Abstract: An apparatus including a belt support system having a first belt support roller and a system for automatically moving the first belt support roller. The belt support system partially wraps a continuous belt on a belt drive roller. The belt support system includes the first belt support roller at an upstream side of the belt drive roller and a second belt support roller at a downstream side. The system for moving the first belt support roller moves the first roller from a first location relative to the belt drive roller to a second different location, based upon a predetermined load of the belt on the first belt support roller to thereby reduce an amount of wrap of the belt on the belt drive roller and reduce a length of the belt located proximate to the belt drive roller between the first and second belt support rollers.

Abstract: An engine according to an aspect of the present invention includes a crankshaft which is disposed in a substantially horizontal direction, first power transmission means, an input shaft, a first output shaft, second power transmission means, and a power transmission case. The input shaft is disposed below the crankshaft in parallel with the crankshaft, and the input shaft receives a power from the crankshaft through the first power transmission means. The first output shaft supplies the power from the input shaft, and the first output shaft is disposed perpendicular to the crankshaft. The second power transmission means transmits the power of the input shaft to the first output shaft. The power transmission case accommodates the input shaft, the first output shaft, and the second power transmission means therein.

Abstract: The present invention provides a tension regulating apparatus for a chain of a leftover food treating device which comprises an agitation shaft having agitation blades and rotatably installed in an agitation tank and a rotation unit installed on one side of the agitation shaft for providing the agitation shaft with a rotational force, the tension regulating apparatus comprising: a driving sprocket engaged with a driving shaft of a driving motor provided on one side of the agitation tank; a driven sprocket connected to the driving sprocket by a connecting chain and engaged with one end of the agitation shaft; and a tension sprocket provided between the driving sprocket and the driven sprocket, for regulating the tension of the connecting chain.

Abstract: A motor to accessory drive system wherein an electric or gasoline motor, having a housing with a drive shaft end protruding from the motor housing, is mounted with respect to the accessory to be driven, such as a pump or a generator, which also has a housing with a drive shaft protruding from the accessory housing, with a mounting plate secured at one end to the motor housing, and secured at another end to the accessory housing whereby the accessory is supported from the motor. The mounting plate is provided with spaced apertures with the drive shaft ends of the motor and accessory respectively protruding through the apertures in parallel alignment. A drive pulley is mounted on each of the protruding drive shaft ends in alignment in a common plane and an endless belt is in driving engagement with the pulleys.

Abstract: The following steps are performed in the control method: determining a mode of operation from amongst a permanent mode and a transient mode, as a function of a set of variables comprising said estimated values; correcting the value of the speed of rotation of the outlet shaft in such a manner that: if the mode has been determined as being the permanent mode, then the moving average (L?) of the gear ratio (L) over a period (T) of a plurality of unit time intervals lies between a first threshold value (S1) that is negative and a second threshold value (S2) that is positive; and if the mode has been determined as being the transient mode, then said moving average (L?) of the gear ratio (L) lies outside the range of values defined by the first and second threshold value (S1, S2).

Abstract: A belt unit having a belt stretched by a plurality of rollers is removably mounted in an image forming apparatus. A pressure removing member moves a tension roller for applying tension to the belt from a first position to apply the tension to the belt to a second position to remove the tension from the belt. After the belt unit is positioned and mounted in the apparatus body by engaging the rollers with positioning portions in an apparatus body frame in a state in which the tension roller is moved to the second position by the pressure removing member, the tension is applied to the belt by moving the tension roller to the first position by the pressure removing member.

Abstract: A stepped set groove having shallow and deep portions is formed in the inner periphery of a cylinder chamber formed in a housing of a chain tensioner near its open end. A radially and elastically deformable set ring having circumferentially separated ends is received in the set groove in a radially compressed state. The set ring has at the respective ends thereof a pair of grip portions which are received in a cutout formed in housing at its front end. By engaging the set ring in an engaging groove formed in the outer periphery of the plunger near its front end and the shallow portion, it is possible to keep the plunger pushed into the cylinder chamber. In this state, the chain tensioner is mounted in position.

Abstract: A sheet material conveyer system includes a sheet-transfer conveyer having an endless sheet-transfer belt for conveying sheet materials, a heater provided below the elevation of the endless sheet-transfer belt for heating the sheet materials being carried on the endless sheet-transfer belt to a dry state, an impression belt assembly having an endless impression belt disposed above the endless sheet-transfer belt for guiding movement of the sheet materials with the endless sheet-transfer belt, and tension supports insertable into a conveying space between the endless sheet-transfer belt and the endless impression belt from two opposite lateral sides to support the endless impression belt in shape and to control the tension of the endless impression belt.

Abstract: Provided is an air compressor that can keep good alignment between pulleys 2b and 3b respectively of a compressor body and an electric motor, and a drive belt 4 placed thereacross. Between a base 1 and the electric motor 3, an adjustment mechanism 5 is provided for adjusting the tension of the drive belt 4 by changing the relative position between the compressor body 2 and the electric motor 3. The adjustment mechanism 5 is provided with an electric-motor base 6 for supporting the electric motor, a support unit 7 that supports the electric-motor base 6 to allow a tilting axis thereof to be able to tilt at a position lower of an output shaft of the electric motor, and fixing unit 8 provided between an end of the electric-motor base 6 and the base 1 for fixing the electric-motor base 6 in a tilting state.

Abstract: A tensioner for imparting tension to a chain in a closed loop chain drive system of an internal combustion engine is disclosed. The tensioner contains two tensioning devices, one for each strand of chain that traverses between a drive sprocket and at least one driven sprocket. The two tensioning devices are installed on a single bracket which is mounted to the engine housing at a single dampened pivot mount. The pivot mount is positioned equidistant from the mid points along the lengths of each of the chain sliding surfaces of each of the tensioning devices to substantially form an isosceles triangle.

Abstract: A chain tensioner includes a housing having a cylinder chamber. A plunger is slidably mounted in the cylinder chamber. A spring is mounted in the cylinder chamber to bias the plunger outwardly of the cylinder chamber. The plunger has a radially extending locking pin at its lower portion near its front end. The housing is formed with a pin hole extending substantially perpendicular to an axis of the cylinder chamber near the front end of the housing and under the cylinder chamber. The chain tensioner further includes a support pin inserted in the pin hole, and a locking lever supported on the support pin so as to be pivotable about the support pin. The locking lever can engage the locking pin when the plunger is sufficiently pushed into the cylinder chamber, thereby keeping the plunger pushed in the cylinder chamber.

Abstract: The present invention is directed to a versatile belt tensioner comprising a base plate, a slider plate, a pulley secured a unitary post joined to one end of the slider plate, and manually operable adjustment assembly for moving the slider plate and pulley relative to the base plate, to tension a drive belt. The base plate is formed with an inverted, U-shaped downwardly opening guideway, and the slider plate is moved within the guideway relative to the base plate to adjust the position of the pulley relative to the drive belt by way of a manually operable adjustment knob. A bearing extends between the post and the pulley seated thereon, so that the pulley can be replaced to accommodate drive belts of different size and different teeth configurations.

Abstract: An accessory drive for an engine has a belt driven starter generator adapted for driving and being driven by the engine. In an exemplary embodiment, the drive includes a first engine drive pulley and a second starter drive pulley. A drive belt engages the drive pulleys for driving either pulley from the other. A dual belt tensioner made as a preassembled unit has a carrier with a central pivot mounted to the engine and first and second carrier arms extending radially from the central pivot. A first tensioner mounted on the first arm carries a first tensioner pulley biased against a first belt run adjacent the second drive pulley that is slack during engine starting.

Abstract: A belt tensioner comprises a belt trained on a drive pulley driven by a drive unit mounted on a base supported on an air-spring bellows linearly extendable under fluid pressure from a collapsed position to an extended position to cause joint movement of the base, the drive unit and the drive pulley and thereby change the tension in the belt. A pressure regulator is operatively connected to the air-spring bellows for regulating the fluid pressure in the air-spring bellows such as to maintain the tension substantially constant in the belt during use.

Abstract: A tensioner for imparting tension to a chain having a body, a resilient chain guide element, at least one blade spring, and at least one bracket. The body of the tensioner has a surface with a profile of the path of a new chain and a groove found longitudinally along the length of the surface. The resilient chain guide element, on the surface of the body has a chain contact surface and two ends wrapped around the ends of the body, with the chain guide being sufficiently larger than the body, such that the chain contact surface is capable of being biased away from the body. The blade spring is present in the groove with its end in the containments means of the groove, biasing the chain guide out and away from the body. At least one bracket is fixedly attached to the body and has a pivot.

Abstract: A tool for creating tension of a chain on a cycle according to one embodiment comprises a wheel engaging portion; a frame engaging portion positioned opposite the wheel engaging portion; and at least one handle operatively coupled to the wheel engaging portion and the frame engaging portion such that application of force on the at least one handle is operative to bias the wheel engaging portion and frame engaging portion away from each other.

Abstract: A tensioner that includes a piston supported slidably in a piston bore formed in a housing, a piston spring biasing the piston in the protruding direction, and a circlip member having an expandable ring-shaped body that is engageable with the rack teeth of the piston. In the piston bore, the ring-shaped body of the circlip member is adapted to engage with an upper and lower stop surface. The rack teeth of the piston are formed in such a shape that when the ring-shaped body of the circlip member engages with the upper stop surface of the piston bore, the piston is permitted to move in the protruding direction and, when the ring-shaped body of the circlip member engages with the lower stop surface of the piston bore, the piston restricts movement in the retracting direction.

Abstract: A threaded member is coupled to a ring. The ring is adapted to engage a washer of a bolt-washer combination which is used to movably secure a generator or other device to a bracket, frame or other fixed structure. A saddle is adapted to engage a portion of the bracket or frame. The threaded member passes through an opening formed in the saddle, and a rotatable member threadably engaged with the threaded member is rotated to apply a force to the bracket or frame, thereby moving the generator or other belt-driven device in a desired direction relative to the bracket or frame to adjust the tension level on the belt.

Abstract: A system, in one embodiment, may include a chassis, an engine coupled to the chassis, a generator coupled to the engine, and a rotary screw compressor coupled to the chassis independent from the engine. The engine may be configured to drive both the generator and the rotary screw compressor. A method, according to another embodiment, may include isolating a rotary air compressor from an engine and a generator in a common chassis. The isolating may include separately mounting the rotary air compressor and the engine with a resilient or distance adjustable connection in between. The isolating also may include resiliently mounting the engine, or the rotary air compressor, or both.

Abstract: An eccentric adjustment and mounting system is useful for belt engaging engine components such as alternators or water pumps. The system includes a housing fixed to the engine, a socket rotatable in pawl-and-ratchet fashion within the housing, and a socket aperture eccentrically disposed relative to the socket's axis. The aperture receives the belt engaging component, whereby rotation of the socket moves the component to adjust belt tension.

Abstract: Anti-backlash device for an internal combustion engine, which has a timing chain, includes a body having a stop shoulder to provide a default tension for the chain; and a mounting feature with the body. The device can be part of a kit, and can be mounted in combination with the engine. A method of reducing or avoiding backlash in a timing chain in an internal combustion engine can embrace providing the device and installing it in the engine, optionally further running the engine with the installed device.

Abstract: A low profile tension adjuster for use with a chain or belt driven power transmission system which has a slidable bar that sits inside of a yoke and over an axle and a base plate and set screw arrangement that abuts the slidable bar. The set screw and base plate being utilized to force the slidable bar into a positive fixed contact with the inside yoke end and then force the base plate and axle rearward in order to tighten the chain or belt power transmission system. The entire tension adjuster being generally cylindrical in shape and not extending beyond the ends of the yoke.

Abstract: An eccentric tensioning device for tensioning the traction means of a traction means drive is provided. The invention provides solutions, through which advantages are given in the installation of tensioning devices under assembly-specific aspects. The eccentric tensioning device for a traction means drive includes a track roller device, which has a running disk and a rolling bearing provided for supporting this disk, a work eccentric for supporting the track roller device such that it can be displaced in a radial direction relative to the rotating axis of the rolling bearing through pivoting of the work eccentric, a torsion spring for pretensioning the work eccentric, and a fixing device for securing the work eccentric in a mounting position, in which the torsion spring is located in pretensioned state.

Abstract: A crank shaft power takeoff system, including an appliance intended for use in connection with lawns and/or gardens, the appliance including an engine that includes a crank shaft, the system further including an accessory used in conjunction with the appliance, and a transmission for utilizing the crank shaft of the appliance engine to operate the accessory.

Abstract: A single-axis drive, two-dimensional specimen position-shifting apparatus includes a rotary drive mechanism drivingly coupled to a cam shaft to rotate it about a longitudinal axis. The cam shaft has a threaded portion around which a compatibly threaded extender can spin and a cam throw including a cam bearing surface portion of changing distance relative to the longitudinal axis as the cam shaft rotates. A stages bracket includes first and second portions operatively coupled to, respectively, the threaded extender and the cam bearing surface to impart concurrent movement of the stages bracket in orthogonal directions in response to rotation of the cam shaft. The threaded extender provides longitudinal displacement as the cam bearing surface portion provides lateral displacement, to the stages bracket. A target specimen, such as an optical element, is typically mounted to the stages bracket and moves in concert with it.

Abstract: The present invention relates to a chain stabilizing device in a hyperthermo-therapeutic apparatus and a method of using the same. Instead of a conventional feeding means with a complicated structure, the present invention comprises a first hinge shaft with a simple structure, level control rods each of which has one end hingedly coupled to the first hinge shaft and the other hingedly coupled end, a second hinge shaft to which the other ends of the level control rods are hingedly coupled, and a hyperthermo-therapeutic unit support hingedly coupled to the second hinge shaft. At this time, the first hinge shaft has rollers installed at both side ends thereof and engaged with linear rails, while the hyperthermo-therapeutic unit support has rollers provided at both side ends thereof and rotatably engaged with curved rails.

Abstract: In a belt drive system 20 for transmitting torque at a crankshaft 11 of an automotive engine 10 to a supercharger (engine accessory) 130a, an output pulley unit 40 formed of a first flat pulley 50 and a second flat pulley 60 is coupled to the rotational shaft 131a of the supercharger 130a. A flat belt 70 entrained between the output pulley unit 40 and the crank pulley 30 of the crankshaft 11 is shifted from the first flat pulley 50 to the second flat pulley 60 or vice versa by a speed ratio selector 80. The rotational shaft 131a can thereby be driven into rotation with the switching between a high speed ratio during acceleration and a low speed ratio during constant speed cruise. As a result, the supercharger 130a can bring out its capability into full play without using parts involving increases in weight, cost and power consumption, such as a solenoid-operated clutch, and concurrently suppress the deterioration of fuel economy.

Abstract: In an auto tensioner, a high pressure oil chamber sectioned by a leading end portion of a cylinder and a plunger is provided within the cylinder. A gas chamber and an oil reservoir chamber are sectioned in a sealed manner in an outer periphery of the cylinder and the plunger. A first oil passage communicating the gas chamber with the high pressure oil chamber is provided within the plunger. A second oil passage communicating the high pressure oil chamber with the oil reservoir chamber is provided in the cylinder. The first oil passage is provided with a pressure side damping force generating means, (an orifice hole) and a first check valve closing during expansion. A second check valve closing during compression is provided in the second oil passage, and a locking means (an electromagnetic valve) closing the first check valve is provided.

Abstract: A tensioner comprising a base having a toothed portion, a pivot arm pivotally engaged with the base, a pulley journalled to the pivot arm, a spring disposed between the base and the pivot arm for biasing the pivot arm in a first direction, a mechanism disposed on the pivot arm and engaged with the base, the mechanism comprising a rotatable geared member and a second spring engaged between the geared member and the pivot arm, the second spring biasing the pivot arm in the first direction, and the geared member having a non-toothed portion that when the non-toothed portion is engaged with the toothed portion it prevents substantial rotation of the pivot arm in a reverse direction from the first direction.

Abstract: A chain drive having a phaser such as a hydraulic vane phaser interposed between a timing chain and a driving or driven shaft is provided. The phaser or the vane are controlled to oscillate more at certain engine speeds to thereby reduce the tensioning force on the chain at the certain engine speeds.

Abstract: A tensioning device for a chain drive of an internal combustion engine, having a support member (1) which is pivotally mounted thereupon and is axially snapped onto and retained on a bearing journal (4) of the support member (1) via a bearing lug (5). The support member (1) is formed as a deep-drawn sheet metal component and is formed in a single piece with the bearing journal (4). The bearing journal (4) is provided with a cup-shaped hollow form. The tensioning rail (2) is axially secured to the support member (1) by a wrap-around (12).

Abstract: A tensioner for endless driving elements, such as chains and belts, comprising a tensioning piston provided with locking means, and a locking piston which is adapted to be engaged with and disengaged from the locking means so as to arrest or release the movement of tensioning piston, the locking piston comprising an operating section causing locking piston to move to the arresting position and to the release position, and a locking area used for engagement with the locking means of the tensioning piston and arranged separately from the operating section.

Abstract: Plural auxiliary devices such as a water pump and a generator coupled to a serpentine belt-drive system are driven by an internal combustion engine mounted on an automobile vehicle. The generator is divided into a first generator having a pulley in which a one-way clutch is installed and a second generator having a usual solid pulley. Fluctuations in the belt tension caused by changes in instantaneous rotational speed of the internal combustion engine are suppressed or reduced by the one-way clutch installed in the pulley of the first generator. An inertia torque of a rotor of the first generator may be made higher than that of the second generator because effects of the inertia torque on the belt tension fluctuations are alleviated by the one-way clutch.

Abstract: An apparatus for testing an alternator has a base, a motor mounted to the base and a pulley extending from the motor. A belt is connected to the motor pulley and the alternator. A mount mounts the alternator to the base, and a pivoting idler arm pivotally is mounted with respect to the base and has an idler pulley that engages the belt to apply tension to the belt.

Abstract: The invention is directed to a tensioner assembly for providing tensile force from a floating vessel at the surface of the ocean to the blowout preventer stack, or production tree, which is connected to the wellhead at the sea floor. The tensioner assembly compensates for vessel motion induced by wave action and heave and maintains a variable tension to the riser string alleviating the potential for compression and thus buckling or failure of the riser string. The tensioner assembly of the present invention includes a cylinder, a stop tube disposed with the cylinder, and a ram slidably engaged within the stop tube. The tensioner assembly also includes at least one gas, or air, transfer tube to create a pressurized air over hydraulic fluid arrangement to provide tensile force to the tensioner assembly.

Abstract: A drive belt tensioning method and assembly using a dual spring tensioner. A pulley from a drive belt/pulley system is mounted onto a pivot arm having a pivot point. A tensioner spring mounts between the machine frame and the pivot arm, such that is causes rotation of the pivot arm about the pivot point in the opposite direction that the belt/pulley system causes rotation about the pivot point. A stop is used to keep the pivot arm in the position of tensioner spring/belt/pulley system equilibrium. This stop is mounted to the machine frame after the pivot arm equilibrium is reached. A retainer spring mounts between the machine frame and the pivot arm such that when in tension it causes a rotational force about the pivot point in the same direction that the tensioner spring causes a rotational force about the pivot point.

Abstract: A tensioner for a chain, includes a tensioner piston bearing upon a chain and guided by a cylinder for movement in the direction of the chain. The cylinder and the piston define a pressure chamber for receiving hydraulic fluid, wherein hydraulic fluid is able to escape from the pressure chamber via a leakage gap. A control member is provided to at least reduce the leakage gap in size, when a pressure in the pressure chamber increases.

Abstract: A pivoting chain guide and tensioner assembly for use with an endless chain loop comprising: at least one bracket plate, a tensioner attached to the at least one bracket plate, and a guide attached to the bracket plates. The bracket plate surrounds the chain at least partially between a driving and a driven sprocket and at least one of the plates has a hole for a pivot at a center axis. The tensioner comprises a tensioner arm with a chain sliding face for contacting the outside of the chain and a biasing means. The guide has a chain sliding face that contacts the outside of the chain. When a high local load is applied to the chain, the load is received by the end of the guide, forcing the guide to move away from the chain, such that the bracket plate pivots, moving the tensioner relative to the chain.

Abstract: An idler or tensioning assembly for an electronically controlled sanding/polishing machine is provided, the sanding/polishing machine utilizing a plurality of exchangeable polishing wheel assemblies of which the idler assembly is one. Each polishing wheel assembly interfaces with the sanding/polishing machine through a coolant manifold and a polishing wheel shaft receptor. The idler assembly is operative to provide releasable tension to a sanding/polishing belt that is situated around the idler and the associated sanding/polishing wheel. The idler assembly has a pivoting idler that is actuated by a hydraulic cylinder. The hydraulic cylinder utilizes coolant tapped from the coolant manifold of the idler assembly for actuation. Coolant is provided to the hydraulic cylinder in response to a valve signal. The idler assembly thus has a tensioned mode and an untensioned mode.

Abstract: A device serves to regulate the tension of a running belt. The belt is deflected on rollers of which one is designed as a force measuring roller and is connected to a displacement sensing device. This roller is provided with at least one force sensor that determines the force applied to the belt. In addition, this roller is position adjustably held by an actuating drive in order to be able to adjust the tension of the belt. The actuating drive is in an operative connection with a regulating device that is influenced by a correction device. This correction device determines the web tension from the force applied to the belt measured by the force sensor and from the position of the force measuring roller, that changes with the position of the tension regulating roller, and transmits this output as an actual value to the regulating device.

Abstract: A drive system for an imaging device of the type having a curved arm. The drive system includes a carrier that engages and supports the curved arm such that the curved arm can be moved along the carrier. The drive system includes a belt extending through the carrier and secured about the periphery of the curved arm. The drive system receives and drives the belt to move the curved arm relative to the carrier. The drive system includes a tensioning mechanism configured to move in such a direction relative to the carrier in order to increase the tension on the belt and to move in such a direction relative to the carrier in order to decrease the tension on the belt.

Abstract: A hydraulic tensioner includes a cylinder having a hollow space filled with hydraulic oil. A plunger is slidably mounted in the cylinder. A pushrod is mounted in the hollow space so as to be axially movable together with the plunger with one end thereof protruding from the cylinder. A spring is mounted in the cylinder to bias the plunger and pushrod outwardly of the cylinder. The plunger is formed with a passage through which a pressure chamber and reservoir chamber communicate with each other. The passage is formed with a valve seat. A check ball is arranged so as to be moved into and out of contact with the valve seat. The check ball is adapted to contact the valve seat when pressure in the pressure chamber exceeds pressure in the reservoir chamber, thereby closing the passage. The valve seat is formed of a steel for carburizing and has a surface carbon concentration of 0.55–0.75% to reduce deposition of carbides and to have a surface hardness at least equal to that of the check ball.

Abstract: An improved pneumatic tensioner apparatus is disclosed, the apparatus including: a main drive belt; a chuck assembly, suspended from said main drive belt, having a spinning member and a drive contact portion; a first frictional drive belt in a first track in contact with said drive contact portion operative to spin said chuck assembly; a first tension adjusting device operative to apply pressure to said first frictional drive belt tangentially to said drive contact portion; a second frictional drive belt disposed in at least one idler roller on an opposite side of said chuck assembly to said first frictional drive belt, said second frictional drive belt in contact with said drive contact portion; and a second tension adjusting device operative to apply pressure to said second frictional drive belt tangentially to said drive contact portion.

Abstract: A belt weighing apparatus for maintaining high accuracy in weighing by way of maintaining a fixed tension in the belt and preventing the belt from oscillating. The belt conveyor is comprised of a supporting frame, an upper guiding unit arranged on the supporting frame, a first and a second end-supporting device arranged on the supporting frame in proximity to the opposite ends of the upper guiding unit, a motor unit, at least one weighing platform arranged in-between the first and a second end-supporting devices, a lower guiding unit having a first property arranged on the supporting frame, and an endless conveyor belt having a second property is extended between said first and a second end supporting devices.

Abstract: A generator for alleviating fluctuations in instantaneous rotational speed of an internal combustion engine is included in a belt-drive system. When an average rotational speed of the generator is lower than a predetermined speed, for example, an idling speed, a generation torque of the generator is controlled to reduce the belt tension fluctuations. When the average speed of the generator is higher than the predetermined speed, the generator is controlled in a usual manner to supply a stable power to the electric loads.

Abstract: The invention is directed to a tensioner assembly for providing tensile force from a floating vessel at the surface of the ocean to the blowout preventer stack, or production tree, which is connected to the wellhead at the sea floor. The tensioner assembly compensates for vessel motion induced by wave action and heave and maintains a variable tension to the riser string alleviating the potential for compression and thus buckling or failure of the riser string. The tensioner assembly of the present invention includes a cylinder, a stop tube disposed with the cylinder, and a ram slidably engaged within the stop tube. The tensioner assembly also includes at least one gas, or air, transfer tube to create a pressurized air over hydraulic fluid arrangement to provide tensile force to the tensioner assembly.

Abstract: A shiftable toothed-belt drive, containing an engagement and disengagement device, in order alternately to mesh radially and demesh radially a toothed belt, which is guided around at least two gearwheels, with and from at least one of the two gearwheels. A disengager in the form of two externally profiled pulleys is urged axially along the shaft of one of the gearwheels supporting the toothed belt for radially raising the belt and demeshing the belt from the gearwheel. An engager engages the outside of the belt for tensioning the belt sufficiently to counter the effect of the disengager, move the pulleys apart and mesh the belt with the one gearwheel.

Abstract: An electric power steering apparatus includes a speed reducing mechanism for decelerating the rotation of a rotatable shaft in an electric motor and a converting mechanism for converting the output rotation of the speed reducing mechanism into the axial movement of a steering shaft extending toward the right and left sides of a vehicle. The speed reducing mechanism includes an input pulley driven by the electric motor, an output pulley arranged with the steering shaft enclosed thereby, a belt for connecting the input pulley and the output pulley to each other, and a belt tension adjuster.

Abstract: A variable speed drive assembly with a double pulley, and a transmission input pulley. A first belt extending between a power source and a double pulley and a second belt extending between the double pulley and the transmission input pulley. A linkage assembly operating to move the double speed pulley toward the transmission input pulley to increase the vehicle speed. The drive assembly capable of disengaging or placed in a neutral condition when power to the vehicle is removed.

Abstract: A blade-type tensioner for applying tension to a chain comprising a base, an arcuately shaped blade shoe having a chain sliding face, a spring provided on a back side of the blade shoe, and a guide member. The blade shoe has a proximal end portion and a distal end portion, where the proximal end portion is swingably supported on the base, and the distal end portion is slidably supported on a slide plate of the base. The slide plate is arcuately shaped to form a concavely arcuate arc face on an opposite side of the distal end portion of the blade shoe, and the distal end portion of the blade shoe has a convexly arcuate arc face corresponding to the concavely arcuate arc face of the slide plate. The distal end portion of the blade shoe is guided by a self-aligning action of the concavely arcuate arc face of the slide plate in such a way that the distal end portion is centrally positioned in a lateral direction on the slide plate.