Abstract: The disclosure provides a super-abrasive body including a thermally stable polycrystalline diamond (TSP) body having a top region and an enhanced attachment region, wherein the enhanced attachment region includes tungsten carbide particles having a volume of at least 30% of the total volume of the enhanced attachment region. The disclosure further provides a super-abrasive element having the super-abrasive body attached to a substrate via an attachment material located in or around the tungsten carbide particles. The disclosure additionally provides earth-boring drill bits with such a super-abrasive element. Further, the disclosure provides methods of forming such super-abrasive bodies and elements by forming a PCD body with particle of tungsten carbide in an enhanced attachment region, then leaching the PCD body and attaching it to a substrate via an attachment material in or around the tungsten carbide particles.

Abstract: A multi-layered electromagnetic coil for a force-measuring system is based upon the principle of electromagnetic force compensation, as is a method for manufacturing the coil. The coil has a multifilar, specifically bifilar, wiring arrangement of coil wires. Preferably, the coil wires have a substantially rectangular cross-sectional profile. The cross-sectional profile of the coil wire is designed for achieving the densest possible packing of the windings in the coil can be achieved.

Abstract: A solar-powered vehicle with regenerative and mechanical braking includes a chassis or frame, a seat mounted to the frame, a rear axle rotatably supported on the frame, spaced apart left and right rear wheels mounted on the rear axle, and at least one front wheel mounted on the frame. The vehicle includes a selectively engageable regenerative braking system and a selectively engageable mechanical braking system. A lever for engaging the braking systems has three positions, wherein at a first position a reed switch on the lever engages a magnetic source, disabling the regenerative braking system. At a second position, the reed switch disengages the magnetic source, enabling the regenerative braking system. At a third position of the lever, the mechanical braking system is engaged.

Abstract: The invention relates to an additional roller having a rigid frame (3), with a drivable wheel (2) which is mounted in the frame (3) and has an axle (12), wherein the wheel (2) together with the frame (3) can be raised or lowered by pivoting relative to a chassis, on which the additional roller is to be mounted, and a compression spring (13) which is coupled rotatably at one end to the chassis is provided, in order, in the lowered position, to load the wheel (2) in respect of ground contact.

Abstract: An inverted pendulum type vehicle includes a first control processor that adds up a basic velocity command in a longitudinal direction and a lateral direction based on an operation through a joystick and a desired center of gravity velocity addition amount in the longitudinal direction and the lateral direction based on the movement of the body weight of the rider, thereby determining a desired velocity. A longitudinal travel velocity command limiter sets a desired center of gravity velocity addition amount, which is based on the basic velocity command based on a longitudinal manipulated variable of the joystick and a center of gravity offset influence amount based on the movement of the body weight of the rider, to a smaller value as a basic turn angular velocity command value increases.

Abstract: An inverted pendulum type vehicle (1) includes a propulsion unit (50) provided in a lower part of a vehicle body to actuate a main wheel (52), a drive unit (90, 130) provided in a vertically intermediate part thereof and a seat (200) provided in an upper part of the vehicle body. A battery case (251) is mounted in a part of the vehicle body above the main wheel and behind the drive unit. The battery case is provided with an opening (257) extending from an upper part thereof to a lower end of a rear part thereof. A lid (260) hinged to the battery case selectively covers the upper end of a battery (250) received in the battery case. The battery is retained in the battery case with the help of suitable engagement arrangements (262, 263, 270, 271, 273, 274).

Abstract: A base frame for an electric work vehicle equipped with a battery-driven electric motor includes a base plate, a plurality of device installation compartment plates and a battery accommodation compartment plate. The device installation compartment plates are fixed onto the base plate, and form a plurality of installation regions for mounting a variety of devices of the vehicle onto the base plate. The battery accommodation compartment plate is fixed onto the base plate, and forms a region for accommodating a plurality of batteries in an inside thereof.

Abstract: A hybrid construction machine includes: an electric storage device temperature adjustment circuit; an engine cooling circuit including a first coolant and switchable between a state the first coolant after cooling the engine is introduced into the electric storage device temperature adjustment circuit and a state stopping introduction of the first coolant into the electric storage device temperature adjustment circuit; an equipment cooling circuit that cools, with a second coolant, equipment needing cooling, and switchable between a state the second coolant is introduced into the electric storage device temperature adjustment circuit and a state stopping introduction of the second coolant into the electric storage device temperature adjustment circuit; and a controller controlling the engine cooling circuit, the equipment cooling circuit, and a lead-out switching valve such that the first coolant or second coolant selectively flows, according to whether the electric storage device needs to be warmed or cooled

Abstract: A battery housing configured to receive inner portions of a vehicle battery and which is configured to have a at least one vehicle seat directly mounted thereon and/or thereover.

Abstract: A method of using a folding vehicle having a chassis that functions as a protective, carry-on casing is provided. The vehicle has a chassis with a center member, a rotatably-lockable front strut, a rotatably-lockable rear strut, and two pivot points for converting the vehicle from an operational state to a collapsed state; and, a drive member with a crankshaft. The crankshaft and the rotatably-lockable front strut pivot share a central axis of rotation; and, the releasably-lockable front strut and the releasably-lockable rear strut are configured to fold into a complementary relationship in the interior of the channel in the collapsed state. The channel functions as a protective, carry-on case for the folding vehicle in the collapsed state.

Abstract: An inverted pendulum type vehicle includes a traveling unit with a main wheel, a vehicle body frame having the main wheel supported thereon, and a pair of left and right driving units supported on the vehicle body frame for driving the main wheel. The vehicle also includes a battery unit for supplying electric power to the driving units, a seat for supporting an occupant thereon, and a telescopic strut for supporting the seat for selected upward and downward movement. The telescopic strut is disposed between the driving unit and the battery unit in a front-to-rear direction of the vehicle body.

Abstract: An inverted pendulum type vehicle includes a vehicle body frame; a main wheel including a plurality of rotatable driven rollers arranged to form a ring, and a pair of left and right driving disks supported for rotation on the vehicle body frame. Each of the driving disks includes a plurality of rotatable driving rollers, disposed for contact in a twisted relationship with the driven rollers. The vehicle also includes a pair of left and right driven pulleys provided on outer sides of the driving disks, and a pair of left and right driving units, attached to the vehicle body frame above the main wheel, and including motors having output power shafts to which driving pulleys are attached. Endless transmission members interconnect the driving pulleys and the driven pulleys. The left and right driving units are disposed in an vertically offset relationship from each other.

Abstract: An inverted pendulum type vehicle is configured to permit a user to easily get on to the vehicle in a forward-facing posture from the rear of a vehicle body. The vehicle includes a seat for supporting a user thereon, as well as a main wheel driven by an inverted pendulum control, a vehicle body frame which rotatably supports the main wheel, and a tail wheel attached to a tail wheel arm, supported for pivotal motion on the vehicle body frame. The seat is attached to the vehicle body frame at an uppermost portion thereof. The vehicle body frame pivots rearwardly around an axle of the driving wheel together with the seat upon cancellation of the inverted pendulum control and the range of pivotal motion thereof is limited by contact thereof with the arm.

Abstract: An inverted pendulum type vehicle includes electrical components configured and arranged efficiently to provide a compact structure. The inverted pendulum type vehicle includes a traveling unit, including a main wheel driven under inverted pendulum control. The vehicle also includes a vehicle body frame supported on, and extending upwardly from the traveling unit, as well as a driving unit, including a pair of driving motors supported on the vehicle body frame and disposed above the main wheel for driving the main wheel. An electrical control unit is supported on the vehicle body frame in front of the driving motors for controlling the driving unit. The driving unit is disposed behind a front edge of the main wheel, and the electrical control unit is disposed between a front edge of the main wheel and the front edge of the driving unit.

Abstract: Assembling workability of driving disks to a vehicle body frame, and setting a spacing dimension of left and right driving disks in an axial direction with high accuracy to stabilize a traveling performance of an inverted pendulum type vehicle. The left and right driving disks are assembled to a hollow shaft member in a positioned state in an axial direction to form a subassembly. The hollow shaft member is fixed to a vehicle body frame by a bolt inserted in a central through-hole of the hollow shaft member.

Abstract: An inverted pendulum type vehicle includes a control device for controlling a plurality of electric motors, and a portable device, such as a portable telephone, for displaying a center-of-gravity display point indicating the position of a center of gravity and outputting a command for moving the vehicle. The control device controls a first actuator device and a second actuator device so as to move the vehicle according to the command output from the portable device and the tilting of an occupant boarding member. Such inverted pendulum type vehicle makes it possible to learn how to steer the inverted pendulum type vehicle.

Abstract: An electric motorcycle includes a front wheel and front suspension, a rear wheel and rear suspension, an electric motor with a transmission that provides motive force to the rear wheel and a composite monocoque structure extending between the front suspension, and the rear suspension and motor, which house a plurality of electric batteries. The monocoque structure may include internal partitions to provide increased strength or stiffness, these partitions creating compartments to separate the batteries. The batteries are arranged in one or more rows, each row being aligned with the axis between the mounting of the front suspension on the monocoque structure and the mounting of the rear suspension and motor on the monocoque structure.

Abstract: A hydraulic ride control system for mobile machine having an implement is disclosed. The ride control system may include a hydraulic actuator extending from the machine and connected to an implement, an accumulator, a valve controlling fluid flow between the hydraulic actuator and the accumulator, a sensor, a ride control selection switch and, a controller receiving signals from the sensor and the ride control selection switch and when the ride control switch is in manual position, only allowing fluid flow between the hydraulic actuator and the accumulator when the sensor indicates a predetermined value.

Abstract: Disclosed are a motor control apparatus and a method of controlling driving of a motor by the motor control apparatus, in which the motor control apparatus, which controls an electrically-driven motor, autonomously detects vehicle collision to autonomously control the operating state of the motor. The method includes determining a collision state of a vehicle, and stopping the driving of the motor according to the collision state of the vehicle.

Abstract: A system and method for operating a large single engine sweeper includes a transfer case assembly inserted into the chassis drive train of the vehicle on which a package of sweeping equipment is mounted. In road mode operation, power from the chassis engine passes through a chassis automatic transmission, through a transfer case assembly to the differential and real wheel assembly. In sweep mode, power passes from a propel hydraulic motor into the transfer case assembly and then to the differential and real wheel assembly.

Abstract: Connection terminals are provided for electrically connecting sensor terminals and through holes provided on a control substrate, and a control unit is provided with a frame of synthetic resin for holding the control substrate. The frame of synthetic resin is provided with: a connection terminal holding portion for holding one ends of the connection terminals connected to the through holes partially insert-molded and the other ends protruding outwardly from the frame of synthetic resin; and guide openings for guiding and making the sensor terminals insert therethrough so that the sensor terminals protruding from the outer circumference of the reduction gearbox extend to the position where the sensor terminals are connectable with the other ends of the connection terminals.

Abstract: Methods and apparatus are provided for a dithered EPS system of a vehicle. The apparatus includes a steering assembly having one or more sensors for sensing user steering input. A controller is responsive to the user steering input for providing a motor control signal. The apparatus also includes a dither signal generator providing a dither signal and a combiner for combining the motor control signal and the dither signal to provide a dithered motor control signal to control the motor of the apparatus. The methods include sensing user steering input via one or more sensors coupled to a steering assembly of a vehicle and generating a motor control signal responsive to the user steering input. A dither signal is generated and combined with the motor control signal to provide a dithered motor control signal that is used to control motor.

Abstract: Provided are a motor controller for suppressing a torque pulsation with a simple configuration and obtaining a sufficient output torque in the case of an open-type fault occurring in any one of windings of a motor and inverters, and an electric power steering device using the motor controller. In the motor controller for controlling a current supplied from and a voltage applied from a power source with respect to the motor including winding sets of a plurality of systems, when a fault determination unit (31) determines the occurrence of the open-type fault, the supply of the currents to the windings of one of the systems in which the fault has occurred is stopped by control performed on switching elements included in the inverter of the faulty system, whereas the supply of the currents to the windings of the normal system in which the fault has not occurred is continued.

Abstract: A noise attenuator for reducing clicking and slamming noises produced by the closing of a door includes a thin elongated rectangularly-shaped flexible, resiliently deformable padding member having D-shaped elastic strap loops protruding from opposite short vertical edges of the padding member. One of the strap loops is stretched to fit over a first door knob to thereby hang the attenuator from a first door knob preparatory to use. The padding member is pivoted to a horizontal use position over the door latch and the second loop stretched to fit over the second door knob. When the door is closed, the padding member prevents contact between metal parts of the door and door casing latching mechanism and prevents slamming contact between the door and members in the door casing.

Abstract: An acoustical vinyl tile having an integral acoustical layer is disclosed. The vinyl tile includes a vinyl portion, an acoustical portion, and an adhesive layer for fixing the vinyl portion to the acoustical portion. The acoustical portion comprises a crumb rubber component and a polyurethane foam component. The acoustical portion can include 10-40% crumb rubber and 60-90% polyurethane foam. The resulting vinyl tile meets ASTM E 2179 IIC sound requirements. A method of making a vinyl tile meeting the ASTM sound requirements is also disclosed. The method includes providing a vinyl slab portion, providing an acoustical slab portion comprising crumb rubber, polyurethane foam and a resin binder; and bonding the vinyl slab portion to the acoustical portion. Other embodiments are described and claimed.

Abstract: The bandwidth or acoustical range of a nacelle or other type of acoustic structure is increased by acoustically coupling honeycomb cells together to form pairs of acoustic cells that have an effective acoustic or resonator length that is up to twice that of either acoustic cell taken alone.

Abstract: Provided is a manually controlled flexible band play out and slack retracting device including a frame structure and shaft about which a band is wound. A hub may be mounted on the shaft, such that the strap is wound around the hub rather than the shaft, including a radially wound spring secured to the shaft at one and to inner side of the hub at the other end. The band feeds between flat surfaces of a clamping mechanism that includes a hand controlled braking device that applies a squeezing pressure to the band on a dispensing end.

Abstract: A suspension platform system having a work platform suspended between a sinistral modular mast and a dextral modular mast by a hoisting system. The modular masts are composed of at least two mast units stacked vertically and attached to one another. Each mast unit has a multifunction rail including a plurality of safety engagement devices and a stabilizer guide device, and a unit interconnection device. The work platform has at least two mast stabilizers that cooperate with the stabilizer guide devices to prevent undesired swaying of the suspended work platform. The work platform has a plurality of platform mast engagers cooperating with at least one of the mast safety engagement devices to releasably lock the platform to the modular masts. The hoisting system includes multiple carriages, hoists, and mast cables. Each carriage engages the associated mast so that the carriage may be conveniently slid up and down the mast.

Abstract: A wind turbine tower for mounting tower internals is disclosed. The wind turbine tower may include a plurality of tower sections and each of the tower sections may comprise a plurality of cans axially joined together, the plurality of cans including a top can and a bottom can and intermediate cans. Each wind turbine tower section may further include a top flange attached to the top can and a bottom flange attached to the bottom can. Brackets for supporting the tower internals are welded to the inside wall of each tower section, but the welded brackets are restricted to only the top one or two cans, and the bottom one or two cans, while a the remainder of the intermediate cans do not have any brackets welded thereto. The intermediate cans without any welded brackets may be fabricated of steel plate that is less thick, and therefore less costly.

Abstract: A tree stand is disclosed having few, if any, moving parts. The one-piece design, according to an exemplary embodiment, may make the tree stand simpler to use with less noise during use. The tree stand may include both a seat member and a standing member. A user may climb a tree by standing on the standing member, raising the seat member, sitting on the seat member, raising the standing member, and repeating this process to climb a tree, pole or the like.

Abstract: A portable belay anchor system is disclosed that provides a coupling location for safety rope attached to a climber, such as a roof inspector. The portable belay anchor system includes a base having a mast coupled thereto. The mast has a shaft portion and a flange portion. A plurality of removable weights are positioned on the shaft, coupled to the flange portion. The flange portion supports the weights so that the weight is carried by the shaft itself. A retaining member is coupled to the mast to hold the weights on the mast. A shackle is also coupled to the mast. A rope is coupled to the shackle to act a the belay rope which the user positions through a belay brake device.

Abstract: The invention relates to a rail transport system comprising at least two run- ners (20) having a shaped profile, a transport rail (61) and a transport carriage (2), the run- ners (20) with a shaped profile being exten- ded over a staircase or over a flat section and the transport carriage (2) being moved along the transport rail (61). The transport carriage is provided with at least one electric motor. The runners (20) having a shaped profile and the transport rail (61) are stored in the trans- port carriage (2). The invention also relates to a method for constructing a rail transport system and for transporting at least one con- tainer for loading and/or unloading the galley of an aeroplane, and to a system for simulta- neously loading and/or unloading the galley of an aeroplane.

Abstract: The invention presents a method and an arrangement for renewing the braking force of a brake of a hoisting machine. In the method the brake pad of a brake of the hoisting machine is pressed against the braking surface of a rotating part of the hoisting machine and the braking surface is moved in relation to the brake pad pressed against the braking surface by resisting the friction force between the braking surface and the brake pad.

Abstract: In a multi-car elevator, when two adjacent cars travel in a like direction, an elevator controlling apparatus: determines a shortest stopping position that is a stopping position at which a leading car stops in a shortest stopping distance from its present position; determines an estimated stopping position that is a stopping position of a trailing car if the trailing car is stopped urgently when the trailing car deviates from a speed change path for stopping using decelerating control by the elevator controlling apparatus from its present position and approaches the leading car; and controls a separating distance between the leading car and the trailing car such that the estimated stopping position is before the shortest stopping position.

Abstract: A method controls a set of semi-active actuators arranged in an elevator system to minimize a vibration of an elevator car. The elevator system is represented with a model of a virtual elevator system having a single virtual semi-active actuator arranged to compensate a virtual disturbance. The virtual disturbance is determined using a motion profile of position of the elevator car during the operation and a disturbance profile of the virtual disturbance. A state of the elevator system is determined using the model of the virtual elevator system, the virtual disturbance and a signal indicative of a horizontal acceleration of the elevator car during the operation. Each actuator of the set of semi-active actuators is controlled based on the state of the elevator system and according to a control policy of the virtual semi-active actuator.

Abstract: The invention relates to a brake disc (1) having a first (2) and a second friction surface (3), wherein the brake disc has at least one first blind hole (4), in particular one first blind bore, and is configured for making reliable wear monitoring of the brake disc possible in such a way that the first blind hole (4) emanates from the first friction surface (2) and ends within the brake disc (1) at a predetermined spacing from the second friction surface (3).

Abstract: This invention relates to a braking device (10) for a passenger conveyor comprising at least one movable part (12). The braking device (10) comprises a braking element (18) having a braking portion (34) engageable with the movable part (12) of the passenger conveyor. The braking element (18) is movable in a first direction into a position in which the braking portion (34) engages with said movable part (12) of the passenger conveyor. The braking element (18), in a state in which the braking portion (34) engages with the movable part (12) of the passenger conveyor, is movable in a second direction from a position of initial engagement of the braking portion (34) into a braking position of the braking element (18). The movement in the second direction is driven by movement of the movable part (12) of the passenger conveyor.

Abstract: A brake for an aircraft wheel comprising an actuator-carrier 14 that carries at least one electromechanical actuator 15 having a pusher 19 that is movable along a direction parallel to an axis of rotation X of the wheel 2 and facing friction elements 7, 10 in order to apply a braking force selectively against the friction elements 7, 10. The actuator-carrier 14 and the actuator 15 include guide means 25, 32 for guiding the actuator 15 while being installed on the actuator-carrier 14 in a radial direction Y until it reaches a service position. The guide means forms a bearing surface for transmitting braking forces from the actuator to the actuator-carrier. Position-holder means 37 holds the position of the actuator in its service position and comprises a strap 37 fastened to the actuator-carrier 14 to prevent the actuator 15 from moving on the actuator-carrier 14 in the service position.

Abstract: A vehicle disc brake assembly having a mechanical parking brake comprises: a piston carried by the brake assembly, the piston having a bore provided with an inner cone surface and an internal groove formed in an inner wall of the bore; an adjusting strut part disposed within the piston bore, the strut part having a flange configured to contact the inner cone surface; and a single, one-piece clutch spring carried by the strut part within the piston bore; wherein the clutch spring includes a main body having a plurality of legs extending therefrom, each of the legs including an outermost remote end configured to be received in the groove of the piston to secure the clutch spring within the piston and each of the legs configured to provide a spring force operative to bias the flange of the strut part against the inner cone surface of the piston.

Abstract: Disclosed herein is an electronic disc brake. The electronic disc brake includes a carrier on which a pair of pad plates are mounted, a caliper housing, which is slidably installed on the carrier and is provided with a cylinder having a piston mounted therein, a pressure device installed within the cylinder, the pressure device converting rotational motion into rectilinear motion to press and release the piston, the pressure device having an output key which protrudes by penetrating a rear wall of the caliper housing, a motor mounted on an outer surface of the caliper housing to generate drive force, a reducer coupled with a rotary shaft of the motor to amplify the drive force, and a coupling interposed between the reducer and the pressure device to transmit the amplified drive force to the pressure device, wherein the motor, the reducer, and the pressure device are coaxially connected in series.

Abstract: A wear distance sensor detects wear distance of a brake pad, in particular of a friction brake, and includes a housing having a friction side and a connecting side and a probe having two electrical conductor elements in combination with at least one electrical resistance element. Two dimensions of the resistance element are not constant depending on the wear distance. A third dimension of the resistance element, which has a three-dimensional design, is not constant depending on the wear distance.

Abstract: A vibration isolator is provided comprising a base structure, a load structure and at least one vertical air gap formed by opposing and substantially parallel walls of the base structure and the load structure. The opposing walls being at least partly covered by respective arrays of permanent magnets, neighboring magnets in the arrays having alternating magnetization directions, an arrangement of the permanent magnets in the arrays being such that a gravitational force on the load structure is substantially compensated by a net magnetic force of the base structure on the load structure.

Abstract: A valve arrangement controls a main flow of damping medium in a shock absorber between two chambers. The valve arrangement has an actuator positioned in an actuator chamber that is in fluid communication with the two chambers. A pilot valve has a pilot chamber that is in fluid communication with the actuator chamber. A restrictor arrangement restricts flow from the actuator chamber to the pilot chamber. A sub-valve cooperating with the restrictor arrangement to control flow between two flow paths.

Abstract: An apparatus comprises a portion of conductor bar, a plurality of carriers, and at least one variable frequency driver. The portion of conductor bar forms a portion of track for the carriers. The plurality of carriers are operable to engage the at least a portion of the conductor bar, wherein the plurality of carriers are able to advance along the track. The at least one variable frequency driver is configured to drive at least two of the plurality of carriers along the track.

Abstract: A rotational assembly hub can include a sprocket that is configured to rotate about an axis, where the sprocket can be located on a first side of a driver. Moveable paws can be located on a second side of the driver that is opposite the first side of the driver. The moveable paws can be configured to move from a recessed position within the driver to a protruding position when the driver rotates in a first direction in a first rotational mode and can be configured to remain protruding from the recessed position when rotated in the first direction in a second rotational mode. Other assemblies are also disclosed.

Abstract: The invention relates to a free-wheeling cage having a basic body, wherein the basic body includes a first cage ring and a second cage ring, which are arranged around a common axis and wherein cage webs extend axially between the two cage rings, whereby cage pockets are formed, wherein the basic body includes a lubricant reservoir which allows a metered dispensing of lubricant.

Abstract: A hub includes an arbor shaft, a ratchet wheel, an internally-toothed ring, a shell, a clutch member and a second spring. The ratchet wheel includes at least one chain wheel, a plurality of concavities, a plurality of pawls and a plurality of first springs. The chain wheel and the concavities are disposed on two opposite sides of the ratchet wheel respectively. Each pawl has a first end and a second end. Each spring has a first end and a second end. The internally-toothed ring surrounds the pawls and has an inner periphery formed with a plurality of inner teeth. The clutch member has an axial hole and a cam. The present invention is advantageous in the way that the pawls and the internally-toothed ring do not make “kada-kada” rattle noise nor drive the pedals during idle running of the hub.

Abstract: A switchable coupling, in particular for vehicle auxiliary assemblies, is provided. The coupling includes an actuating system actuated electrically, mechanically, pneumatically or hydraulically between a driving element and an output element, and a switching element movable between switching start and end positions counter to the force of one or more resetting elements upon actuation of the actuating system. In the end position, the switching element connects the driving and output elements such that the output element and an auxiliary coupling connected thereto rotate with the driving element. After deactuation, locking bodies located on the auxiliary coupling produce an connection between the driving and output elements which continues to conduct torque between the driving and output elements. The connection is interrupted only when the rotational speed of the driving element falls below a limit value. The coupling does not require a permanent supply of power in the open or closed state.

Abstract: A switchable coupling with a coupling system between a driving element and an output element is provided. The switchable coupling includes an actuator, an elastic actuating element and a switching element movable between starting, central and end positions. In the central position the switchable coupling has a different state (open or closed) than in the starting position. The switchable coupling further includes a bolt constrained between first and second bolt stops. Axial movement of the switching element causes operative surfaces connected to the switching element or the bolt to engage with elements on other of the switching element and the bolt, such that the bolt rotates relative to the switching element. The bolt alternately moves relative to the switching element into a first relative position blocking switching element movement in the central position, and into a second relative position permitting movement of the switching element toward the starting position.

Abstract: A rotation transmission device includes an outer ring having an inner cylindrical surface, and an inner ring having outer cam surfaces. A pair of rollers and an elastic member biasing the rollers away from each other are mounted between the cylindrical surface and each adjacent pair of the cam surfaces. The rollers and the elastic members are retained by a control retainer and a rotary retainer each having a flange and crossbars extending from the flange and circumferentially alternating with the crossbars of the other retainer. The respective opposed pairs of rollers are pushed by the respective crossbars to a disengaged position when the retainers rotate relative to each other. The crossbars of the retainers are disposed between the outer ring and the inner ring and the flanges are provided outside the outer ring to minimize the axial length of the outer ring.