Abstract: A turret includes a rotary bearing with an inner race, an outer race and a central axis of rotation. An internal tooth drive sprocket is fixed to the outer race of the bearing and centered on the central axis of rotation of the bearing. A turret plinth is fixed to the inner race of the bearing. A drive mechanism for rotating the turret plinth with respect to the internal tooth drive sprocket includes first and second sprocket assemblies each having a pair of upper and lower external tooth sprockets fixed to a shaft. The middle chain row of a triple roller chain engages the internal tooth drive sprocket. One of the outer chain rows engages the upper sprockets of the first and second sprocket assemblies and the other of the outer chain rows engages the lower sprockets of the first and second sprocket assemblies. Hand wheels connected to the shafts of the sprocket assemblies provide input motion to the drive mechanism.

Abstract: A rope of a lifting device, more particularly of a passenger transport elevator and/or freight transport elevator, an elevator, and a method for manufacturing the rope are disclosed. The rope includes an unbroken load-bearing part, the profile of which is essentially of rectangular shape, and the width of the cross-section is greater than the thickness and which load-bearing part comprises glass fiber reinforcements and/or aramid fiber reinforcements and/or carbon fiber reinforcements and/or polybenzoxazole fiber reinforcements and/or polyethylene fiber reinforcements and/or nylon fiber reinforcements in a polymer matrix material. The long sides of the cross-section of the load-bearing part include one or more grooves symmetrically or asymmetrically in the longitudinal direction of the rope, which grooves divide the load-bearing part into smaller parts.

Abstract: A distributed drive includes a frame, a main sprocket, and a plurality of drive assemblies mounted therearound for rotation of the main sprocket. The main sprocket has a circumferential drive rim around which the drive assemblies are mounted in driving engagement with the drive rim so as to selectively rotate the main sprocket relative to the frame. Each drive assembly includes at least two auxiliary sprockets lying substantially in the plane of the main sprocket. An endless belt is mounted around the auxiliary sprockets so that a span of the endless belt spans between a pair of the auxiliary sprockets in an arc-of-contact with the drive rim. At least one of the two auxiliary sprockets is a selectively driven drive sprocket for selective rotation of the main sprocket.

Abstract: A vehicle has a motor-gear unit, a trailing wheel of the vehicle being connected the output shaft of the gear and an input shaft of the gear being connected to a motor. The gear has an outer wheel, an inner wheel and a traction means extending between the outer wheel and the inner wheel. A revolving transmitter is also provided which lifts the traction means off the outer periphery of the inner wheel and pushes it against the inner periphery of the outer wheel.

Abstract: An energy harvesting system comprises a first region having a first temperature and a second region. A conduit is located at least partially within the first region. A heat engine configured for converting thermal energy to mechanical energy includes a shape memory alloy forming at least one generally continuous loop. The shape memory alloy is disposed in heat exchange contact with the first region and the second region. The shape memory alloy is driven to rotate around at least a portion of the conduit by the response of the shape memory alloy to the temperature difference between the first region and the second region. At least one pulley is driven by the rotation of the shape memory alloy, and the at least one pulley is operatively connected to a component to thereby drive the component.

Abstract: A timing belt spacer tool with an arcuate spacer portion of predetermined uniform thickness and an extension tab extending in an axial direction from the mid-section of the spacer portion. The extension tab may have a grip, which may be in the form of a protrusion, bulge, thickness variation, edging, bead, or the like. The opposing ends of the arcuate spacer portion may be flexible enough to be straightened in use but still return to their original arcuate shape.

Abstract: A power transmission belt (10) includes: a belt body (11) including a part (14) which is in contact with a flat pulley and which is made of a rubber composition containing an ethylene-?-olefin elastomer with an ethylene content of less than or equal to 60% by mass as raw rubber. The rubber composition forming the contact part (14) with the flat pulley has a storage modulus of 20-60 MPa at 25° C. and a storage modulus of 12 MPa or more at 100° C., short fibers are not blended into the rubber composition, and the grain direction of the rubber composition corresponds to a belt lengthwise direction.

Abstract: An object of the present invention is to provide a chain guide superior in silence, which includes: a guide base extending in a traveling direction of a chain; a plurality of roller shafts attached to the guide base at an interval along the traveling direction of the chain; and rollers each rotatably supported by one of the roller shafts. The roller has a cylindrical outer circumferential surface for guiding the chain. The outer circumferential surface of the roller has a cylindricity not greater than 20 ?m.

Abstract: A cam actuated hydraulic brake system and an in plane tensioner pulley belt drive system may be used on autonomous vehicles, such as dynamic motion elements for the evaluation of various crash avoidance technologies. The brake system utilizes a cam driven by a servo to push the piston push rod of a hydraulic master brake cylinder, thus distributing pressurized brake fluid throughout the brake system. The pulley drive system uses an articulating arm for the driven pulley, and that arm may also have connected to it one or two tension pulleys, each of which is in contact with the belt. Because the drive pulley and the tensioner pulleys pivot about the same pivot axis, the needed belt length remains nearly constant across the entire range of the articulating arm.

Abstract: An emergency braking system for use in connection with a drive apparatus including a drive belt and pulley system for transferring power from a prime mover to a transmission or transaxle. The braking system includes a pulley engaged to the drive belt and a spring engaged to the pulley to provide a bias force thereto. When tension from the belt is removed from the pulley, the spring forces the pulley into engagement with an actuator to engage a brake mechanism.

Abstract: A distributed drive includes a frame, a main sprocket, and a plurality of drive assemblies mounted therearound for rotation of the main sprocket. The main sprocket has a circumferential drive rim around which the drive assemblies are mounted in driving engagement with the drive rim so as to selectively rotate the main sprocket relative to the frame. Each drive assembly includes at least two auxiliary sprockets lying substantially in the plane of the main sprocket. An endless belt is mounted around the auxiliary sprockets so that a span of the endless belt spans between a pair of the auxiliary sprockets in an arc-of-contact with the drive rim. At least one of the two auxiliary sprockets is a selectively driven drive sprocket for selective rotation of the main sprocket.

Abstract: A chain guide having a mounting bracket mounted to the bottom bracket shell with multiple coaxial pulleys, each of which is in substantially planar alignment with one chainring of a crank with two or more chainrings. Each pulley cog engages the bicycle chain when the chain is on a corresponding chainring. One of the pulley cogs can be replaced by a roller mounted to the bracket coaxially with the first pulley cog and in substantially planar alignment with the corresponding chainring.

Abstract: An emergency braking system for use in connection with a drive apparatus including a drive belt and pulley system for transferring power from a prime mover to a transmission or transaxle. The braking system includes a pulley engaged to the drive belt and a spring engaged to the pulley to provide a bias force thereto. When tension from the belt is removed from the pulley, the spring forces the pulley into engagement with an actuator to engage a brake mechanism.

Abstract: An energy harvesting system comprises a first region and a second region having a temperature difference therebetween. A plurality of heat engines are located proximate to the conduit and configured for converting thermal energy to mechanical energy. The heat engines each include a shape memory alloy forming at least one generally continuous loop. The shape memory alloy driven to rotate by heat exchange contact with each of the first region and the second region. At least one pulley for each of the plurality of heat engines is driven by the rotation of the respective shape memory alloy, and each of the at least one pulleys is operatively connected to a component to thereby drive the component.

Abstract: An energy harvesting system comprises a first region having a first temperature and a second region. A conduit is located at least partially within the first region. A heat engine configured for converting thermal energy to mechanical energy includes a shape memory alloy forming at least one generally continuous loop. The shape memory alloy is disposed in heat exchange contact with the first region and the second region. The shape memory alloy is driven to rotate around at least a portion of the conduit by the response of the shape memory alloy to the temperature difference between the first region and the second region. At least one pulley is driven by the rotation of the shape memory alloy, and the at least one pulley is operatively connected to a component to thereby drive the component.

Abstract: A power transmission belt (10) includes: a belt body (11) including a part (14) which is in contact with a flat pulley and which is made of a rubber composition containing an ethylene-?-olefin elastomer with an ethylene content of less than or equal to 60% by mass as raw rubber. The rubber composition forming the contact part (14) with the flat pulley has a storage modulus of 20-60 MPa at 25° C. and a storage modulus of 12 MPa or more at 100° C., short fibers are not blended into the rubber composition, and the grain direction of the rubber composition corresponds to a belt lengthwise direction.

Abstract: The present invention deals with a new system for transmitting energy through a cable (2) and interconnected pulleys (1, 3, 5). The traditional power transmission through pulleys sizes the system of belts and friction surfaces depending on energy to be transmitted and is obtained through systems composed of a rotary element for every point of application and of a flexible element for the connection. In the proposed system, the flexible element is a high-resistance cable (2) and friction on the rotary element is increased by using interconnected pulleys, which increase the cable friction surface allowing power transmissions without any sliding till the cable breaking point. The lightness of such system allows it to find optimum application in transmitting to ground all wind energy produced at an upper level. The system of interconnected pulleys (1, 3, 5) is further applied to discontinuous tractions in the sailing field, replacing the traditionally used winches.

Abstract: In a drive belt system, an idler pulley 6 is formed by an auto belt alignment pulley. For example, a pulley body 60 is rotatably carried on a hollow cylindrical shaft member 62, a support rod 63 is inserted in the shaft member 62, and the pulley body 60 and the shaft member 62 are connected to each other via a pin 64 (pivot axis C2) for angular movement about the pin 64. The pin 64 is inclined orthogonally to the shaft member 62 and forward in the direction of rotation of the pulley body 60 with respect to the direction of a radial shaft load L. With this configuration, when a flat belt 8 deviates to one side, the pulley body 60 inclines to create a level difference in the direction of the radial shaft load L and angularly moves orthogonally to the flat belt 8, thereby correcting the deviation of the flat belt 8. To fulfill the auto belt alignment function, belt span lengths Si and So between the idler pulley 6 and both the adjacent pulleys 3 and 4 are each set larger than the width of the flat belt 8.

Abstract: A belt driving device is provided and includes a plurality of rollers including a driving roller. A belt is configured to be tensioned by the plurality of rollers, and to be driven by the driving roller. The driving roller is arranged adjacent to where an outside body contacts an outer surface of the belt. A pair of fluctuation absorbing members may be configured to absorb tensional fluctuation of the belt at an upstream and a downstream of a cleaning member in a direction which the belt is driven. A detecting means may be utilized to detect a driving load of one of the driving roller and the outside roller and a controller is configured to drive another roller of the driving roller and the outside roller based on the driving load detected by the detecting means. An outside roller may be configured to contact an outer surface of the belt and to be driven by a second motor; a controller configured to control the second motor by a less loop gain than a loop gain to control the first motor.

Abstract: An apparatus for abrading a surface is provided. The apparatus has a compact profile and includes a drive mechanism disposed in a housing. The drive mechanism includes a substantially vertical drive shaft rotatably mounted on a first plate and including a drive pulley mounted on the shaft. The drive pulley is rotatably connected to at least one coplanar pulley mounted on a substantially vertical shaft and disposed between the first plate and a second plate attached substantially parallel to the first plate. Thus, use of the apparatus in height-restricted spaces is facilitated.

Abstract: A hollow cylindrical pulley body 5 is carried rotatably by a hollow cylindrical shaft member 11. A support rod 8 is inserted in the shaft member 11 to support the shaft member 11 for rocking motion about a pivot axis C2 orthogonal to the shaft member 11. The pivot axis C2 is inclined backward in the direction of belt travel with respect to the direction of load on the shaft member 11. With this configuration, when the drive belt 3 deviates to one side, the pulley body 5 is immediately angularly moved so that it is inclined with a level difference with respect to the direction of load on the shaft member 11 and is positioned obliquely relative to the drive belt 3, thereby producing a force of returning the drive belt 3 to its normal position.

Abstract: A belt drive for a secondary unit of an internal combustion engine includes a friction wheel drive having a friction wheel, a cam device for adjusting the engagement of the friction wheel to the drive wheel of the secondary unit, the cam device having a cam, a swivel arm by which the friction wheel is connected to the cam which is rotationally mounted on a side of the engine, and a spring biasing the swivel arm in a tension direction. The friction wheel is in permanent position of frictional engagement with a drive wheel of the secondary unit to drive the secondary unit and with an outside of a belt on a drive wheel of the internal combustion engine or of another secondary unit.

Abstract: A belt drive for a machine for printing images on a flat printing material, having a continuous belt revolving during operation, includes a belt guide having stops for two protruding edges of the belt, the edges being oriented in a longitudinal direction of the belt and opposite one another in a transverse direction of the belt; and a machine for printing images on flat printing material having such a belt drive.

Abstract: A belt driving apparatus has a motor for generating the driving force, a toothed driving pulley rotating by the driving force, an endless toothed belt wound on the pulley, wherein a first surface of the toothed belt has teeth corresponding to teeth of the pulley and a second surface of the toothed belt is substantially smooth, an auxiliary roller for holding the toothed belt in a gap defined by the pulley and the auxiliary roller, a roller holding unit for holding the pulley and the auxiliary roller to be able to respectively rotate on axes of the pulley and the auxiliary roller and maintaining the gap between the pulley and the auxiliary roller and an urging member for urging the roller holding unit in a direction to the toothed belt around the pulley in order for the auxiliary roller hold by the roller holding unit to provide a tension to the toothed belt.

Abstract: An infinite variable transmission with input shaft (52), planetary carrier (28), planetary pulleys (36) and planetary gears (32) with planetary axles (30) equiangularly disposed on the carrier (28). Variable pitch pulley (41) adjust a serpentine belt (38) which adjust the rotation of the planetary gears (32) to adjust the output shaft (20).

Abstract: The invention relates to a mechanical transmission, which transmission includes guide members for realizing a rotational translating movement of a wheel which is connected to an output shaft and which makes contact with an endless belt of mutually abutting push links, which guide members are assembled from at least two linear guide tracks received mutually perpendicularly in the same plate and guide elements co-acting with the linear guide tracks, wherein guide elements are connected to the wheel for rotational translation and guide elements are rigidly connected to the frame whereby the plate is movable in linear manner relative to the frame and the wheel is displaceable in linear manner relative to the plate.

Abstract: A break away operating cord system for retractable coverings for architectural openings such as windows, doors, arches or the like includes a mounting plate to which an operating cord is attached and wherein the mounting plate is releasable from the remainder of the control system for the retractable covering allowing the operating cord to be separated from most of the covering to avoid injury to a child or infant whose head might be trapped within the closed operating cord loop.

Abstract: A positively controlled raising cylinder raising machine, having a plurality of raising cylinders, circumferentially arranged on a rotary framework, a toothed driving belt for driving the raising cylinders being engaged with a portion of the toothed circular periphery of the raising cylinder, said toothed driving belt being driven by a transmission toothed pulley arranged around a central portion of a circumference defined by the circular periphery of the raising cylinders and operatively coupled to a driving motor, the raising cylinder driving belt being moreover engaged with a pair of switching pulleys holding the driving belt tensioned, the switching pulleys being arranged inside the circular periphery of the raising cylinders on opposite sides of said transmission toothed pulley and near the transmission toothed pulley.

Abstract: In a system for adjusting the tension of an endless transmitting belt in an internal combustion engine, a control system automatically adjusts the tension to be applied from a tensioner to the endless transmitting belt. The control system includes a driving-side rotational state detecting device for detecting the rotational state of a driving wheel which drives the endless transmitting belt. A driven-side rotational state detecting device detects the rotational state of a driven wheel driven by the endless transmitting belt. A control unit calculates a difference in rotational phase between the driving and driven wheels from results of detection by both rotational state detecting devices and controls the operation of a tension changing device in accordance with the difference in rotational phase. Thus, it is possible to accurately and quickly accommodate a very small variation in tension of the transmitting belt without specially using a strain gauge.

Abstract: The combination of an endless power transmission belt construction and a pulley therefor, the belt construction and methods of making the same are provided, the belt construction having opposed inner and outer surfaces with one surface defining a plurality of longitudinally disposed and alternately spaced apart like projections and grooves that are adapted to mesh with a ribbed surface of one pulley, and a planar surface adapted to operate on a planar surface of another pulley, wherein the planar surface of the belt construction comprises a polymeric material. The polymeric material of the planar surface provides a greater tractive force on the planar surface of the pulley. The planar surface further provides means to prevent abrasive particles accumulating thereon, thereby reducing wear upon the planar surface of the pulley.

Abstract: Drive apparatus (2) for a cycle (4), which drive apparatus (2) comprises a frame (6), a motor (8), a first pulley (10) which is driven by the motor (8), a second pulley (12), and an endless belt (14) which passes around the two pulleys (10, 12) and which is driven by the first pulley (10), the drive apparatus (2) being such that during use the belt (14) as in driving engagement with a tire (16) of a wheel (18) of the cycle (4), and the drive apparatus (2) being such that during use the first pulley (10) does not engage the tire (16).

Abstract: The combination of an endless power transmission belt construction and a pulley therefor, the belt construction and methods of making the same are provided, the belt construction having opposed inner and outer surfaces with one surface defining a plurality of longitudinally disposed and alternately spaced apart like projections and grooves that are adapted to mesh with a ribbed surface of one pulley, and a planar surface adapted to operate on a planar surface of another pulley, wherein the planar surface of the belt construction comprises a polymeric material. The polymeric material of the planar surface provides a greater tractive force on the planar surface of the pulley. The planar surface further provides means to prevent abrasive particles accumulating thereon, thereby reducing wear upon the planar surface of the pulley.

Abstract: A vibration proofing system for an engine timing chain utilizes a tensioner on the slack side of the chain path, in which a ring-shaped, chain-engaging shoe is rotatably disposed on a circular frame mounted on the piston of a tensioner mechanism, and in which the shoe surrounds the frame and tensioner mechanism. Engine oil, which is used in the tensioner, is supplied from the tensioner to lubricate the rotatable chain-engaging shoe. On the tension side of the chain path, a guide includes fixed support, a first ring rotatable on the support, and a ring-shaped, chain-engaging shoe which is in off-centered relationship to the support and the inner diameter of which is larger than the outer diameter of the first ring. Engine oil is supplied through the support to lubricate the first ring.

Abstract: A vibration proofing system for an engine timing chain utilizes a tensioner on the slack side of the chain path, in which a ring-shaped, chain-engaging shoe is rotatably disposed on a circular frame mounted on the piston of a tensioner mechanism, and in which the shoe surrounds the frame and tensioner mechanism. Engine oil, which is used in the tensioner, is supplied from the tensioner to lubricate the rotatable chain-engaging shoe.

Abstract: An automatic tensioner apparatus comprising an idler pulley engaging a transmission belt of a wrapping connector type transmission mechanism, an arm for swingably supporting the idler pulley with respect to a predetermined supporting surface, and a resilient member for exhibiting a resilient force for swinging the arm and the idler pulley in a direction to engage the transmission belt in order to apply a predetermined tension to the transmission belt. A casing for accommodating the resilient member is secured to the supporting surface and an arm pivot-supporting portion for swingably supporting a base portion of the arm is integrally provided on the casing in such a manner that the arm pivot-supporting portion is offset relative to the resilient member in a direction along the supporting surface and relative to the resilient member in a direction away from the supporting surface.

Abstract: The combination of an endless power transmission belt construction and a pulley therefor, the belt construction and methods of making the same are provided, the belt construction having opposed inner and outer surfaces with one surface defining a plurality of longitudinally disposed and alternately spaced apart like projections and grooves that are adapted to mesh with a ribbed surface of one pulley, and a planar surface adapted to operate on a planar surface of another pulley, wherein the planar surface of the belt construction comprises a polymeric material. The polymeric material of the planar surface provides a greater tractive force on the planar surface of the pulley. The planar surface further provides means to prevent abrasive particles accumulating thereon, thereby reducing wear upon the planar surface of the pulley.

Abstract: A drive apparatus, able to perform positioning of a driven object to be driven with a high degree of accuracy, sufficiently obtain the desired thrust even when using the low output of a driving source such as a motor, and allow the speed of movement of the driven object to be set as desired, is provided. This drive device, wherein a first belt-shaped member, to which driving force is applied with a driving source such as a motor, is engaged with a driven object to move said driven object, is equipped with a speed reduction function that functions by mounting a rotating body having a large diameter portion and a small diameter portion onto said driven object, engaging this large diameter portion with a belt-shaped member, stretching another belt-shaped member parallel to said belt-shaped member, engaging this belt-shaped member with the above-mentioned small diameter portion, and setting the ratio of the diameters of the above-mentioned large diameter and small diameter portions as desired.

Abstract: A drive power mission system having a driving pulley, a plurality of driven pulleys, and the power transmission belt laid in a serpentine manner over the pulleys. The driving pulley and at least one driven pulley, which are in contact with the inner surface of the power transmission belt, have a plurality of V-grooves arranged circumferentially. The V-groove fits to ribs formed on the inner surface of the belt, and the remaining pulley or pulleys, which are engaged with the outer surface of the power transmission belt have a plurality of protrusions arranged in parallel and circumferentially. The protrusions engage the outer surface of the belt, which is flat, and the power transmission belt is an endless belt having a plurality of ribs arranged longitudinally thereof. The ribs are substantially equal in section along the widthwise direction of the belt and the outer surface of the belt is flat.

Abstract: In a device for connecting and disconnecting hoses or pipes to and from difficultly accessible structures such as under water, it is aimed at providing a reliable device, which will be easy to operate, lends itself to repeated connecting and disconnecting of the hoses or pipes, also if necessary by remote control, and which is to a considerable extent selfcleaning. To this end the device has a movable supporting structure for carrying the hose or tube by engaging a freely rotatable end part thereon and an endless chain slung around a driving pinion and around two other chain pinions in the device, which latter pinions are positioned one to each side of the hose or pipe, are movable towards and away therefrom and are urged away therefrom. The chain is slung around part of the periphery of said part to engage a gear ring thereon with its run between the said two other chain pinions.

Abstract: The crankshaft of an internal combustion engine is supported in a split bearing assembly near one end of the crankshaft, with the lower half of the bearing assembly formed in a bearing holder secured to the engine block. An arcuate flange projects axially towards that end of the crankshaft. The flange underlies a crankshaft pulley which drives a timing belt. The arcuate surface of the flange is struck from a center offset from the crankshaft axis in order to provide clearance for the timing belt. The offset construction also improves the joint seal between the oil pan and the engine block.

Abstract: A drive unit preferably employed with a self-propelled lawn mower for driving at least one pair of wheels of the mower. An axle pulley is fixed on the axle of the drive wheels and a directional pulley is rotatably mounted above and in a spaced apart relation to the axle pulley. A drive belt is trained over an upper portion of the directional pulley and about a lower portion of the axle pulley and is then trained about an upper portion of a directional roller. The drive unit has a drive condition and an idle condition in which a portion of the drive belt, between the directional roller and the axle pulley, is in a generally vertical run.

Abstract: A tensioner for a power transmission belt that is adapted to be operated in an endless path and a method of making the same are provided, the tensioner comprising a mechanical spring unit operatively associated with a support unit and a belt engaging unit for urging the belt engaging unit relative to the support unit and against a belt with a force to tension the belt, and a fluid dampening unit operatively associated with the support unit and the belt engaging unit to dampen the movement of the belt engaging unit relative to the support unit in at least one direction of movement thereof, the fluid dampening unit comprising a rotary dampening unit and being coaxially aligned with the spring unit.

Abstract: A chain drive system (10) wherein the chain (12) includes a plurality of interconnected links (14) is provided. The chain drive system (10) includes a drive gear (28) for driving the chain (12). A rack (20) is provided and includes a plurality of spaced apart teeth (22) for engagement with the links (14) of the chain (12). Idler gears (38, 40) are provided for causing engagement between the chain (12) and the rack (20).

Abstract: A method and apparatus for slitting ribbon stock for use in making fins for a heat exchanger. A pair of slitter wheels are mounted to co-act on separate shafts. One of the shafts is driven by a motor and the other shaft is driven therefrom. Notched pulleys mounted on each shaft and a double sided belt connects the pulleys to maintain the slitter teeth and respective wheels in registration during rotation. A phase shifting device is further provided to allow for initial alignment of the slitter teeth relative to the pulleys.

Abstract: A belt tensioning device for an endless drive belt for a vehicle accessories drive system. A sheet metal bracket is adapted to be mounted on an engine adjacent the drive belt and has a lever plate pivotally mounted thereon. An idler pulley is rotatably mounted on the lever plate and is adapted to be moved in a belt tensioning direction for engagement with the drive belt. A coil spring is mounted on the bracket and is engaged with the lever plate biasing the lever plate and pulley in the belt tensioning direction. A series of ratchet teeth is provided in the lever plate and is engaged by a detent which is mounted on the bracket and formed of a strip of spring steel. The spring steel detent-ratchet teeth engagement retards movement of the lever plate in a direction opposite to belt tensioning direction. Also the detent will bow outwardly due to the resiliency thereof while retarding the reverse movement of the lever plate to provide a damping effect on the belt engaging pulley.

Abstract: An endless power transmission belt is provided which comprises a first portion defining the bottom surface of the belt and comprising a plurality of laterally spaced power transmitting ribs and a groove between each adjacent rib, a second portion bonded to the first portion and acting as a tie band therefor and for the third portion which defines the top surface of the belt and also comprises a plurality of laterally spaced power transmitting ribs and a groove between each adjacent rib. The third portion is symmetrical with the first portion and the grooves in each portion provide a relief area between the ribs to allow debris to work through the tie band and become discharged.

Abstract: An infinite variable transmission with input shaft (52), planetary carrier (28), planetary pulleys (36) and planetary gears (32) with planetary axles (30) equiangularly disposed on the carrier (28). Variable pitch pulley (41) adjust a serpentine belt (38) which adjust the rotation of the planetary gears (32) to adjust the output shaft (20).