Abstract: A cage of a ball bearing includes an annular portion located on a first axial side with respect to balls, the first axial side being one side in an axial direction of the ball bearing, and cage bars extending from the annular portion toward a second axial side, the second axial side being the other side in the axial direction of the ball bearing. A space located on a second axial side of the annular portion and defined between any two of the cage bars adjacent to each other in a circumferential direction serves as a pocket that accommodates a corresponding one of the balls. The pocket has a contact surface that is brought into point contact with the ball at an intersection point between a rotational center axis of the ball and a surface of the ball when the cage is displaced toward the second axial side.

Abstract: An annular groove is provided in a driving-side rotor of a clutch. Guide grooves are provided on a driven-side rotor of the clutch. By moving the driving-side rotor relative to the driven-side rotor, balls are moved that are accommodated in the spaces provided by the sections where the guide grooves and the annular groove face each other. Moving the balls toward the sections where the gap between the driving-side rotor and the driven-side rotor is narrow causes the balls to engage with the driving-side rotor and the driven-side rotor to achieve an engaged state. A disengaged state, in which engagement is cancelled, is achieved by moving the balls to the sections where the gap is wide.

Abstract: A roller lock device has a shaft and a housing configured over the shaft for selective relative movement thereto. A plurality of rollers is configured between the housing and the shaft, at least some of which are substantially conically shaped. A cage is configured between the housing and the shaft and adjacent the rollers such that the rollers are at least partially constrained from movement by the cage. A control is configured to move the rollers axially thereby engaging and disengaging the roller lock. The housing has ramps configured to receive the rollers, the ramps having a curved contour.

Abstract: A rotation transmission device includes a two-way clutch which is selectively engaged and disengaged by an electromagnetic clutch. The two-way clutch includes a control retainer and a rotary retainer. The control retainer and the rotary retainer have flanges and bars formed on outer peripheral portions of the respective flanges and arranged so as to circumferentially alternate with each other with pockets defined between adjacent bars. Two rollers are received in each pocket. When the control retainer and the rotary retainer are rotated relative to each other, the rollers are adapted to be pushed by the bars to the disengaged position. An anti-rotation arrangement is provided on opposed surfaces of an outer ring and the control retainer member. The anti-rotation arrangement is adapted to prevent the control retainer from rotating relative to the outer ring while the rollers are in engagement, thereby preventing the rollers from moving to the neutral position.

Abstract: A rotation transmission device includes a control retainer and a rotary retainer having bars arranged circumferentially alternating with each other such that pockets are defined between the adjacent pairs of bars. A pair of rollers are mounted in each pocket with an elastic member disposed between the pair of rollers such that the pair of rollers are pushed by the respective bars to their respective disengaged positions when the control retainer and the rotary retainer rotate relative to each other. A spring holder is fitted on an input shaft while abutting one axial end surface of an inner ring. The spring holder has spring support pieces on the outer periphery thereof to prevent radially outward movement of the elastic members. The spring support pieces are plate-shaped members disposed radially outwardly of the elastic members to extend in the axial direction in parallel to the outer periphery of the inner ring.

Abstract: In a roller type one-way clutch comprising: an outer race; an inner race that is apart from the outer race on an inner diameter side in a radial direction and concentrically arranged to allow its relative rotation; a plurality of rollers that are arranged between the outer race and the inner race and transmit a torque between the outer race and the inner race; and a plurality of block bearings that are arranged between the rollers and between the outer race and the inner race, the roller type one-way clutch is characterized in that a curvature in a circumferential direction of a bearing surface of the block bearing facing an outer peripheral surface of the inner race is higher than a curvature in the circumferential direction of the outer peripheral surface of the inner race.

Abstract: In at least one illustrative embodiment, a clutch may comprise an outer race, an inner race, and an engagement assembly disposed in a space located radially between the outer and inner races. The engagement assembly may comprise a plurality of locking members and a biasing shoe frictionally engaged with one of the outer race and the inner race. The locking members may be configured to move with the biasing shoe within the space between an unlocked position, in which the locking members are free to move relative to the outer race and to the inner race, and a locked position, in which the locking members are wedged between the outer and inner races to couple the outer and inner races for rotation together.

Abstract: A hub assembly includes a hub with an axle extending axially therethrough. A socket has an open end in a first end thereof which is inserted into the space of the hub. A driving unit includes a sleeve, two ratchet rings, two roller members and two resilient members. The first and second ratchet rings are engaged with each other by teeth on the two respective end faces thereof. The first and second ratchet rings are mounted to the sleeve. The two roller members are respectively located in the two ratchet rings. The two resilient members are mounted to two ends of the sleeve respectively and located outside of the first and second ratchet rings. The driving unit is located in the space and the axle extends through the driving unit which is an integral single part. The driving device operates smoothly and has less noise.

Abstract: The present invention relates to a freewheel (4) having an inner ring (38), an outer ring (40) and at least one wedging element (48) between the inner ring (38) and the outer ring (40), which can be moved from a wedging position, in which the wedging element (48) prevents rotation of the outer ring (40) relative to the inner ring (38) in a first circumferential direction (24), into a release position, in which the outer ring (40) can be rotated in an opposite, second circumferential direction (26) relative to the inner ring (38), wherein the wedging element (48) is preloaded into the wedging position by means of a spring element (64). The spring element (64) has an elongate spring body (66), which extends in a radial plane and has a corrugated profile in the radial direction (20, 22). The present invention furthermore relates to a freewheel arrangement (2) having a freewheel (4) of this kind.

Abstract: A rotation transmission device with a built-in one-way clutch having an inside rotational member, an outside rotational member disposed concentrically with the inside rotational member is proposed. The device includes a one-way clutch that is radially disposed in an annular space defined between the inside rotational member and the outside rotational member, and at least one bearing disposed in the said annular space. The outside rotational member is made in a plastic material and is overmoulded onto at least one stiffening insert.

Abstract: One way clutch has an inner ring, an outer ring and torque transmission members between them. Each torque transmission member can shift between a torque transmission position and a non torque transmission position. Biasing members bias the torque transmission members respectively toward the torque transmission positions. A retainer includes first and second mount portions that retain the torque transmission members and the biasing members corresponding thereto. Each of the mount portions has a securing portion that secures one end of the biasing member, and the torque transmission member is pressed by the other end of the biasing member. The biasing force that the biasing members retained by the second mount portions exert on the torque transmission members corresponding thereto is larger than the biasing force that the biasing members retained by the first mount portions exert on the torque transmission members corresponding thereto.

Abstract: An apparatus for adjusting the height of a vehicle seat. The apparatus includes an input shaft for inputting a torque by using a lever installed at one side of the seat; an output member connected to a link means to output the torque for adjusting the height of the seat; a clutch drum interposed between the input shaft and the output member on a torque transfer path; a torque transfer unit comprising a plurality of neighboring engagers wherein the engagers disposed at two ends of the torque transfer unit are spaced apart from each other, and wedge-combined between the input shaft and the clutch drum to transfer the torque; and an elastic member for providing an elastic restoration force for moving the torque transfer unit to its initial position. According to the present invention, since a conventional retainer may be omitted, backlash caused by a retaining clearance and an operation clearance may be prevented and thus an operational efficiency may be increased.

Abstract: The present invention relates to a mechanical system with a one-way clutch, for example a pulley for a motor vehicle alternator, comprising a first element and a second element which are able to move one with respect to the other in rotation about a central axis and delimit an annular housing radially to the central axis, a one-way clutch device arranged in the annular housing, and at least one rolling bearing arranged in the annular housing. The mechanical system is characterized in that the rolling bearing is an angular-contact bearing and comprises at least one pressed ring comprising means of attachment of the rolling bearing to the first element or the second element. The invention also relates to an alternator comprising such a mechanical system configured as a pulley with a one-way clutch.

Abstract: The present invention relates to a mechanical system with a one-way clutch, for example a pulley for a motor vehicle alternator, comprising a first element and a second element which are able to move one with respect to the other in rotation about a central axis and delimit an annular housing radially to the central axis, a one-way clutch device arranged in the annular housing, and at least one rolling bearing arranged in the annular housing. The mechanical system is characterized in that the rolling bearing is an angular-contact bearing and comprises at least one pressed ring comprising means of attachment of the rolling bearing to the first element or the second element. The invention also relates to an alternator comprising such a mechanical system configured as a pulley with a one-way clutch.

Abstract: The present invention relates to a mechanical system with a one-way clutch, for example a pulley for a motor vehicle alternator, comprising a first element and a second element which are able to move one with respect to the other in rotation about a central axis and delimit an annular housing radially to the central axis, a one-way clutch device arranged in the annular housing, and at least one rolling bearing arranged in the annular housing. The mechanical system is characterized in that the rolling bearing comprises at least one pressed ring distinct from the constituent elements of the one-way clutch device. The invention also relates to an alternator comprising such a mechanical system configured as a pulley with a one-way clutch.

Abstract: A clamping roller freewheel for an adjusting device in a motor vehicle includes a cylindrical outer surface, at least one roller pair, an output shaft, a clamping element which is rotationally connected to the output shaft and which has at least one clamping slope on an opposite side of the roller pair to the cylindrical outer surface, and a spacer device which is at least partially between the rollers and has elastic properties. This spacer device includes a spacer piece and a spring. When the spacer piece is in the normal position, an oblique surface bears against a roller. The spring presses the spacer piece into the normal position in which it exerts, a force on at least one roller. When passing from the normal position to the retracted position, the oblique surface is moved away from the roller.

Abstract: An oil supply apparatus for a vehicle may include an oil pump, a first rotary member provided to the oil pump such that the oil pump may be rotatably operated by the first rotary member, a second rotary member restricted from rotating with respect to the first rotary member in a first direction, the second rotary member being allowed to rotate with respect to the first rotary member in a second direction opposite to the first direction, and a third rotary member allowed to rotate in the first direction with respect to the first rotary member, the third rotary member being restricted from rotating with respect to the first rotary member in the second direction opposite to the first direction, wherein the second rotary member and the third rotary member may be respectively connected to power sources providing drive forces in directions opposite to each other.

Abstract: A bearing type overrunning clutch includes an outer ring (1) and an inner star wheel (2). A plurality of rollers (3) are provided between the outer ring (1) and the inner star wheel (2). A plurality of concave grooves are provided on the outer cylindrical surface of the inner star wheel (2), each of which corresponds to one roller (3) respectively. The clearance between the adjacent rollers (3) is 0 to 0.2 mm. The main characteristic of the invention is to ensure the clearance between the adjacent rollers (3) to be in the range of 0 to 2 mm by increasing the number of rollers in a same space; at the same time, to increase the contact strength by providing the plurality of concave grooves on the outer cylindrical surface of the inner star wheel (2). The invention has advantages of reasonable structure design, simple manufacturing process, high manufacturing accuracy and strong working reliability, etc.

Abstract: A starter motor includes an electric motor, a drive shaft driven by the motor and an inertia drive pinion which includes a driver in threaded engagement with the drive shaft, a pinion shaft rotatably sleeved on the drive shaft, an output pinion being able to rotate with the pinion shaft, and a one way clutch. At least one elastic member is arranged between the output pinion and the pinion shaft in the axial direction to resiliently support the output pinion to move along the pinion shaft. A one way clutch especially suitable for the starter motor was also disclosed.