Abstract: A bicycle front chainwheel assembly is provided that includes a protective cover. The front chainwheel assembly basically includes a crank arm, one or more chainrings and the protective cover. The crank arm includes a hub portion, a crank portion and four fastening finger portions. The free ends of the fastening finger portions are provided with chain ring attachment points for attaching the cover thereto. The cover is attached to the fastening finger portions by fasteners that have a shaft extending substantially perpendicular to the axis of rotation of the front chainwheel assembly.

Abstract: A bicycle includes a conventional pedal crank and chain drive together with a conventional derailleur shifting mechanism operative to selectively transfer the drive chain between alternative rear sprockets of the bicycle drive system. A chain ring is rotatable in response to pedal crank rotation to transfer pedal crank power to the rear sprockets. A pair of guide blocks define respective internal guide channels through which the drive chain passes toward and from engagement with the chain ring. The guide blocks are maintained at their respective positions by a guide support plate secured to the bicycle frame.

Abstract: A bicycle front chainwheel assembly is provided that includes a protective cover. The front chainwheel assembly basically includes a crank arm, one or more chainrings and the protective cover. The crank arm includes a hub portion, a crank portion and four fastening finger portions. The free ends of the fastening finger portions are provided with chainring attachment points for attaching the cover thereto. The cover is attached to the fastening finger portions by fasteners that have a shaft extending substantially perpendicular to the axis of rotation of the front chainwheel assembly.

Abstract: A bicycle front chainwheel assembly is provided that includes a protective cover. The front chainwheel assembly basically includes a crank arm, one or more chainrings and the protective cover. The crank arm includes a hub portion, a crank portion and four fastening finger portions. The free ends of the fastening finger portions are provided with chainring attachment points for attaching the cover thereto. The cover is attached to the fastening finger portions by fasteners that have a shaft extending substantially perpendicular to the axis of rotation of the front chainwheel assembly.

Abstract: A motorcycle has a final drive, including a flexible drive member, such as a chain or a belt, that extends between the drive pulley and the driven pulley. A belt retention member is positioned proximate a forward portion of the final drive to reduce the likelihood of the belt skipping free of the drive pulley. The belt retention member preferably includes an upper belt retention portion and a lower belt retention portion. Preferably, the upper drive retention portion is positioned further forward relative to the lower belt retention portion such that the upper portion is moved more forward relative to an axis of rotation of the pulley. In this manner, the belt retention member allows more slack to be thrown during rapid acceleration from a decelerated state in the illustrated motorcycle.

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 fastenerless chain snubber is provided that consists of a snubber body, and one or more attachment arms that form positioning blocks. The snubber is positioned in a housing by channel surfaces in the chain housing that locate the positioning blocks of the snubber. The snubber is firmly secured during chain operation by the substantial contact between the snubber attachment arm surfaces opposite the chain cover and the corresponding surface of the installed chain cover.

Abstract: A motorcycle has a final drive, including a flexible drive member, such as a chain or a belt, that extends between the drive pulley and the driven pulley. A belt retention member is positioned proximate a forward portion of the final drive to reduce the likelihood of the belt skipping free of the drive pulley. The belt retention member preferably includes an upper belt retention portion and a lower belt retention portion. Preferably, the upper drive retention portion is positioned further forward relative to the lower belt retention portion such that the upper portion is moved more forward relative to an axis of rotation of the pulley. In this manner, the belt retention member allows more slack to be thrown during rapid acceleration from a decelerated state in the illustrated motorcycle.

Abstract: A bicycle includes a conventional pedal crank and chain drive together with a conventional derailleur shifting mechanism operative to selectively transfer the drive chain between alternative rear sprockets of the bicycle drive system. A chain ring is rotatable in response to pedal crank rotation to transfer pedal crank power to the rear sprockets. A pair of guide blocks define respective internal guide channels through which the drive chain passes toward and from engagement with the chain ring. The guide blocks are maintained at their respective positions by a guide support plate secured to the bicycle frame.

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 bracket assembly for mounting a motor or other control device to a bicycle frame includes a bracket base for supporting the control device at least partially above a chain stay, and a bracket support extending from the bracket base for coupling the bracket base to at least one of a chain stay, a seat stay, a seat tube, or a bottom bracket shell.

Abstract: The invention involves a chain guide rail for guiding a chain between two chain wheels, having a rail body made of plastic and a guide rail connected to it, which is also made of plastic, with a running groove to receive the chain.

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 cooling system for a vehicle power unit has a cooling fan rotated by the rotational force from the crankshaft, in the housing thereof so as to cool the internal space of the housing by introducing air into the housing and discharging the thus introduced air to the outside through upper and lower outlet ports. The upper side outlet port is formed in the housing upper surface opposing the approximate middle portion of the V-belt's return path along which the V-belt moves from the rear to the front so as to promote the current of air introduced in the housing to flow along the direction of travel of the V-belt.

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 cable reversing system for an automatic window lift having a cable reversing part affixed to a rail. The cable reversing part defines a housing enclosing a cable pulley. The cable pulley has two bearing stubs which snap into corresponding clearances in the cable reversing part so that the cable pulley is supported in a geometric interlocking manner inside the cable reversing part.

Abstract: A combination includes a derailleur having a chain cage engaging a bicycle chain, a clamping head clamping the derailleur to a bicycle frame and including an opening therethrough, a controller actuating the chain cage and including link arms pivotally connected at one end to the clamping head, with the cable extending through the opening in the clamping head and to the upper link arm, and a cage securing member connected with the chain cage, with opposite ends of the link arms pivotally connected to the cage securing member; and a one-piece protective cover including an endless sleeve of a rubber material, having a hollow interior, a first open end, having a first axis, in communication with the hollow interior and of sufficient size to permit the first open end to be pulled over the clamping head and the controller, the first open end being secured to the cage securing member, a second opposite open end, having a second central axis perpendicular to the first central axis, and in communication with the hollo

Abstract: An anti-snare device including a roller dimensioned and positioned to deflect away, and thereby prevent, a bouncing bicycle chain from contacting the lower-rear quadrant of a chain ring gear when shifting to a smaller front gear during vigorous pedaling, and from catching on a tooth on the upwardly rotating section of the gear.

Abstract: A swingarm cover adapted to be mounted on a motorcycle swingarm and covering at least a portion of the outer face and at least a portion of the end face of the swingarm. For example, the cover can be designed to cover at least a portion of both the rear axle and the adjuster of the motorcycle. Preferably, the cover includes an opening for providing access to the rear axle, and an outer member detachably mounted to the cover and positioned to cover the opening. The cover can be secured to the swingarm by a clamping bar adapted to positioned against an inner face of the swingarm and interconnected with the cover to maintain the cover mounted on the swingarm. The cover can further include a notch for receiving a belt guard mounting arm of the motorcycle. Preferably, the cover wraps around at least a portion of the upper face and the lower face of the swingarm.

Abstract: A lockable chain winder for opening and closing windows has an internal mechanism which includes a stop member (16) which can be moved to engage with the chain winder sprocket (15) in such a manner that the sprocket (15) can freely rotate on one direction, but not in the other direction.

Abstract: A cable drive for a hoisting mechanism, including a carrying element having a recess, at least one of a top block and a cable end attachment, each of which has a horizontal swivel axle having two ends, and bearing elements swivelably mounted at both ends of the axle so that each of the bearing elements is rotatable by 180 degrees relative to its vertical central plane. The bearing elements are arranged in the recess of the carrying element, each bearing element having a laterally offset bearing bore in which the swivel axle is mounted so that movement of the bearing element causes a lateral parallel movement of the swivel axle.

Abstract: A bicycle chainwheel plate is formed to reduce the weight of a chainwheel crank and to keep its stiffness at a high level. The chainwheel plate is coupled between a crank arm and at least one sprocket. In one embodiment, the crank arm is detachable from the chainwheel plate, while in the second embodiment, the crank arm is integrally formed with the chainwheel plate as a one-piece, unitary member. The crank arm is designed to accommodate a pedal at its free end and is centrally attached to the chainwheel plate at the other end. In the first embodiment, the chainwheel plate comprises a crank attachment portion having a centrally located crank attachment hole in which a crank arm can be fixed in a non-rotatable fashion, four connecting arm portions radially extending in four directions from the crank attachment portion, and chainwheel fixing portions bifurcating and extending outward from the tips of the arm portions.

Abstract: A combination bicycle derailleur and one-piece cover therefor, includes a derailleur having a chain cage, a cage securing member connected with the chain cage, a derailleur clamping head for clamping the derailleur to the bicycle frame, and a controller for actuating the chain cage, the controller including link arms pivotally connected to the derailleur clamping head and cage securing member, with the cable being connected to one link arm.

Abstract: A bicycle drive chain (1) guide to prevent the drive chain (10) from derailing off the inside of the inner chain wheel. The chain guide is a simple one piece device which can be easily attached to the bicycle frame during manufacturing.

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 protective cover for a derailleur includes a top cover member for covering a top portion of a derailleur, a front cover member coupled to the top cover member for covering a front portion of the derailleur, and a rear cover member coupled to the top cover member for covering a rear portion of the derailleur. In a specific embodiment the top cover member, the front cover member, and the rear cover member define an open lateral outer side. A collar is provided for fitting the protective cover to a structural member of the bicycle.

Abstract: A device for protecting bearings of idle pulleys in belt drives includes a cover 22 having a circumferential connecting portion 23 operatively engageable with a terminal edge 13a of a fastening collar 13 positioned on the pulley and housing the bearing 18 inside. Elastic tongues 26 projecting from the cover 22 are provided at their ends with corresponding hooking teeth 24 able to engage into corresponding through engaging openings 25 in a disc-shaped flange 14, which interconnects the fastening collar 13 with a cylindrical rolling portion 13 of the pulley. The tongues 26 are elastically deformable by virtue of centrifugal force so that the interference between the hooking teeth 24 and the interconnecting flange 14 is increased by increasing the rotation speed of the pulley 2.

Abstract: A structure for preventing a tooth skip in a toothed endless power transmitting belt. On an inner side of a tooth skip preventing member covering an outer surface of a toothed rotor is formed a tooth skip preventing piece bent at a right angle. The tooth skip preventing member is arranged substantially in parallel with the outer circumferential surface of the toothed endless power transmitting belt wound around a toothed driving pulley with a narrower space than a tooth height of the pulley. The tooth skip preventing member is fixed to a casing by a bolt penetrating a hole of the member. On a outer side at a central portion of the tooth skip preventing member is formed a harness holding piece bent at a right angle in the same direction as the tooth skip preventing piece.

Abstract: A protective cover for a derailleur of a bicycle including a frame, a plurality of sprockets mounted to the frame, an endless chain in meshing engagement with one front sprocket and one rear sprocket, and a cable for actuating the derailleur, the derailleur being mounted to the frame in association with the sprockets and including a cage assembly for moving the endless chain from one sprocket to another sprocket, a controller for actuating the cage assembly to control the latter to move the chain from one sprocket to another sprocket and a derailleur clamping assembly for clamping the derailleur to the bicycle frame, with the cable being connected with the controller of the derailleur for actuating the controller, the protective cover includes a main body for wrapping around the controller to inhibit entry of contaminants to the controller, the main body being made of a flexible material and including side walls forming an enclosure for receiving the controller therein, the side walls being connected together

Abstract: A bicycle chain guide is secured to the front hub portion of an otherwise conventional bicycle having a multiple speed chain drive and plural front sprocket coupled to a pedal crank. The bicycle chain guide is pivotally secured beneath the front hub and defines a plurality of staggered step portions corresponding generally to the outer diameters of the plural front sprockets. Sufficient clearance is provided between the step portions and the front sprockets to avoid rubbing against the chain engaged with one of the front sprockets. In the event a chain whipping motion or wave is imparted to the bicycle chain, the minimal clearance between the step portions of the chain guide and the underlying chain captivate the chain against the engaged sprocket and prevent separation thereof. During chain transfer between sprockets, the lateral motion of the chain displaces the pivotally secured guide temporarily afterwhich a return spring restores the chain guide to the proper position.

Abstract: A chain guide structure having, in combination, a chain cover and a chain guide member which can easily and securely be placed on the chain cover for temporary assembling, and capable of improving the efficiency of the assembling work. A chain guide structure for guiding a chain wound round a driving sprocket supported on the sidewall of a crankcase and covered with a cover attached to the sidewall includes an elastic chain guide member having a substantially semicircular shape opening toward the rear and supported on the inner surface of the cover so as to extend along the chain. At least two ribs are formed on the inner surface of the cover so as to hold the chain guide member by elastically deforming the chain guide member so that the width of the open end of the chain guide member is changed.

Abstract: A guard device for sewing machine disposed on a table composed of a first or fixed covering for covering over a lower portion of a belt, and a second or movable covering adapted to shield the belt other than that covered by the first covering. The first covering is provided with an open space or opening defined by its side walls and a lid hingedly mounted on a finger or engageable portion of a wall member of the first covering as to be self-opening or self-closing when a head of the sewing machine is in a collapsed position or in an upright position.

Abstract: A guide channel for receiving and guiding a guide chain for energy lines has a bottom and two sidewalls. In order to provide a lightweight and noise-reducing guide channel that is easily assembled, the sidewalls are made of a composite material that includes thin cover plates and an elastic core.

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 damping device includes a curved channel plate having a bottom end pivotally disposed around the peripheral flange of the flywheel of a rotary gymnastic apparatus and linked to a spring-supported hook at one end of a rotary knob-controlled traction device, two friction pads bilaterally fastened inside the curved channel plate and controlled by the traction device to touch the peripheral flange of the flywheel in giving a damping force to the flywheel.

Abstract: A chain, hub, spoke and derailleur guard for a bicycle comprised of an annular member (1) formed substantially of a solid substance, formed with a large central opening (2) for passing over a bicycle drive wheel hub and a multi gear gear hub secured thereto, the guard is formed with hooking rearward portions (4) for locking behind the radiating bicycle wheel support structure centrally securing the guard to the wheel.

Abstract: This invention is directed to a protector for a single or front chain sprocket of a bicycle. The sprocket assembly is mounted on a pedal shaft and is non-rotatably coupled with a sprocket-side pedal. The protector comprises a disc which is adapted to be fixed by a fixing mechanism with respect to the pedal shaft and having a diameter which is sufficient for preventing soiling or damaging clothing or body portions of the user of the bicycle.

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 multistage front gear apparatus for a bicycle having a device for restoring a chain having fallen off which includes a shelf portion (51) extending axially of the rotary shaft, a chain engaging portion (52) extending from a free end region of the shelf portion radially outwardly of the rotary shaft, and a guide portion (53) disposed peripherally of the shelf portion for guiding the chain away from the chain engaging portion. The chain engaging portion (52) has opposite edges in a rotating direction extending substantially at right angles to the shelf portion. The guide portion (53) is formed on peripheral side surfaces of the shelf portion, and includes inclined guide surfaces extending from positions of connection to the chainwheel to peripheral regions of the shelf portion.

Abstract: In accordance with the present invention there is provided a a combination lock ring and chain guard for the outer most gear cog of a multi gear gear hub of the type retained on the drivewheel of a bicycle by a lock ring;said combination lock ring and chain guard comprised of an annular member 2 having an internally threaded central opening 1 for mounting the guard on the drive side of a bicycle drivewheel hub to the outside of a multi gear freewheel mounted on the drivewheel hub, the perimeteral edge of the annular member provides a high gear overshift chain guard supported to the outside, parallel to, and above and adjacent the path of the teeth of the outer most gear cog of the multi gear bicycle gear hub.

Abstract: A guide channel for receiving and guiding guide chains for energy lines has a bottom that is divided in the longitudinal direction and has a width that is adjustable to varying sizes of guide chains to be guided. The guide channel is assembled from a system of prefabricated parts. Channel sidewalls of varying heights are provided. The bottom is comprised of two profiled carrier elements having a meander-shaped profile that, in the longitudinal direction, are arranged in a mirror-symmetrical arrangement relative to one another in a common horizontal plane. Each profiled carrier element is comprised of three U-shaped profiles. A first and a second one of the U-shaped profiles are open in an upward direction, and a third one of the U-shaped profiles is open in a downward direction. The third U-shaped profile is connected between the first and the second U-shaped profiles.

Abstract: An edger having a driving device for operating a rotary blade, the driving device including a driving pulley; a pulley to be driven; a driving belt arranged between the two pulleys; a swing arm having the center of its swinging motion at a position different from the center of rotation of the driving pulley; a rod slidably supported by the swing arm and supporting the pulley to be driven; a spring for urging the rod in a direction in which the distance between the shafts of the two pulleys is elongated; a drive-side pulley cover and a driven-side pulley cover.

Abstract: A pulley guard is arranged for mounting to an interior surface of projecting flanges mounting an associated pulley structure, wherein arcuate discs are arranged in confrontation in an edge-to-edge relationship with outer edges of the first and second pulley flanges to prevent the binding and abrasion of a pulley belt preventing slippage relative to an associated pulley.

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: The invented interconnect casing includes first and second flanges, a spacer associated with and intermediate the first and second flanges, an aperture in the spacer, and a bracket arm attached to one of the flanges for supporting a driven device. The invented power divider includes an engine having a drive shaft, a first flange mounted to the engine adjacent the drive shaft, a second flange mounted to a first device, a spacer that is associated with and intermediate the first and second flanges, an aperture in the spacer allowing access to the drive shaft, and a bracket arm attached to and extending from one of the flanges for supporting a second device.

Abstract: A rotating stack mechanism of small bulkiness and ease of manufacturing comprises cast metal plates 1 with two concentric half-circular stiffening ribs 13, an embossing 2 and shaft 4 located eccentric from the ribs for support of a sprocket wheel 7. The sprocket wheel has a toothed crown 5 and a cavity 6 so formed that the embossing 2 supports the sprocket wheel when pushed against the plate 1 surface. The plates further comprise grooves 12 for embedding a pair of chain guiding sections 10 which operate to entrain chain 8 around the sprocket wheel.

Abstract: A protector device for the sprocket of a bicycle. A protector device has a curved arcuate configuration that underlies the profile plane of the sprocket when the device is installed on a bicycle. Two struts extend upwardly from the protective device at its leading and trailing ends. Clamps are carried on the upper ends of the struts for attaching the protective device to the bicycle frame. One of the clamps has a swivel connection to the associated strut, to enable the device to be operatively attached to a range of different bicycles.

Abstract: A single output drive shaft of a tractor is converted to multiple output drive shafts. A housing is firmly mounted to the tractor and a drive shaft extends through the housing and is connected at its forward end to the tractor while the rear output end is connected to a tool mounted to the housing by a bracket similar to that mounting the housing to the tractor. A sprocket chain running through oil in the housing is connected to additional output drive shafts. The output drive shafts are generally arranged in a triangular configuration and the housing has a generally similar shape.