Abstract: A header for a combine harvester includes a conveyor belt for conveying crop material in a conveyance direction, and an adjusting device for adjusting a tension of the conveyor belt. The adjusting device includes a cable that is movable with respect to a frame member of the header. A portion of the cable that is either directly or indirectly attached to one end of a roller for the conveyor belt extends either parallel to or substantially parallel to a tensioning direction of the conveyor belt for adjusting the tension of the conveyor belt. The conveyor belt may be an infeed conveyor belt or a lateral conveyor belt of a draper header, for example.

Abstract: An air-cooled heat exchanger has a frame assembly, a plenum supported by the frame assembly, an engine and a fan assembly. The engine includes a drive shaft and the fan assembly includes a fan connected to a fan shaft. The fan assembly is configured to move air through the plenum. The air-cooled heat exchanger also includes a drive assembly connected between the engine and the fan assembly. The drive assembly has a fan shaft sheave connected to the fan shaft, a driver sheave connected to the drive shaft, an idler pulley, and a drive belt in contact with the fan shaft sheave, driver sheave and idler pulley. The air-cooled heat exchanger has an idler bearing adjustment mechanism that is configured to adjust tension on the drive belt by adjusting the position of the idler pulley relative to the drive belt.

Abstract: A camera controller is configured to control a camera through voice commands. The camera controller includes drain mechanisms that allow the camera controller to be used in environments in which the camera controller is exposed to fluids. The camera controller device comprises a housing body with an outer surface including a first opening and a second opening. A first channel extends from the first opening into the housing body and to a cavity in which a microphone is located, enabling audio signals entering the first opening to be captured by the microphone. A membrane is located between the first channel and the microphone to create a waterproof seal over the microphone. A second channel extends from the first channel to the second opening to create a drain such that fluid entering from the first opening can flow from the first channel through the second channel and out the second opening.

Abstract: A conveyor employs an infeed assembly and outfeed assembly, each comprising a nosebar assembly that may be mounted to a conveyor frame to transition a conveyor belt between a returnway and a carryway, a belt guiding roller, such as a sprocket or brake, a position limiter for ensuring proper engagement between the belt guiding roller and the conveyor belt and a connecting plate that ensures proper placement of the position limiter relative to the guide roller. The infeed assembly and outfeed assembly components may be easily moved into engagement and out of engagement to facilitate replacement, cleaning or maintenance.

Abstract: An adjustable bracket for alternator and related products, including an alternator that adjustably secures with the timing gear cover found on most vehicle engines, an offset mounting bracket securing with the gear cover, and having upwardly extending inclined arms, for connecting with the bottom of the alternator, and a tensioning arm also securing with the timing cover, having an integral bend upwardly towards its linear and arcuate portion, with the arcuate portions of the tensioning arm having a slot formed therein, through which an adjustment bolt secures with the upper part of the alternator, to allow for the alternator to be pivoted, about its offset mounting bracket, to apply the proper tensioning to its installed V belt, to attain its proper operations.

Abstract: The disclosed inventive concept provides an adjustable and lockable bracket assembly that allows a stretch fit belt to be installed loosely on the pulleys of an accessory drive system. The assembly includes a fixed bracket attached to the engine, a pivoting and lockable bracket attached to the fixed bracket and an adjustable driven unit, an adjustable arm for moving the adjustable driven unit between a “belt install” position allowing attachment of the belt and a “final” position for stretching the attached belt, and a rotatable insert having an offset threaded hole with a threaded fastener attached to the adjustable arm for moving the driven unit between the “belt install” and “final” positions. In the “belt install” position, the stretch fit belt may be fitted over the FEAD pulleys. Once in position, the rotatable insert is rotated to move the driven unit to the “final” position again via the adjustable arm.

Abstract: The invention relates to a device for locking at least one belt (10) at predetermined belt tension, which belt (10) is arranged at a machine arrangement (1) with belt drive. The machine arrangement comprises a stand (3) having legs (2) placed on a base (4). At least one driving pulley (5) and at least one driven pulley (6) are aligned relative to each other. The legs (2) being articulately attached to at least one of the stand (3) or the base (4), and at least two of the legs (2) comprises longitudinally adjustable tension legs (20), which each comprises a first tension leg part (21) having a wedge box (30) arranged to receive a wedge (31) having a grooved surface (32) and a second tension leg part (22) having a grooved surface (23) directed towards said wedge box (30).

Abstract: A chain tensioning device is basically provided with a main body, a chain guide, a rotary fluid damper unit and a rotational resistance adjustment device. The main body is configured to be mounted to a bicycle. The chain guide is pivotally coupled to the main body to rotate around a rotational axis with respect to the main body. The rotary fluid damper unit is operatively connected between the main body and the chain guide to provide rotational resistance to the chain guide around the rotational axis. The rotational resistance adjustment device is operatively connected to the rotary fluid damper unit to change a rotational resistance setting of the rotary fluid damper unit with the rotational resistance adjustment device in an operative state.

Abstract: A chain tensioning device is basically provided with a main body, a chain guide and a rotary fluid damper unit. The main body is configured to be mounted to a bicycle. The chain guide is pivotally coupled to the main body to rotate around a rotational axis with respect to the main body. The rotary fluid damper unit is operatively connected between the main body and the chain guide to provide rotational resistance to the chain guide around the rotational axis. The rotary fluid damper unit is a separate unit from the main body, the rotary fluid damper unit being detachably mounted on the main body.

Abstract: The present invention provides methods and systems for an adjustment device for allowing the expeditious adjustment of drive belts that includes a frame having at least one channel, a tab extending substantially perpendicularly from the longitudinal axis of the frame, and a boss rotationally disposed on the frame. A support member is disposed adjacent the frame and includes a bore for receiving an adjustment member having a first end and a second end, and the second end of the adjustment member is disposed in close proximity to the tab of the frame.

Abstract: A chain saw is provided with an adjustment mechanism that adjusts the tension of a saw chain 4 attached along a guide bar 3 projecting from a main body 2. The adjustment mechanism has a rotation shaft 55 that is provided with a feed screw, a moving element 70 that is moved on the rotation shaft 55 in an axial direction along with rotation of the rotation shaft 55 and moves the guide bar 3 forward/backward with respect to the main body 2, and a transmission mechanism including an internal gear 51 provided on an inner peripheral surface of an adjustment dial 50 rotatably provided on the main body 2 and an external gear 52 disposed on an inner side of the adjustment dial 50 and engaged with the internal gear 51. When the internal gear 51 is rotated along with rotation of the adjustment dial 50, the rotation shaft 55 is rotated via the external gear 52.

Abstract: A bicycle chain tensioner includes a bicycle mounting bracket, and a chain tensioning element. The bicycle mounting bracket is configured to be mounted to a bicycle. The chain tensioning element is movably coupled to the bicycle mounting bracket by a first coupling structure to move in a lateral direction and by a second coupling structure to move in a direction different from the lateral direction, during operation of the bicycle chain tensioner.

Abstract: A bicycle chain tensioner includes a bicycle mounting bracket, and a chain tensioning element. The bicycle mounting bracket is configured to be mounted to a bicycle. The chain tensioning element is movably coupled to the bicycle mounting bracket by a first coupling structure to move in a lateral direction and by a second coupling structure to move in a direction different from the lateral direction, during operation of the bicycle chain tensioner.

Abstract: The present invention discloses a drive apparatus for a rotor of a revolving door, wherein the drive apparatus comprises a drive device, which is motion-coupled to the rotor via a drive belt. The drive apparatus further comprises a tensioning device for tensioning and deflecting the drive belt, wherein the drive belt runs via the drive device and via the tensioning device. The tensioning device and/or the drive device are mounted with a variable distance between one another, so that an extension of the drive belt caused by acceleration or deceleration of the rotor is compensated by varying the distance between the tensioning device and the drive device.

Abstract: An engine includes an engine structure defining a plurality of cylinders. A crankshaft is rotatably mounted to the engine structure and a plurality of pistons are each disposed in a corresponding one of the plurality of cylinders and drivingly connected to the crankshaft. A drive pulley is drivingly connected to the crankshaft. An accessory is mounted to the engine structure and includes a driven pulley connected to the drive pulley by a belt. The belt has a load direction extending through an axis of rotation of the drive pulley and the driven pulley. The accessory includes a housing having two slots extending generally parallel to the load direction of the belt and each receiving a fastener therein. A tensioner bolt is located between the two slots and extends generally parallel to the load direction to apply a tension force on the housing in the load direction.

Abstract: An automatic tensioner includes a base, a rotary member to which a pulley around which a belt is wound can be attached, a coil spring including one end locked on the base and the other end locked on the rotary member, an elastic element including one end locked on one of the rotary member and the base and the other end which is a free end and extending along an inner circumferential surface of the other of the rotary member and the base, and a friction member connected so as to be brought into contact with the inner circumferential surface, wherein the coil spring is disposed in such a state that the coil spring is compressed in an axial direction and the friction member is pressed against the one of the rotary member and the base by a repulsive force attempting to expand in an axial direction.

Abstract: The present invention provides methods and systems for an adjustment device for allowing the expeditious adjustment of drive belts that includes a frame having at least one channel, a tab extending substantially perpendicularly from the longitudinal axis of the frame, and a boss rotationally disposed on the frame. A support member is disposed adjacent the frame and includes a bore for receiving an adjustment member having a first end and a second end, and the second end of the adjustment member is disposed in close proximity to the tab of the frame.

Abstract: An auto-tensioner includes: a stationary member having a first cylindrical portion; a rotatable member having a second cylindrical portion at least partially overlapping the first cylindrical portion in a radial direction; and a drainage mechanism provided at a boundary part of the first and second cylindrical portions, including a water inlet configured by a gap between an outer peripheral surface of the first cylindrical portion and an outer peripheral surface of the second cylindrical portion and being open along a peripheral direction, a water passage which is configured by a gap between a water collecting groove formed along the peripheral direction in the outer peripheral surface of one of the two cylindrical portions and the other cylindrical portion, and communicates with the water inlet, and at least one drainage port formed in a peripheral wall on an outside in the radial direction of the water passage

Abstract: A chainsaw includes a chainsaw body, a chainsaw bar configured to be operably coupled to a cutting chain, and a clutch cover disposed proximate to a portion of the chainsaw bar to facilitate clamping the chainsaw bar to the chainsaw body. The clutch cover may be configured to receive a tension sub assembly disposed at a portion of the clutch cover to enable both adjustment of chain tension in a first mode of operation and clamping of the chainsaw bar in a second mode of operation. The tension sub assembly may include a mode shift mechanism configured to move between a first position in which the tension sub assembly operates in the first mode and a second position in which the tension sub assembly operates in the second mode.

Abstract: A cleaner head includes a drive mechanism connecting a drive means to a rotatable brush member. The drive mechanism comprises an input drive member connected to the drive means, an output drive member connected to the rotatable brush member, and a flexible drive element extending therebetween. The drive mechanism is provided with an adjustment mechanism operable to vary the distance between the input and output drive members in order to vary the tension of the flexible drive element. The adjustment mechanism is movable in a first direction from a first position in which the flexible drive element has a relatively low tension through a plurality of further positions which increases the tension in the flexible drive element. The adjustment mechanism is lockable in a selected one of the plurality of further positions against movement in a direction opposite to the first direction.

Abstract: A tensioner (1) for a belt drive comprises a base(2, 3) defining an axis (A), a mobile element (4) hinged onto axis (A) and defining a guiding surface (22), an elastic helical element (18) having a square or rectangular cross section for actuating the mobile element (4) and an idle pulley (5) surrounding the guiding surface (22). The tensioner (1) further comprises a journal bearing (4, 29, 32, 33) for supporting the pulley (5) on the guiding surface (22).

Abstract: An improved drive assembly is described which can apply a pure torque to a driven member while allowing for limited motion of the driven member in the radial direction. This drive assembly is particularly suitable for converting an Internal Combustion (IC) vehicle to an IC-electric hybrid vehicle comprising installation of one or two electric motors coupled to a drive shaft of the vehicle via the drive of this invention such that the electric motor can provide some or all of the mechanical power required to propel the vehicle while accepting some relative motion between the existing vehicle drive shaft and the motors. The improvement consists of interlocked idler rollers mounted so as to reduce dynamic loads on the drive at high speeds, thus reducing noise and vibration.

Abstract: Transmission device for self-propelled equipment, includes a housing having a driving input shaft transmitting movement to an output shaft, the input shaft bearing a receiving pulley around which pulley a belt transmission is wrapped. The input shaft also bears a component that rotates as one with the shaft and a member for controlling the movement of the pulley along the input shaft in terms of the pulley movement towards or away from the component so that the pulley, which is mounted with freedom to rotate on the input shaft, can be moved from a disengaged position when it is away from the component, into an engaged position when it is close to the component, the pulley having a groove of constant predetermined width for accepting the belt so that when the belt is taut inside the groove, the belt tension is maintained as the pulley moves along the input shaft.

Abstract: A drive unit comprising a guide channel that has a first pulley at one end that rotates about a fixed pulley axis. The drive unit also includes a flexible drive member having a plurality of spaced windows, an attachment assembly moveably attached to the guide channel, and an adjustable pulley assembly coupled to the guide channel that has a second pulley that rotates around a moveable pulley axis that can be adjusted to change the distance between the fixed pulley axis and the moveable pulley axis to take up slack in the flexible drive member.

Abstract: A device and method of use of that device to automatically adjust the tension of a belt(s) used in a driven system is disclosed. The system includes at least one driving device or power source and at least one driven device. The system further includes a tensioning member that serves to continuously compensate for slack which naturally develops in the belt or belts during normal operation of the system, as well as preloading the device with the appropriate amount of tension. The device provides a manually operated adjustment which allows for user control of the tensioning member, as well as an indicator which displays the amount of elongation of a belt and/or the desired preloaded tension of the system, thus simplifying removal, application, and replacement of belts, etc.

Abstract: A tensioner (1) for a belt drive comprises a base(2, 3) defining an axis (A), a mobile element (4) hinged onto axis (A) and defining a guiding surface (22), an elastic helical element (18) having a square or rectangular cross section for actuating the mobile element (4) and an idle pulley (5) surrounding the guiding surface (22). The tensioner (1) further comprises a journal bearing (4, 29, 32, 33) for supporting the pulley (5) on the guiding surface (22).

Abstract: A tensioner operable to substantially maintain a specified tension in a flexible drive, such as a belt or chain, includes a spring, mounted laterally to the pivot shaft of the tensioner, which biases the tensioner arm towards the flexible drive. The spring is arcuate in shape and is maintained in a correspondingly arc-shaped spring retainer on a mounting plate of the tensioner. The arcuate shape of the spring and spring guide on the tensioner arm follows as the tensioner arm pivots towards and away from the flexible drive. The tensioner also has a wear take up mechanism to maintain the friction bushing in continuous engagement with the tensioner arm.

Abstract: An automatic tensioner includes a base, a rotary member to which a pulley around which a belt is wound can be attached, a coil spring including one end locked on the base and the other end locked on the rotary member, an elastic element including one end locked on one of the rotary member and the base and the other end which is a free end and extending along an inner circumferential surface of the other of the rotary member and the base, and a friction member connected so as to be brought into contact with the inner circumferential surface, wherein the coil spring is disposed in such a state that the coil spring is compressed in an axial direction and the friction member is pressed against the one of the rotary member and the base by a repulsive force attempting to expand in an axial direction.

Abstract: The proposal is for a switchable friction clutch having a drive wheel (5) driven by a drive motor via a drive belt, wherein a first electromagnet arrangement (19) is provided for actuating a first friction clutch (21), and a second electromagnet arrangement (24) is provided for actuating a second friction clutch (23) in order to be able to drive a drive shaft (13) of an auxiliary unit (3) at different rotational speeds via the drive wheel (5) at one rotational speed of the drive wheel. According to the invention, a belt drive arrangement is provided between the drive wheel (5) and the drive shaft (13) of the auxiliary unit (3) to drive the drive shaft (13) at the different speed.

Abstract: A belt tensioning system configured to more effectively maintain the proper tension in a belt that can be engaged and disengaged. Proper tension in the belt is maintained even if the belt stretches or contracts by including a spring biased member between a tension wheel and a pivot frame. The spring member is preloaded such that when the belt stretches the tension wheel is biased against the belt by the force of the spring. Also, by selectively engaging the tension system one can avoid overloading the engine without the need to incorporate a clutch.

Abstract: A wireline hay pulley has a support with front and back plates extending therefrom. A sheave disposed between the plates can rotate on an axle. The front plate is affixed to the support, while the back plate is removably connected to the support. The front plate has a round opening in which an eccentric bushing on the axle can rotate. When the back plate is disconnected from the support, the back plate can turn the axle fixed in a slotted opening. An eccentric bushing on the axle rotates in an opening of the front plate, thereby shifting the sheave away from the support. With the back plate moved away and the sheave shifted downward, an operator can readily rig up a wireline in the sheave's slot.

Abstract: A tensioner comprising a base, a pivot arm pivotally engaged with the base, a torsion spring engaged between the base and the pivot arm for biasing the pivot arm, a first damping member and a second damping member disposed between the pivot arm and the base, the first damping member wedgingly engagable between the pivot arm and the second damping member, and the second damping member frictionally engaged between the first damping member and the base.

Abstract: A bicycle component calibration device and method are provided that assist the user in determining that an adjustment was made. Basically, when a calibration command in inputted to indicate a selected adjustment amount in a selected adjustment direction, the bicycle component (e.g., a derailleur) initially moves farther than the selected adjustment amount in a first direction by an adjustment indicating amount in response to the calibration command, and then subsequently moves the bicycle component in a second direction to the selected adjustment position in which the second direction is opposite to the first direction. The adjustment indicating amount is greater than the selected adjustment amount of the calibration command. Finally, the selected adjustment position is set as an adjusted position of the bicycle component.

Abstract: A method and system for verifying the spatial and coplanar alignment of a number of power transmission pulleys, particularly as used with an automotive internal combustion engine. A planar light source is provided at a reference location associated with the power transmission pulleys, and an illumination plane emitted by the planar light source is allowed to impinge upon the pulleys. Then, correct alignment of the pulleys is determined by comparing the locus of the intersection of the illumination plane with at least one of the pulleys with a locus of intersection of the illumination plane with another of the pulleys.

Abstract: A belt driving apparatus includes: a drive pulley that is attached to an output shaft of a drive motor and has teeth formed on the outer peripheral surface thereof; a driven pulley that is spaced apart from the drive pulley; an endless belt that is wound between the drive pulley and the driven pulley and is configured of a timing belt; a tension pulley that is provided on an upstream side in the vicinity of the drive pulley and comes in contact with the outer peripheral surface of the endless belt on an upstream side to apply tension to the endless belt; and a winding angle maintaining member that is provided on a downstream side in the vicinity of the drive pulley and on the side of the outer peripheral surface of the belt to maintain the winding angle of the endless belt with respect to the drive pulley.

Abstract: A pulley assembly of the invention is adapted to impart torsion spring capability between an inside member and an outside member by means of a simple structure. By virtue of the torsion spring capability, the pulley assembly can effectively reduce the variation of belt tension exerted on a pulley portion disposed at either one of the inside member and the outside member, the variations of rotational speed and the like.

Abstract: A variable tensioner according to an exemplary embodiment of the present invention may include: a base, an arm including a boss and a mounting portion, wherein the boss is co-axially and rotatably coupled to the base and a pulley is coaxially and rotatably mounted to the mounting portion, the arm forming an elastic member insert recess with the base, an elastic member mounted in the elastic member insert recess, one end of the elastic member fixed to the base and the other end of the elastic member fixed to the boss, and a tension actuator deforming a portion of the elastic member according to signal of an engine control unit.

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: The invention is an improved power transmission belt tensioner of the type having a first pulley adapted to communicate with a surface of a power transmission belt, a first arm supporting the first pulley upon which the first pulley is rotatably mounted via a first pulley bearing, a second pulley adapted to communicate with a surface of the power transmission belt, a second arm supporting the second pulley upon which the second pulley is rotatably mounted via a second pulley bearing. It is improved by the inclusion of a strut, a first attachment point for the strut, and a second attachment point for the strut, with the strut attached to the first and the second attachment points. The first arm is rotatably supported at a first pivot. The second arm is rotatably supported at a second pivot. The first pulley and the first attachment point are each laterally offset in relation to the first pivot and substantially balanced in terms of parasitic torque across the first pivot.

Abstract: A drive assembly for a closed loop cable system in which a flexible driver member drives a door or the like back and forth has the flexible drive member wrapped around and driven by a drive pulley. The drive assembly includes a motor unit having a motor shaft that rotates about a drive axis for rotating the drive pulley about a pulley axis, and a tensioning mechanism for adjusting the position of the pulley axis with respect to the drive axis responsive to tension in the flexible drive member.

Abstract: A belt tensioner for a power transmission belt is provided that utilizes asymmetric motion control and is operable in a first condition and a second condition. The belt tensioner has an arm with a belt engaging section and a drum section, a support member for securing the tensioner relative to the belt, and a spring that urges the arm to pivot about the support member in a first direction and urges the belt engaging section against the belt with a force to tension the belt. The tensioner also has a stator coupled to the support member to form arcuate spaces circumferentially spaced around the stator between the stator and the drum section and arcuate shaped wedges in the arcuate spaces. The tensioner further has a Belleville spring coupled to the arm for pivoting therewith and a friction device in sliding contact with the wedges and Belleville spring.

Abstract: A door driving-mechanism torque transmission (20, 40, or 50) for transmitting torque from a door-driving motor assembly, especially a geared motor (36), to a shaft (33) connected to a door panel (31). A driving component rotates around an axis and can be engaged with the door-driving motor assembly. A driven component rotates around another axis and can be engaged with the shaft. A bearing assembly accommodates both components mounted on separated axes of rotation. There is a coupling connection (2) between both components. The object is to promote smooth operation and decrease frequency of repair. The bearing assembly (4 or 51) is accordingly provided with a driving-component bearing half (5 or 52) that the driving component (1) is mounted on and with, separated therefrom, a driven-component bearing half (6 or 53) that the driven component (3) is mounted on. The bearing halves (5 & 6 or 52 & 53) are connected elastically for the purpose of attenuating torsional vibrations and impacts.

Abstract: A power transmission device is disclosed which is capable of easily, swiftly and appropriately altering the distance between the axes of a pair of transmission wheels such as pulleys, enabling an endless belt to be kept under constant and appropriate tension without necessitating a tension roller. This power transmission device comprises an endless belt wound around a pair of transmission wheels; and a cam-type adjusting mechanism which is interposed between a driving side supporting member and a driven side supporting member and configured to adjust a distance between the axes of the wheels. This cam-type adjusting mechanism comprises a supporting shaft secured to either the driving side supporting member or the driven side supporting member and disposed parallel to the rotational axes of the wheels; and a cam rotatably secured via a manipulating boss member to the supporting shaft.

Abstract: The current manufacturing practice in the recreational boating industry is to align and couple a singular inboard engine to a singular impeller drive. The disclosed invention is a power transmission device that allows for coupling of a singular engine to one or more impeller drives. The invention can provide a single engine watercraft with the advantages of a twin-engine watercraft, but at half the complexity and half the weight of a twin-engine installation. The present invention can also be employed for the installation of a larger high performance engine while powering standard low cost impeller drives, and without fear of loss in reliability, or even in a multiple fashion, within a multi-engine watercraft, allowing for various options such as closer placement of the impeller drives without the staggering of engines.

Abstract: A tensioning device includes an adjustable tensioning arm having first and second opposed ends, a first mounting bracket secured to the first end of the adjustable tensioning arm, and a second mounting bracket pivotally connected to the second end of the adjustable tensioning arm. The adjustable tensioning arm includes a middle member having first and second opposed ends, a first end member engaged with and extending from the first end of the middle member and a second end member engaged with and extending from the second end of the middle member.

Abstract: A silent chain transmission mechanism includes a sprocket and a silent chain having link interleaved link rows each composed of plural randomly selected link plates and connected together by connecting pins. The outside dimensions of the link plate are smaller than the outside dimensions of a link, but the outside dimensions of the link match the design reference dimensions of a link plate capable of proper meshing with the sprocket. The requirement for manufacturing accuracy and the effort required for assembly of the silent chain are reduced. However, the silent chain travels on the sprocket on the chain traveling line so that improved noise, vibration and friction properties, and traveling stability are realized.

Abstract: A system and method for tensioning a belt drive in a remotely controlled video camera is provided in which the belt drive tensioning system has an accessory pulley. A receptacle has a substantially circular opening and an extension. The extension is disposed partially around a periphery of an end of the circular opening and projects partially over the opening. A drive pulley is substantially coplanar with the accessory pulley. A housing has a body wall, a first longitudinal axis and a substantially circular tab provided at an end region of the body wall. The substantially circular tab has a second longitudinal axis which is parallel and eccentric to the first longitudinal axis. A drive pulley is substantially coaxially aligned along the first longitudinal axis and is rotatably coupled to the housing. The housing is configured to engage the receptacle in a first position where the drive pulley is at a first distance from the accessory pulley.

Abstract: The invention comprises a tensioner having a pulley journaled to a housing. The housing further comprises a guide. The guide slidingly engages rails on a base. The guide and rails constrain the housing to move in a predetermined linear path. The rails are horizontally offset from two axis defined by the pulley. The pulley load is also vertically offset from the axis of movement of the guide. The guide and rails have a predetermined frictional coefficient so that the cumulative result is an asymmetric damping effect. Further, a linkage is connected between the housing and a camming body. The camming body is rotatably connected to the base. A biasing member such as a torsion spring biases the camming body against the belt load through the linkage. The radius of the camming body is variable to maintain a constant belt load as the tensioner pulley moves in response to a load change.

Abstract: In a multi spindle drive belt tensioning assembly a motor is mounted to a frame and the drive pulley is coupled for rotation to the motor shaft. At least two driven pulleys are each coupled to a driven member rotatably mounted to the frame. The driven pulleys are spaced apart relative to one another and at least one belt is in engagement with the drive pulley and each of the driven pulleys. In either pulley is rotatably coupled to the frame between two of the driven pulleys and engageable with the belt. The idler pulley is movable relative to the belt to increase or decrease the tension thereof and the degree of engagement between the belt and the driven pulleys. The idler pulley is adjustable relative to the belt to allow a desired belt tension in engagement between the belt and the driven pulleys such that the belt extends approximately 180 degrees around the circumference defined by each of the driven pulleys.

Abstract: An improved belt tensioner for a refrigerant compressor mounted on a plate of a bus engine compartment, the compressor being operated by a power take off from the engine via a belt drive, the belt tensioner being flange mounted with a single plate attached to a single screw drive bolt, the plate being pushed against the compressor a predetermined and preset distance as determined by markers on a spring tension gauge mounted in between the single plate and the flange wherein the flange is fixed to the plate.