Abstract: A sound reducing device (30) for an internal combustion engine (1, 101) comprises a chamber forming member (33) defining a sound reducing chamber (32) having a prescribed column length jointly with a belt cover, and the sound reducing chamber communicates with the belt chamber via an opening (31), and the opening opposes a part of a timing belt passed around the cam pulley.

Abstract: An accessory gearbox of an aircraft engine includes a cover mounted thereto. The cover defines a centrally extending axis and has an outer surface with accessory mounts disposed thereon. First and second accessory devices are mounted to the gearbox at first and second mounts spaced apart on the cover. A planar linking member dynamically couples the first accessory device to the second accessory device. The linking member extends transversally relative to the axis and has a first side opposite a second side with a first opening extending therethrough. The first opening is aligned and matingly receiving at least a portion of the first accessory device therethrough. The linking member has a second opening extending therethrough. The second opening is aligned and matingly receiving at least a portion of the second accessory device therethrough. The linking member mechanically interconnects the first and second accessory devices independently from the cover.

Abstract: A continuously variable transmission includes: a CVT mechanism including a driving pulley, a driven pulley, an annular belt wound around the driving pulley and the driven pulley, and a centrifugal fan blade disposed at the driving pulley; and a CVT case that defines an internal space accommodating the CVT mechanism. An inner surface of the CVT case includes: a peripheral surface portion that covers the CVT mechanism from an outer side in a radial direction orthogonal to an axial direction of the driving pulley; and a guide surface portion that projects toward an inner side in the radial direction from the peripheral surface portion.

Abstract: An injection molding machine includes a belt transmission mechanism (mold opening/closing mechanism, ejector mechanism, screw drive mechanism, injection mechanism) configured to transmit drive force from a driving shaft (driving pulley) to a driven shaft (driven pulley) by means of a belt. The injection molding machine includes: a cover covering part or entirety of the belt; and a sensor attached to the cover and configured to detect an abnormality of the belt.

Abstract: The present disclosure relates to a belt driven system. The belt driven system may include a master pulley, a slave pulley, a belt around the master pulley and the slave pulley, a tension pulley configured to tension the belt, and a position adjusting device configured to automatically adjust a position of the tension pulley based on an interaction of the tension pulley and the belt.

Abstract: A vehicle has an engine; a drive pulley connected to and driven by a crankshaft of the engine; a driven pulley; an output shaft connected to and driven by the driven pulley; a belt looped around the pulleys; and a cover connected to the engine. The cover and the engine define a volume therebetween. A baffle disposed in the volume separates the volume in first and second chambers. The first chamber is disposed between the baffle and the engine. The second chamber is disposed between the baffle and the cover. The pulleys are disposed in the second chamber. The baffle defines first and second apertures fluidly communicating the first chamber with the second chamber. An air inlet is fluidly connected to the first chamber. An air outlet is fluidly connected to the second chamber.

Abstract: A power tool may include a compartment in its housing and a first printed circuit board (PCB) located in the housing and electrically coupled to a first connector. An insertable wireless communication device may include a second electronic processor and an antenna that are each mounted to a second PCB. The insertable wireless communication device may be configured to be received in the compartment and may include a second connector configured to electrically and physically couple to the first connector. The insertable wireless communication device may be configured to wirelessly communicate with an external device. When the insertable wireless communication device is inserted into the compartment, a first conductive layer of the first PCB may be configured to be electrically coupled to the antenna via the first connector and the second connector such that the first conductive layer of the first PCB serves as a ground plane of the antenna.

Abstract: A CVT 6 (FIG. 9) comprising of two substantially identical CVT 4's. Each CVT 4 comprises of two cones that are coupled by a transmission belt. The driving cones of the CVT 4's are mounted on a common shaft, and the driven cones of the CVT 4's are mounted on a common shaft. For each CVT 4, one of its cones is mounted on its shaft using an adjuster, which uses an indexing mechanism, that can lock or release the rotational position of its cone relative to the shaft it is mounted. Each CVT 4 has a tense side tensioning/support pulley and a slack side tensioning/support pulley (FIG. 6) which can provide and remove slack as needed to allow for axial position changing of a cone for all operating conditions of their CVT without breaking/excessively stretching a transmission belt.

Abstract: A safety guard assembly for enclosing a flexible drive extending between a driving shaft and a driven shaft is provided. The safety guard assembly includes: a back cover having at least two slidably engageable back cover members for varying a length of the back cover, the back cover having at least two shaft openings extending therethrough for receiving a respective one of the driving shaft and the driven shaft therein; and a front cover having at least two slidably engageable front cover members for varying a length of the front cover, the front cover being securable to the back cover for defining an enclosure for the flexible drive. A method for enclosing a transmission mechanism including a flexible drive extending between a driving shaft and a driven shaft is also provided.

Abstract: A cover for protecting a drivetrain system, which is used when a bicycle is stowed in a carrying bag, is disclosed. The chain bag is a rectangular bag with two hanging belts. The hanging belts are separately disposed with velcro fasteners for hanging on a frame or rack of a bicycle.

Abstract: A removable, flexible cover with a single closure and without moving parts such as elastic, zippers, or ties, for enclosing a bicycle's drive train elements, thereby protecting during transport of the bicycle both the drive train and objects that otherwise would come into contact with grease or sharp components from the drive train elements.

Abstract: The invention is a combination drive and suspension system that includes an upper drive assembly and a lower drive assembly pivotally connected. The pivoting drive system provides improved ground clearance for a farm vehicle capable of carrying a large quantity of field application material.

Abstract: A bicycle having a wheel (e.g., a rear wheel) and a frame supported by the wheel. The frame includes a wheel support and a stay extending from the wheel support. A stay protector resiliently engages the stay and comprises a body member including a resilient material adapted to resiliently engage the stay, and a guard member positioned on (e.g., protruding beyond) an outer surface of the body member (e.g., on a top portion and/or bottom portion of the body member). Preferably, the stay includes a molded image on a central portion that is not covered by the guard member. In one embodiment, the guard member comprises a material that has a different hardness than the resilient material of the body member. For example, the guard member can comprise a material that is harder than the resilient material of the body member.

Abstract: In a belt continuously-variable transmission, a casing or a housing is formed with an air communicating hole extending through an upper part of the casing or the housing. The casing and the housing include inner walls defining an air breather chamber and communicating parts. The air breather chamber is defined in a region located above a joint between the casing and the housing and ranging from an upper side of the second shaft to an upper side of the first shaft and between the second shaft and the first shaft. The communicating parts are defined at a position in the upper side of the first shaft and at a position between the second shaft and the first shaft. The air breather chamber communicates with open air via the air communicating hole, and communicates with an inside part of a casing assembly via each of the communicating parts.

Abstract: A guide device for an endless torque-transmitting member. The guide device includes at least two corresponding guide tongues between which the endless torque-transmitting member is at least partially guided. The guide tongues are held at a predetermined distance from each other by a connection region. The distance between the guide tongues is maintained substantially constant when there is a temperature change by the use in the guide device of materials having different coefficients of thermal expansion. A mold for producing a guide device is disclosed and includes two corresponding mold halves, where at least one connecting component formed from a material having a lower coefficient of thermal expansion than that of the guide tongues is held in one mold half.

Abstract: A safety guard assembly for enclosing a flexible drive extending between a driving shaft and a driven shaft is provided. The safety guard assembly includes: a back cover having at least two slidably engageable back cover members for varying a length of the back cover, the back cover having at least two shaft openings extending therethrough for receiving a respective one of the driving shaft and the driven shaft therein; and a front cover having at least two slidably engageable front cover members for varying a length of the front cover, the front cover being securable to the back cover for defining an enclosure for the flexible drive. A method for enclosing a transmission mechanism including a flexible drive extending between a driving shaft and a driven shaft is also provided.

Abstract: The invention is a combination drive and suspension system that includes an upper drive assembly and a lower drive assembly pivotally connected. The pivoting drive system provides improved ground clearance for a farm vehicle capable of carrying a large quantity of field application material.

Abstract: A straddle type all terrain vehicle is provided with a chain guide for covering an outer peripheral edge of at least an engaged portion of a driven sprocket with a drive chain from outside in a radial direction inside a chain cover. A rear axle housing is formed with upper and lower flange portions extending upward and downward at opposite end portions in the vehicle width direction of the rear axle housing. The rear axle housing is coupled to a rear end portion of the rear swing arm for swinging forward and rearward about mounted portions of the upper flange portion. The chain cover is mounted on the swing arm side and the chain guide is mounted on the rear axle housing side, respectively.

Abstract: A hollow yoke is inserted into a bore section of a frame. The yoke is connected to a slider via a slit in the frame. A timing belt is inserted into a belt hole of the yoke. Further, a pair of guide members are provided on both side surfaces of the yoke, which engage with guide grooves of the frame. The yoke is displaced along the guide grooves by the timing belt, under a driving action of a driving section. Accordingly, the slider is displaced in the axial direction along the frame.

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: A bicycle having a wheel and a frame supported by the wheel. The frame includes a wheel support and a stay extending from the wheel support. A stay protector resiliently engages the stay. In one embodiment, the stay includes a tubular-shaped member having an exterior surface, and the stay protector is contoured to substantially match the exterior surface.

Abstract: A noise suppressor for a straddle-type vehicle provided with a belt type continuously variable transmission having a resin-block-type belt. A portion of an air passage for guiding air to a belt chamber is formed in a closed casing. The closed casing includes a dish-shaped first casing member and a dish-shaped second casing member. An inlet port and an exhaust port are formed in the second casing member. Partition walls in the form of curved plate pieces are formed in the first casing and second casing members. Air flow paths formed by the partition walls are U-shaped, thereby forming a serpentine flow.

Abstract: The invention is a combination drive and suspension system that includes an upper drive assembly and a lower drive assembly pivotally connected. The pivoting drive system provides improved ground clearance for a farm vehicle capable of carrying a large quantity of field application material.

Abstract: A gear-shifting apparatus is provided which does not require a position of a chain to be set with high precision, and which reduces a risk of the chain coming off an adjacent sprocket due to a quick gear shifting operation. The gear shifting system includes a derailer for changing the chain from one sprocket to another among a plurality of axially-arranged gear shifting sprockets, and a case for containing the gear shifting sprockets and the chain. The case is provided with a protruding part for preventing the chain from moving axially outwardly at an area too close to the case. The protruding part effectively prevents the chain from coming off from the adjacent sprocket by means of contact of the protruding part with the chain.

Abstract: The present invention refers to a mechanism for mechanical speed reducer or overdrive in which for each reducing stage there are two pulleys or sprockets disposed laterally and in parallel position between themselves, moreover one of them in orbital motion provided by a eccentric cam reciprocal to the reducer input element and the other pulley or sprocket disposed at the same input element center and the torque transmission between the pulleys or sprockets is done through a belt.

Abstract: A high ground clearance drive assembly includes a drop box and an articulation drop box. The drop box is fixed to the vehicle frame and the articulation drop box pivots relative thereto as a suspension system is exercised. The articulation drop box is pivotable about a pivot pin which extends through both the articulation drop box and the drop box to provide an axial preload therebetween. A first chain interconnects an input sprocket on the input shaft and an intermediate sprocket assembly. A second chain interconnects a second intermediate sprocket and the output sprocket to drive an output shaft connected thereto. A hollow shaft supports the first and second intermediate sprockets about the pivot pin such that rotation of the articulation drop box relative the drop box is accommodated without additional complex structure.

Abstract: A chain casing of a bicycle includes an intermediate hollow body that extends between a chain ring and a sprocket. The hollow body has a peripheral wall defining a receiving space. First and second partitions extend in the receiving space to divide the same into upper and lower compartments that receive the upper and lower chain sections of a chain extending between the chain ring and the sprocket. A tension roller is disposed between a front end of the hollow body and the chain ring below the lower chain section, which is in sliding contact with and straddles the tensioning roller.

Abstract: An actuator comprises a driving force-transmitting mechanism which includes a belt member running over a driving pulley and a driven pulley, and a guide mechanism which includes a plurality of balls which rolls along first ball-rolling grooves formed on a frame, and second ball-rolling grooves formed on a slider. The guide mechanism guides the slider when the slider is displaced along the frame.

Abstract: A continuously variable transmission or an analogous torque transmitting system has two rotary members in the form of wheels, gears or pulleys (such as adjustable pulleys) which are rotatable about parallel axes. An endless flexible element in the form of a link chain, pintle chain or belt has arcuate portions trained over the rotary members and elongated reaches or stretches extending between the arcuate portions. At least one of the stretches is at least partially confined in but movable lengthwise relative to an elongated rail or another suitable guide which at least reduces lateral stray movements of the respective stretch. This reduces noise as well as the wear upon the endless flexible element and the rotary members.

Abstract: An all terrain vehicle has a crankcase cover and shaft supporting arrangement through which a shaft of a transmission is mounted between the crankcase and a crankcase cover. The arrangement includes a spider bracket having a bearing carrier and a cover member attached to the crankcase through the spider arrangement. The crankcase cover is preferably made of a less thermally conductive material as compared to the spider.

Abstract: A cover structure for a belt converter facilitating more easily inspecting or replacing a drive belt in a small vehicle in which an obstacle is provided in such a direction as to hinder removal of a cover configured for covering an outer periphery and an outer side face portion of a belt converter.

Abstract: A flexible, removable cover for a bicycle drive train including an elongated oval pouch dimensioned and configured to encase the front and rear sprocket and derailleurs, chain, and one pedal of a bicycle, pouch having a central flap folded over the central portion of the chain, Velcro® patches strategically placed to hold and to secure portions of the cover about the front and rear sprockets, a zipper assembly to secure flap in place, and a wraparound seat post enclosure with a barrel-lock cinch which keeps water and debris from migrating down the post and onto the bicycle drive train.

Abstract: A belt type transmission improves the durability of a support portion of a driven shaft by reducing a load acting on a driven shaft, and improves the durability of the belt and reduces noise by suppressing vibration of a driven pulley. The belt type transmission includes a driven pulley having a fixed pulley piece and a movable pulley piece fitted to a driven shaft. The fixed pulley piece is rotatably supported, respectively, on the driven shaft and a bearing holder, being a constructional element of a transmission case. The bearing holder has a size overlapping only the driven pulley, and is coupled to a left case, which is a constructional element of the transmission case, in the vicinity of the driven pulley. As a result, the rigidity for supporting the fixed pulley piece on the driven side can be increased, thereby enabling suppression of vibration by the driven pulley.

Abstract: A flexible, removable cover for a bicycle drive train including an elongated oval pouch dimensioned and configured to encase the front and rear sprocket and derailleurs, chain, and one pedal of a bicycle, pouch having a central flap folded over the central portion of the chain, VELCRO® patches strategically placed to hold and to secure portions of the cover about the front and rear sprockets, a zipper assembly to secure flap in place, and a wraparound seat post enclosure with a barrel-lock cinch which keeps water and debris from migrating down the post and onto the bicycle drive train. For tandem bicycles, an additional cover is provided for covering the chainstay drivetrain which is configured as an elongated pouch encasing a front and a rear pedal at their respective axles and covering the front and rear drive train sprockets and the intervening drive chain.

Abstract: In a chamber R1 which accommodates a transmission device comprising a drive pulley 8, a driven pulley 9 and a belt 10, a cover 51 is provided to cover the lower peripheral portion of the drive pulley 8 along the periphery. The drive pulley is positioned below the driven pulley, and raised portions 52 which are used for the detection of the rotational speed of the drive pulley are provided on the periphery of the drive pulley. The end surface 51bs of the cover facing the inner wall 54 of the pulley chamber is positioned away from the inner wall with a clearance V therebetween. In a vehicular transmission which is constructed in this arrangement, the amount of lubrication oil that flows near to the periphery of the pulley which is positioned lower is comparatively small. Thus, this arrangement restricts agitation of the lubrication oil, which may be caused by the raised portions of the rotating pulley.

Abstract: A chain cover includes t and rear casing parts connected detachably to one another. The front casing part has a first top wall, a bottom wall and two opposing first side walls with first side ends. The first top wall has a U-shaped first top end. The bottom wall has a U-shaped first bottom end. The rear casing part has a second top wall, two opposing second side walls with second side ends and a U-shaped second bottom end. The second top wall has a second top end. The first and second side ends extend straightaway in a downward direction. The first top wall and the first side walls are provided with first rail members. The second top wall and the second side walls are provided with second rail members. The first and second rail members on the first and second top walls are interlocked with one another to prevent the rear casing part from disengaging rearwardly from the front casing part when the front and rear casing parts are connected to one another.

Abstract: Improvements in the method of power transmission to the main rotorshaft of a specific type of rotary-wing aircraft through the provision of modern drive components specifically adapted to provide enhanced reliability, safety, passenger comfort, performance and economy in the operation and maintenance of such aircraft.

Abstract: A drive mechanism (10, 110) for driving first and second displacement members (12, 14, 112, 114) disposed in tandem. The mechanism includes first and second driven sprockets (16, 18; 116, 118) for respective ones of the displacement members, a hydraulic motor (20; 120), and first and second driving sprockets (22, 24; 122, 124) disposed on the casing of the hydraulic motor so as to be rotated thereby. The mechanism also includes first and second chains (26, 28; 126, 128) disposed in a chain case (30; 130), each chain being engaged on a respective driven sprocket and on a respective driving sprocket. The hydraulic motor (20, 120) is a low-speed high-torque motor, having radial cylinders and a rotary casing. The motor is substantially contained in the chain case (30; 130).

Abstract: A cooling structure of a belt transmission for vehicles which limits the consumed power for cooling to a minimum and does not deteriorate cooling performance of the transmission. A drive pulley having a variable pitch diameter and a driven pulley which is driven through a drive belt and has a variable pitch diameter is housed in a substantially elliptical housing. An intake port formed in the vicinity of a suction part of the cooling fan formed on the drive pulley in the housing to forcedly introduce air from the outside and exhaust air to the outside. An exhaust port on the housing in a normal direction of the driven pulley at the rearward of a center of rotation of the driven pulley as seen from a side.

Abstract: A cover for a pump jack includes a main rear wall with two slots for engaging over a pair of shafts of the pump jack at the drive belt on the pulleys on the drive shafts. The rear cover portion includes a peripheral wall extending around the sides and top of the peripheral edge with the bottom of the cover panel being opened. A front panel portion manufactures a single piece or as multiple pieces fits over the rear cover panel with a lip engaging onto the peripheral wall to which it is connected by latches. A stiffener member extends across the rear wall and closes the slots. A similar stiffener member can be attached across the front panel portion. Both the rear panel and the front panel are manufactured from glass fibre reinforced resin allowing the product to be manufactured in lightweight. The front cover panel can therefore be readily removed to allow replacement of the belt.

Abstract: A chain cover including a plurality of first cover blocks and a plurality of second cover blocks. Each of the blocks has a pair of side walls each having a projecting portion at an inner side thereof. The projecting portions have configurations which conform with lateral faces of outer link plates of a chain so as to receive the outer link plates. Each of the first and second cover blocks further has a bridge connecting the side walls, and the side walls are formed with a convex front edge portion and a concave rear edge portion. The concave rear edge portion of the second cover blocks are rotatably slidable on the convex front edge portion of an adjacent one of the first cover blocks. The convex front edge portions and the concave rear edge portions lie along portions of the a cylindrical surface having a central axis including the corresponding pins of the chain.

Abstract: A trenching machine includes a vehicle, an engine transmission assembly, a transfer box assembly, an elevated differential gearbox, a trenching chain drive shaft, a pair of roller chains engaging the trenching chain drive shaft and the output shaft of the differential gearbox, a trenching chain assembly mounted on and driven by the trenching chain drive shaft; and a discharge conveyor positioned below the differential gearbox and the pair of roller chains. The transfer box assembly, which transfers power from the engine transmission assembly vertically to the elevated differential gearbox, includes a sealed but accessible housing, a lower shaft, an upper shaft positioned parallel to and vertically above the lower shaft, and a roller chain running on sprockets on the upper and lower shafts. The lower shaft is connected to the engine transmission output shaft by a first universal joint, while the upper shaft is connected to the input of the differential gearbox by a second universal joint.

Abstract: A removable flexible chain cover assembly for enclosing the drivetrain of a bicycle during storage and transport and protecting the surroundings from contact with the grease and dirt and sharp components of the drivetrain.

Abstract: A piston engine or machine with a belt drive which is surrounded by a housing, with the housing substantially sealing off the belt drive from the environment and from the piston engine or machine, is provided. The housing may have Helmholtz resonators facing the belt drive.

Abstract: A chainguard is disclosed for fully enclosing a bicycle chain on a bicycle having a front sprocket and a rear sprocket. The chainguard includes inside and outside covers extending from the front sprocket to the rear sprocket. The inside cover is formed as a hinged structure having top and bottom halves which may be pivoted together once the inside cover is in position extending around the bicycle crank and the rear axle. After the inside cover is in position, the outside cover may be moved into engagement with the inside cover whereby the top and bottom halves of the inside cover are secured together and the bicycle chain is fully enclosed.

Abstract: A connecting passageway is provided between a cooling air fan and an enclosure for an enclosed belt drive of an internal-combustion engine, whereby the belt drive is cooled by a cool-air stream diverted from the cooing fan.The connecting passageway is made as an air shaft, which is formed largely from existing parts of the internal-combustion engine and, in addition, is arranged in such a fashion that it has no parts protruding beyond the outer counter of the engine.

Abstract: In a machine, such as an internal combustion engine, in which a chain is used to transmit rotating power from one shaft to another, the chain is situated in an oil-tight chain compartment which is separated from other lubricant containing spaces so that lubricating oil in the other spaces cannot flow directly into the lubricating oil in the chain compartment. Contamination of the chain lubricant is avoided, and the useful life of the chain is increased. In a first embodiment, a separate quantity of oil is situated in the chain compartment. In a second embodiment, the chain lubricating oil is recirculated in the chain compartment by a dedicated pump. In a third embodiment, filtered engine oil is delivered to the chain compartment through a passage in a shaft, and through a port in a chain sprocket on the shaft.

Abstract: A flexible transmission device for continuously variable transmissions comprises an endless flexible connecting element and a plurality of transverse links. Each link includes at least one groove into which is engaged the flexible connecting element. The links are, preferably, covered by a fabric, and the exterior surface of the fabric is for being positioned in contact with the flanges of the pulleys over which the belt is positioned and operates.

Abstract: An improved shield of belted wheel of a compound machine comprises mainly a slide hole disposed at an appropriate location of upper portion thereof and a slide cover positioned correspondingly to the slide hole. The slide cover is characterized in that it comprises two rails located at lateral sides of bottom surface thereof to permit the slide cover to move along the confines of the slide hole in such a way that there is a sufficient open space in the slide hole to allow the shield to be lifted through the main shaft. The shield can be therefore opened up and closed with ease and speed.

Abstract: A fabric is cut, sewn, and furnished with Velcro or other hook and loop fastener portions to become a cover to be removably positioned about a drive mechanism of a bicycle to protect this drive mechanism from the accumulation of dirt. A back elevational side of this fabric cover has spaced circular cuts with access cuts to these spaced circular cuts, thereby forming an access flap. These cuts accommodate the fitting of this back elevational side about both the rear axle and the pedal axle, and alongside the drive chain and the sprocket of a bicycle. After the fitting of this back elevational side about a rear axle and a pedal axle, Velcro fastener portions are used to keep the access cuts closed together when this cover is in use. A front side, which is continuous throughout, is thereafter secured to the back elevational side, where not previously initially sewn together to make this cover, by using components of Velcro fasteners.