a two-way-driven 3-speed free wheel which provides a multi-gear-changing mechanism for use with various kinds of pedal cycles. The disclosed device has four kinds of catches: pawl, hook-pawl, backward pawl and forward pawl. The backward and forward pawls respectively are hinged on the opposed sides of a sprocket wheel by small spindles mounted on the opposed sides of the sprocket wheel. On one side of the sprocket wheel are the backward pawls and an outer ring; on the other side are forward pawls, a ratchet cone and a bearing collar. Between the outer ring and a central gear are two or more planet pinions. As compared with prior art structures, this invention has the following advantages: the structure is simple, the cost is lower, and it is facile to operate and to change speed. Also disclosed are one-way-driven 2-speed free wheels and two-way-driven 2-speed free wheels, using two or three kinds of catches, of the above-described four kinds of catches.

Abstract: A rotation transmission device with a torque limiting function comprises a cylindrical housing 10, a first rotation member 20 supported on a first bracket 12 via a one-way clutch bearing 14, a second rotation member 30 integral with the output shaft 33, an annular torsional resilient member 80, and an input shaft 40 rotatably supported on the rotation members 20 and 30. The torque is transmitted from the input shaft to the first rotation member via a torque limiting transmission mechanism which comprises: a first and a second internal gear 21 and 31, a first sun gear 41 supported on the input shaft 40 via a one-way clutch bearing 42, a second sun gear 43 fixed on the input shaft, first and second planetary gears 55 and 65, satellite rings 58 and 68 eccentric to the planetary gears 55, and a guide disk 70 having guide slots 72 slidably engaging with the satellite rings 58 and 68.

Abstract: A ring gear and an outer race of a one-way clutch are linked and secured in the axial direction. The outer peripheral section of a disk-shaped supporting member engages teeth of the ring gear and supports the ring gear, and a tapered snap ring is mounted in an indented groove with a tapered surface formed in the ring gear so that the side surface of the outer peripheral section of the support member is in intimate contact with the end surface of the outer race, and the support member is thus secured and prevented from withdrawing. An oil sump for lubricant supplied from the inner radial side is formed on the inner peripheral part of the outer race defined by the intimately contacted outer race and the support member. The ring gear of the planetary gear unit rotates when the automatic transmission actuates, and the integral support member also rotates based on the rotation of the ring gear.