Abstract: Drive transmission part and system including a columnar male part to be engaged with a twisted triangular female part to allow rotation of a part of an image forming apparatus. The columnar male part can include one or more projections of circular or elliptical cross section, arranged in a triangular pattern, or centrally located. The columnar part can also include a threaded surface to engage the female part. An intermediary part can also be provided to connect a ratchet type of part to the female part.

Abstract: An electromagnetic system for controlling the operating mode of an overrunning coupling assembly is provided. A control member is mounted for controlled shifting movement between coupling faces of coupling members and a stator structure including at least one electromagnetic source to create a magnetic force when energized. A magnetic or ferromagnetic translator structure is coupled to the control member for selective, small displacement, control member movement. The translator structure is magnetically coupled to the stator structure across an air gap and is supported for translational movement relative to the stator structure along a path between first and second stable end positions. The translator structure completes a path of magnetic flux to magnetically latch in at least one of the end positions and to translate along the path between the end positions upon experiencing a net translational force.

Abstract: A pipe inspection system may include a cable storage drum and a length of resilient flexible push-cable. An asymmetric bearing device supports the cable storage drum for rotation about the rotational axis in a pay-out direction and an opposite pay-in direction. In one embodiment, the asymmetric bearing device automatically decreases, without the for manual adjustment, an amount of friction exerted against rotation of the cable storage drum upon reversal of the direction of rotation of the cable storage drum from the pay-out direction to the pay-in direction.

Abstract: A one-way clutch, including: a housing including a top side and a plurality of indentations in the housing, each indentation including: a respective opening in a portion of the top side; a respective bottom wall opposite the respective opening in an axial direction parallel to an axis of rotation for the one-way clutch; and a respective side wall. The respective side wall: connects the respective opening and the respective bottom wall and tapers inward from the respective opening to the respective bottom wall. The clutch includes a plurality of struts, each strut including a first segment disposed in a respective indentation and including a respective side surface substantially parallel to the respective side wall. Each strut is pivotable in the respective indentation to enable rotation of the housing in a first rotational direction and to block rotation of the housing in a second rotational direction, opposite the first rotational direction.

Abstract: A controllable clutch (18) for a belt tensioner (16) comprises a drive member (32), a driven element (24) and a clutch pawl (40) that is movably supported on the input side (30) between a home position and an engaged position and in the engaged position couples the drive member (32) to the driven element (24), wherein the clutch pawl (40) is tension-loaded in the engaged position.

Abstract: A hybrid overrunning clutch includes a metal outer race and a composite outer ring that are each sized and configured such that the metal race generates a preload on the composite outer race throughout the operational temperature of the clutch. The composite outer ring significantly reduces that total weight of the clutch, as compared to a completely metal outer race. The present application further includes a method of assembling the metal outer race and composite outer ring so that thermal expansion of the metal outer race creates the preload in the composite outer ring. The present application also includes a method of designing a hybrid overrunning clutch.

Abstract: A switchable free-wheel arrangement for a CVT transmission of a motor vehicle. Clamping bodies held in a cage are disposed between an outer ring and an inner ring. Each clamping body can be pressed with a relatively high force against the inner ring by an energy accumulator. The clamping bodies can be set up in the release direction or in the clamping direction by a switching mechanism. The energy accumulator generates a relative small setup force for setting up the clamping bodies. The energy accumulator includes two torsion springs disposed on the clamping body. It can, however, also have the shape of a helical spring that surrounds the clamping bodies and engages therein in special helical spring grooves.

Abstract: A free-wheel cage ring, having two annular flanged disks that extend radially and are connected to each other to form an axial intermediate space and have clamping bodies therebetween pivotally arranged in the cage ring and are biased for coupling by a spring, the clamping bodies perform, due to centrifugal force, a pivoting motion for decoupling against the spring force, and at least two guide surfaces are allocated to each clamping body in its axial extent, that engage opposite end peripheral regions of the clamping body, guide them at least in the peripheral direction, and have a break through which the clamping bodies extend to a radially inner clamping surface. The axial length of the clamping body radially inner clamping surface is equal to the total length of the clamping body. The guide surfaces are each formed integrally by recesses on opposite end faces of the flanged disks.

Abstract: A modified sprag clutch, which can freewheel in both directions until its locking function is employed at which time it will lock in one direction and freewheel in the other, or lock in both directions depending on the placement of the sprag elements, is described. Among other applications, the present modified sprag clutch permits conventional clutch packs and sprag clutches currently employed in automotive transmissions to be retrofitted to eliminate the high-wear friction discs, and to replace conventional one-way sprag clutches. Transmissions may also be designed with the present modified sprag clutches as original equipment.

Abstract: A one-way clutch, including: an outer race including a pocket and a strut. The strut includes a body and a retention segment. The body is at least partially locatable in the pocket. The retention segment includes a neck portion and a spring retention portion. The neck portion is directly connected to the body and extends from the body in a first direction. The spring retention portion extends from the neck portion in the first direction and includes first and second segments extending in second and third opposite directions, orthogonal to the first direction, from the neck portion.

Abstract: A compelling-type radial clutch device includes a V-shaped bendable joint structure installed between an active rotary part and a passive rotary part and driven by the active rotary part The V-shaped joint structure includes a joint axial core connecting an active arm of V-shaped joint structure and a compelling arm of the V-shaped joint structure, and an outward-expanding spring installed between the two arms, so that a prestressed outward-expanding bias force between the two arms causes angular displacement of the compelling arm by causing the angle between the two arms to increase, one end of the active arm of the V-shaped joint structure being connected and fastened on the active rotary part; and the other end of the compelling arm of the V-shaped joint structure being installed with a compression head or roller arranged to engage an inner notch in the passive rotary part.

Abstract: A coupling comprises a pair of clutch end members, a clutch centre member disposed between the clutch end members, and an actuator coupled to one of the end members. Each end member includes concentric V-grooves disposed on a respective face thereof. The centre member is axially movable between the end members, and includes a pair of opposing surfaces. One of the opposing surfaces includes concentric V-grooves configured to mesh with the V-grooves of one of the end members. Another of the opposing surfaces includes concentric V-grooves configured to mesh with the V-grooves of another of the end members. The actuator is configured to couple the end members and the centre member together by urging the V-grooves of the end members into engagement with the V-grooves of the centre member.

Abstract: A bicycle hub assembly includes a hub with an axle extending therethrough. A socket is connected to the hub and has a base connected thereto. The base has multiple pawl recesses and each pawl recess has two receiving portions. A ratchet unit has multiple pawls, multiple resilient members and a toothed ring. The pawls each have a first protrusion and a second protrusion respectively extending from one end thereof. A restriction slot is defined in one side of the pawl. The two ends of the resilient member are respectively received in the two ends of the pawl recess. Each resilient member has a curved contact portion which contacts the restriction slot. The toothed ring is located in the hub and the pawls are engaged with the toothed ring. When the first protrusion is worn out, the second protrusion is engaged with the ratchet teeth and the hub assembly works normally.

Abstract: A one-way clutch, including an inner race and a wedge component with first and second tapered outer partially circumferential surfaces. The clutch includes first and second outer races including respective tapered inner partially circumferential surfaces. For rotation of the outer races, with respect to the inner race, in a first direction, the outer races are axially aligned and separated by a space in an axial direction, the first and second tapered outer partially circumferential surfaces and the respective tapered inner partially circumferential surfaces are at least partially aligned in radial and axial directions and are free of contact. For rotation of the outer races, with respect to the inner race, in a second direction, opposite the first direction, the first and second tapered outer partially circumferential surfaces contact the respective tapered inner partially circumferential surfaces and the first and second outer races are non-rotatably connected to the inner race.

Abstract: A clutch module which includes a first rotating member including at least one strut actuation module and a second engaged member including cam surfaces thereon for engagement by said strut actuation module. The strut actuation module includes a frame with a strut pivotally movable with respect to the frame. The strut includes an engagement end and a base end including a first side and a second side thereof. A pin or post portion extends from the frame and has an insulated bobbin with an energizable coil surrounding the bobbin. A U-shaped member including a pair of actuation legs is attached to the pin member and forms a magnetic gap between the base end of the strut and peripheral ends of the legs, such that when the coil is energized the peripheral ends of the legs are polarized in a first polarity and the frame and the strut are polarized with an opposite polarity thereby biasing the strut toward the peripheral ends and pivoting the actuation end into engagement with a cam surface of the engagement member.

Abstract: This mechanical system with one-way clutch, such as a motor vehicle alternator pulley, provides an outer first ring and an inner second ring able to move relative to one another in rotation about a central axis and delimit between them, radially with respect to this central axis, an annular housing. A free-wheel mechanism having members arranged in the annular housing. At least one rolling bearing providing rollers arranged in the annular housing. The first and second rings are common to the free-wheel mechanism and to the rolling bearing. The members of the free-wheel mechanism are cams in contact with a first race formed by the first ring and a second race formed by the second ring. The first and second races are circular, centred on the axis of rotation and have no ramp. An alternator may comprise such a mechanical system configured as a pulley with a one-way clutch.

Abstract: Disclosed is an intermittent bi-directional driving mechanism, which transmits rotating power in forward and reverse directions through a bi-directional driving wheel (4); during the start process after the rotating direction is changed, there is an intermittent pause for a driven wheel (5), during which period the actions of other parts can be completed. By utilizing the function of the intermittent pause of the bi-directional driving mechanism, a device for preventing reverse motion during a start from an uphill slope is provided herein. When a vehicle is moving in one of the four slope-driving states of forward on an uphill slope, forward on a downhill slope, reverse on an uphill slope, and reverse on a downhill slope, the device for preventing reverse motion gives the vehicle a reverse braking function when moving forward on an uphill slope, so that an anti-reverse motion vehicle is provided.

Abstract: An internal combustion engine has a one-way clutch including a ring gear connected to the output shaft of a starting motor, an outer race member connected to a crankshaft, and a claw piece arranged between the outer circumferential surface of the ring gear and the inner circumferential surface of the outer race member facing the outer circumferential surface of the ring gear. The ring gear and the outer race member have a threaded hole and a through hole, respectively, to receive a jig for fixing the ring gear and the outer race member to each other.

Abstract: The pivot control mechanism that selectively controls the rotation of the pivot control shaft by an electric impulse from the solenoid, which locks the pawl into the ratchet, thereby permitting the shaft to rotate in a selected direction. When a passage direction is chosen, the cam followers move out of the home position of the lofted ratchet over the peak position to the next home position. The guiding pins controlling the axial motion of the lofted ratchet in conjunction with the compression springs secure the cam followers in the home position. The shock absorber acting on the cam is used to prevent the turnstile from over rotating with any great amount of force, hence softening the return of the cam followers to the home position. The micro switch is activated, sending a signal to the control board, which through the action of the solenoid, locks the pawls into the ratchet.

Abstract: An electric hub unit includes a hub composed of first casing and a second casing. An electric unit is located between the first and second casings. An axle extends through two respective centers of the first and second casings. The first casing has a reception recess defined in one side thereof. A first extension and a second extension extend axially from the first casing and toward in opposite directions. A bearing is located in the inside of the second extension. A socket unit has a tubular portion and a ratchet unit is connected to the socket unit. The socket unit is mounted to outside of the first casing, and a bearing and a plate are located between the tubular portion and the first extension. The hub unit prevents water and foreign objects from entering into the hub.

Abstract: A one-way clutch, including: a plurality of first ramps with respective first face surfaces orthogonal to an axis of rotation or forming a first acute angle with the first line. The clutch includes at least one wedge plate including a smooth second outer circumference and a first inner circumference with a plurality of second ramps with respective second face surfaces orthogonal to the axis of rotation in the radial direction or forming a second acute angle with the second line. The clutch includes an outer race including a second inner circumference. The outer race is rotatable with respect to the inner race in a circumferential direction. For relative rotation of the outer race in the direction, at least one, but not all, first face surfaces is in contact with second face surface. Rotation of the outer race in an opposite circumferential direction locks the inner and outer races.

Abstract: A one-way clutch, including: an inner race including a first outer circumference with a first plurality of ramps and at least one wedge plate including: a first inner circumference with a second plurality of ramps; a second outer circumference; and a first plurality of slots: passing through material forming the at least one wedge plate in an axial direction; including respective first ends open to the second outer circumference; and including respective second ends radially outward of the first inner circumference and enclosed by the at least one wedge plate. The one-way clutch includes an outer race including a second inner circumference. The outer race is able to rotate with respect to the inner race in a first circumferential direction. Rotation of the outer race in a second circumferential direction, opposite the first circumferential direction, causes the rotation of the outer race to lock to rotation of the inner race.

Abstract: A wrench ratchet mechanism includes a driven member, a housing defining a chamber in which the driven member is at least partially received, a plurality of drive transmitting members disposed in respective recesses between the driven member and housing to transmit a drive force between the housing and driven member and a force applying member extending at least partially around the driven member. The force applying member is movable in a circumferential direction thereof to apply a circumferentially directed force to the drive transmitting members to move the drive transmitting members in the recesses from a non-drive transmitting position towards a drive transmitting position.

Abstract: A driving structure for a wheel hub of a bicycle includes a wheel hub having a ratchet wheel, a ratchet base having an operating member and connected to the wheel hub, an engaging block and an elastic member both assembled onto the operating member, the elastic member abutting against the engaging block so that the engaging block is engaged with the ratchet wheel, a rotating ring assembled between the ratchet wheel and the operating member and having a plurality of abutting plates, each abutting plate abutting against the corresponding engaging block, an elastomer defined on the operating member and abutting against the rotating ring. Under this arrangement, the ratchet wheel simultaneously engages with the engaging blocks, because of the rotating ring and the elastomer.

Abstract: Assemblies for selectively coupling torque between rotating components and belt drive systems including the same are disclosed. The assembly includes a rotatable input member and a rotatable output member operatively connected to one another by a one-way clutch for rotation together in a predominant direction. A spring is included in the assembly with a first end thereof engaged to the one-way clutch and a second end thereof engaged to the rotatable input member. The spring has no preload in an unengaged position of the one-way clutch and rotates with the rotatable input member during a positive torque condition to rotate a component of the one-way clutch to activate the one-way clutch into an engaged position. Then, when the one-way clutch is in the engaged position, the spring radially expands and thereby provides isolation between the rotatable input member and the rotatable output member.

Abstract: A drive device includes a first one-way coupling including a cam plate, pocket plate and struts, a second one-way coupling including a second cam plate driveably connected to the pocket plate, second pocket plate extending in a partial 5 circular arc and secured to the cam plate, and second struts for opening and closing a drive connection between said second plates, and electromagnets for causing the second struts to close said drive connection.

Abstract: The invention provides a power transmission device in which the switching mechanism and control operation can be simplified. Different directions are established for the relative rotation in which the first sprag engages the inner race and the outer race, and the relative rotation in which the second sprag engages the inner and outer races, whereby the inner retainer and the outer retainer are caused to move relative to each other about an axial center O by a load imparting device, and either the first sprag or the second sprag can be made to engage the inner race and the outer race. The combined retention of the first sprag and the second sprag by the inner retainer and the outer retainer actuates the load imparting device to allow the power transmission direction to be switched all at once, resulting in a simpler switching mechanism and control operation.

Abstract: An overrunning clutch is provided having inner and outer members disposed about a rotational axis with the outer member radially outward of the inner member. The clutch further includes a plurality of pins projecting from one of a radially inner surface of the outer member and a radially outer surface of the inner member. The clutch further includes one or more pawls coupled to one of the inner and outer members. Each of the pawls is movable between an engagement position wherein the pawl is engaged with one of the pins to transmit torque between the inner and outer members and a disengagement position wherein the pawl is disengaged from the pin to permit relative rotation of the inner and outer members. In one embodiment, different pawls assume their respective engagement position depending on the rotational direction of the one member.

Abstract: The invention relates to a freewheel insert element and a freewheel comprising a freewheel insert element, wherein the freewheel insert element comprises a plurality of clamping bodies (1, 11), each clamping body (1, 11) having an outer contact surface (1a, 11a) for forming a frictional contact with an outer clamping track (3) and an inner contact surface (1b, 11b) for forming a frictional contact with an inner clamping track (4), and a plurality of intermediate elements (2, 2a, 2b) are provided which have a higher elasticity than the clamping bodies (1, 11) and are arranged between adjacent clamping bodies (1, 11).

Abstract: An internal combustion engine has a one-way clutch including a ring gear connected to the output shaft of a starting motor, an outer race member connected to a crankshaft, and a claw piece arranged between the outer circumferential surface of the ring gear and the inner circumferential surface of the outer race member facing the outer circumferential surface of the ring gear. The ring gear and the outer race member have a threaded hole and a through hole, respectively, to receive a jig for fixing the ring gear and the outer race member to each other.

Abstract: A ratchet braking structure, designed to solve the problem that a conventional braking pawl cannot resume its actuating position without a torsion spring, includes a ratchet wheel and a pair of pawls provided on two opposite sides of the ratchet wheel respectively. Each pawl has a center of rotation and two opposing end portions symmetrically provided with respect thereto, wherein the two end portions are an engaging end for engaging with and thereby locking the teeth of the ratchet wheel and a balancing end for enabling pawl position restoration. The engaging end of one pawl is diagonally opposite that of the other. The balancing end of each pawl extends from the side opposite the engaging end and can be pushed outward by the teeth of the ratchet wheel so that, even without additional position restoration means, the engaging end will stay where it can engage with the ratchet wheel.

Abstract: A ratchet assembly for a load binder includes a pawl bearing assembly biased between a surface of the pawl and a biased movable element whose movement is actuated by the insertion or withdrawal of the lever. In one position of the movable element, the bearing assembly is urged against the pawl to lock it. In the other position of the movable element, the bearing assembly is allowed to reduce its pressure on the pawl.

Abstract: A clutch is provided that includes an inner race and an outer race that moves relative to the inner race. A pedestal is also provided and the position of the pedestal is fixed with respect to at least one of the inner race or the outer race. A bearing block is also included that engages the pedestal. In some versions of the clutch the bearing block may be made out of plastic or bronze.

Abstract: A gear clutch assembly and an electronic device are provided. The gear clutch assembly comprises a pivot, a driving gear engaged with the pivot and adapted to rotate along the pivot, and a driven gear disposed on the driving gear. The driving gear comprises a first surface, a ratchet integrally formed with the driving gear comprising a plurality of teeth disposed on the first surface. The driving gear comprises a second surface facing the first surface, and a pawl integrally formed with the driven gear on the second surface. When the driving gear rotates in a driving direction, one of the teeth is engaged with the pawl and drives the driven gear to rotates with the driving gear. When the driving gear rotates in an opposite direction, every tooth pushes up and slides under the pawl so the driven gear does not rotate along with the driving gear.

Abstract: A cage for a one-way clutch that is made of individual interlocking links. The cage links forms a continuous chain which is arranged on a shaft and housed within an associated outer ring. The cage links have connecting members and receiving grooves. The connecting members of one cage link are snapped into the receiving grooves of another cage link to form the continuous chain for different diameters. Sprags and/or load bearing rollers, along with spring elements, are arranged within each cage link.

Abstract: A free wheel, especially for a crank CVT, which has an inner ring, an outer ring that can rotate in at least one rotary direction in relation to the inner ring and is arranged radially around the inner ring, and a plurality of clamping bodies which have a head region and a foot region. The clamping bodies are arranged between the inner ring and the outer ring and can be subjected to the radially inwardly acting elastic force of a peripheral spring engaging in a spring groove, towards the inner ring. The guidance of the clamping bodies is carried out at the same time in the head region and in the foot region, and the clamping bodies are in the form of a cycloid in the head region and the foot region.

Abstract: A driving apparatus for a rear hub of a bicycle includes a hub shell, a single-directional driving component and a dual-directional driving component, wherein the single-directional driving component has a ratchet ring and a ratchet base, and a plurality of inclined helical surfaces are located around an inner perimeter of the ratchet ring, and a plurality of engaging ribs that engage with the wedging ribs of the fixed ring of the hub shell are located around an outer perimeter of the ratchet ring. A plurality of conjugating portions are located around an outer perimeter at one end of the ratchet base to form a resilient unit and a hook against the inclined helical surface. A plurality of conjugating ribs are located around one end of the dual-directional driving component, and the conjugating ribs are used to engage with the wedging ribs of the fixed ring of the hub shell.

Abstract: A freewheel arrangement, in particular for a crank-CVT, which has an inner ring, an outer ring, which can be rotated relative to the inner ring in at least one direction of rotation and which is arranged radially around the inner ring, several cam-shaped clamping elements, which have a foot area and a head area and are arranged between the inner ring and the outer ring in a cage and can be acted on in the direction of the inner ring by a radially inwardly directed spring force of a spring. The spring is a double-acting torsion spring, which simultaneously acts on the head area and the foot area of adjacent clamping elements and presses the clamping elements radially inward.

Abstract: A device for controlling a central shutter, in which a plurality of shutter leaves (3) are mounted on a circularly annular leaf carrier (1) such that they can be pivoted on a pivoting arm (4), and in which, as actuating device for the pivoting movement of the shutter leaves (3), an annular cam plate (5) is mounted on the leaf carrier (1) concentrically with respect to the shutter opening (2), such that it can be rotated continuously in one direction, it being possible for the rotation of the cam plate (5) to be blocked by mechanical engagement into a cam trough (8) in front of an actuating flank (6) of a cam, is distinguished by the fact that, for mechanical blocking purposes, there is a push rod (9, 10) of a solenoid, which push rod (9, 10) can be moved perpendicularly with respect to the plane of the cam plate (5).

Abstract: A one-way clutch includes an inner ring, an outer ring, a chamber between the inner ring and the outer ring; the outer ring includes a plurality of radially inwardly extending teeth facing the chamber; each of the outer ring teeth having a first path and a second path producing an alternating crest and valley formation; the first path having a greater length than the second path; the inner ring defines a plurality of radially outwardly extending teeth facing and contacting the outer ring teeth in the chamber; the inner ring teeth are configured and positioned within the inner ring thereof, at any rotational movement of the inner ring and the outer ring, at least one of the inner ring teeth is frictionally engaged with the second path; each of the inner ring teeth having a tooth support system in the inner ring; each of the inner ring teeth is radially movable within the tooth support system; the inner ring and the outer ring having a relative rotational movement when at least one of the inner ring teeth havin

Abstract: This invention provides a one-way clutch capable of hindering the generation of a coating between each sprag and each of inner and outer rings thereby preventing sprags and inner and outer rings from being damaged due to the slip therebetween and thereby lengthening the life of the engagement between each sprag and each of the inner and outer rings. The difference in surface hardness between each sprag (4) and each of an inner ring (2) and an outer ring (3) is set to be larger than a hardness of Rockwell C-scale HRC0 and to be equal to or smaller than HRC15.

Abstract: A clutch for a rotary drive device includes a rotary plate synchronously rotated with a sun gear of a planetary gear set, at least one pawl pivotally mounted onto the rotary plate, an engaging ring sleeved on the rotary plate and surrounding the at least one pawl, and a drive plate co-axially and rotatably mounted onto the rotary plate and abutting against the engaging ring. The planetary gear set is repeatedly operated and the pawls is automatically engaged to/disengaged from the drive plate for reducing noise during operating and lengthening the use life of the clutch for a rotary drive device.

Abstract: A freewheeling synchronizer for a power transmission device includes a clutch race rotationally fixable to a component of the power transmission device, and a synchronizer hub disposed radially outwardly of the clutch race and unidirectionally rotatable relative to the clutch race. The clutch race and synchronizer hub are freewheelable relative to one another.

Abstract: A freewheel clutch that has sprags, which are located between an inner locking track and an outer locking track and two sliding discs which each feature one inner axis adjacent to the inner locking track, one outer axis adjacent to the outer locking track as well as one middle section which connects the axes, and has an axial inwardly directed bending. The bending extends from the outer axis to the inner axis and preferably features a maximum embossing depth which is lower than the wall thickness of the middle section.

Abstract: A starting system for an internal combustion engine includes a pinion gear selectively driven by a starter motor, a drive plate having a set of teeth in constant meshed engagement with the pinion gear and a one-way clutch adapted to interconnect the drive plate and an engine crankshaft. The clutch assembly includes an inner race adapted to be fixed for rotation with the crankshaft. An outer race is fixed for rotation with the drive plate and has circumferentially spaced apart cam surfaces. The clutch also includes a cage for positioning rollers in circumferentially spaced apart alignment with the cam surfaces. A pair of seal plates are coupled to one of the inner race and the outer race. Each seal plate is positioned proximate to and spaced apart from the other of the inner race and the outer race.

Abstract: A freewheel arrangement, in particular for a crank-CVT, which has an inner ring, an outer ring, which can be rotated relative to the inner ring in at least one direction of rotation and which is arranged radially around the inner ring, several cam-shaped clamping elements, which have a foot area and a head area and are arranged between the inner ring and the outer ring in a cage and can be acted on in the direction of the inner ring by a radially inwardly directed spring force of a spring. The spring is a double-acting torsion spring, which simultaneously acts on the head area and the foot area of adjacent clamping elements and presses the clamping elements radially inward.

Abstract: A pawl carrier includes a tubular part having a number of depressions equally spaced from each other, and a number of openings located beside the depressions, the tubular part includes one or more latches for forming the opening of the tubular part, a number of ratchet pawls are engaged in the depressions of the tubular part and each has a tongue, and a number of spring biasing devices each include an anchoring member for engaging into the opening of the tubular part and each include an extension for engaging with the ratchet pawl and for anchoring the ratchet pawl to the tubular part, the latches of the tubular part are engaged with the anchoring member for retaining the anchoring member to the tubular part.

Abstract: The present invention relates to a compelling-type radial clutch device with C-shaped joint structure, in which a C-shaped joint structure assembly, which can be bended for displacement, is installed between an active rotary part and a passive rotary part with a radial arrangement means and is driven by the active rotary part, a joint axial core of C-shaped joint structure is provided for connecting an active arm of C-shaped joint structure and a compelling arm of C-shaped joint structure, an outward-expanding spring is installed between the two arms, so that a prestressed outward-expanding force is formed between the two arms for performing the angular displacement through bending at difference angles, the other end of the active arm of C-shaped joint structure is connected and fastened on the active rotary part; and the other end of the compelling arm of C-shaped joint structure is installed with a compelling roller which is outwardly expanded through the prestressed force and compelled to be engaged in an

Abstract: A controllable coupling assembly includes first, second and third coupling members supported for rotation relative to one another about a common rotational axis. A face of the first coupling member has pockets spaced about the axis. A face of the second coupling member has locking formations that are engaged by struts upon projecting outwardly from the pockets to prevent relative rotation of the first and second coupling members with respect to each other in at least one direction about the axis. A face of the third coupling member has pockets spaced about the axis. A different face of the second coupling member has locking formations that are engaged by struts from the third member to prevent relative rotation of the second and third coupling members with respect to each other in at least one direction about the axis.

Abstract: A one-way ratchet unit for a bicycle wheel has first and second meshing parts and an elastic member. The meshing parts are respectively configured on the bicycle wheel and the sprocket driving seat, their first and second one-way ratchets both comprise ratchet tips, ratchet roots and oblique guiding facets. The ratchet tips of the first or second one-way ratchet are configured with at least one wedge on partial positions, and the positions on the ratchet tips of the first or second one-way ratchet not forming the wedges form convex resisting edges. The ratchet roots of the second or first one-way ratchet are configured with wedge avoiding parts on partial positions, so that when the first and second one-way ratchets mesh each other and the resisting edges of the ratchet tips resist against the ratchet roots, said ratchet tips can be aligned and go into the wedge avoiding parts.