Abstract: An engine crank pulley structure disposed at a vehicle front side of a longitudinal engine includes: a front pulley that transmits crank rotational force to the water pump via a belt; a rear pulley that is disposed at a vehicle rear side of the front pulley and transmits a crank rotational force to a compressor via a belt; and a connecting portion that connects the front pulley and the rear pulley, the connecting portion crushing and deforming in a vehicle front-rear direction as a collision load toward the vehicle rear side is applied to it. An outer diameter of the front pulley is smaller than an inner diameter of the rear pulley.

Abstract: A horological mobile component, including around an axis, a first element including a first shoulder and a second element including a second shoulder which cooperates by friction with a third shoulder that is included by a third element interposed between the first element and the second element, this third element includes a fourth shoulder cooperating by friction with the first shoulder or being driven onto this first shoulder, and the diameter of the third shoulder is at least double the diameter of the fourth shoulder, and the second element includes a main hollow defining at least two bearing surfaces each including one or two bearing sectors belonging to the second shoulder.

Abstract: Retainer rings for locking in an N-sided shaft to restrict axial movement of components sandwiched between them. The retainer rings have inner edges bounding a central bore. The inner edges are defined by a series of N arcs whose distance from the bore's center decreases gradually along the inner edge from a first end to a second end of each arc. The rings are slid on to the shaft with the corners of the shaft aligned with the first ends of the arcs. Then the rings are rotated on the shafts toward the second ends of the arcs until the corners of the shafts jam against the inner edges. A special spanner wrench can be used to tighten and loosen the rings on the shaft.

Abstract: In an image printing device, such as a laser printer or ink jet printer, a coupling device for creating a coupling between a rotatable shaft and an interface component, such as a gear. The coupling device is an elongated modified c-shaped body having a portion for receiving the rotatable shaft, and includes integrated hinges that facilitate the coupling device to be spread apart and to receive and interface with the rotatable shaft. The integrated hinges function to compress between the rotatable shaft and interface component substantially inhibiting relative longitudinal movement and wherein a flat on the exterior of the rotatable shaft engages with a flat on the interior the interface component, to additionally inhibit relative rotational movement between the interface component and the shaft. The shaft further includes a plurality of ribs that extend from the rotatable shaft into the coupling device providing additional reduction in rotational movement between the shaft and the interface component.

Abstract: The invention relates to a belt pulley for the output shaft of a gear being driven by an electric motor, with a support for a drive belt at the outer periphery and a receptacle for an axle in the centre, where the receptacle for the axle involves a first region, the profile of which is in such a way noncircular, that between an axle being insertable therein and the belt pulley no slip is possible, and wherein the receptacle for the axle involves a second region including at least one recess apt to allow an elastic part of the axle to snap in a form-fit way when inserted into the belt pulley through the first region. The invention further relates to a gear, to an electric motor, and to an output shaft.

Abstract: A sheet transport apparatus includes a transport roller for transporting a sheet to the processing section, a driving motor for driving the transport roller, and a driving transmission mechanism. The driving transmission mechanism includes a rotary shaft, a transmission rotary member having a circular fit hole, a holder member with a press-fit hole having a curved part and a flat part, and a coupling mechanism for coupling the holder member and the transmission rotary member. The rotary shaft includes a fitting part having a circular cross section at one end side to be fitted into the circular fit hole, and a press-fit part having a curved part and a flat part press-fitted with the press-fit hole. The coupling mechanism includes a convex portion formed on a side of the transmission rotary member, and a concave portion formed on a side of the holder member press-fitted with the convex portion.

Abstract: A discontinuous linear drive comprises a guiding component and an engaging means. The engaging means engages in a member to be driven and guided by guiding components in at least two places by means of a respective movable engaging component. The member to be driven is driven by a phase-shifted effecting and releasing of the engagement of the moved engaging components.

Abstract: A bicycle transmission has among other things a rear hub with a freewheel with an outer freewheel body supporting a plurality of sprockets. A chain is shifted between adjacent pairs of the sprockets by a rear derailleur. Each sprocket includes inner attachment portion and a chain engaging portion having annular root portion and a plurality of teeth. The largest (low gear) sprocket has one or more recesses in the lateral surface that faces towards the center of the bicycle so that the largest (low gear) sprocket overlaps the abutments of the outer freewheel body.

Abstract: In the power transmission device having a torque limiting function for shutting off the transmission of an excessively high torque between the pulley 1 and the rotary shaft 5, the hub 2 and the rotary shaft 5 are connected to each other by means of screw engagement between the female screw portion 2d, which is formed on the inner circumferential face of the hub 2, and the male screw portion 5d which is formed on the outer circumferential face of the forward end portion 5a of the rotary shaft 5, and the seal means 4 for sealing between the hub and the rotary shaft is provided adjacent to the front face or the front and rear faces of the screw engaging portion. The torque limiting function may be provided on the rotary shaft side or the hub side.

Abstract: The present invention provides a pulley assembly adapted to transmit torque from a drive pulley to first and second driven accessories. The pulley assembly generally includes a housing and an auxiliary drive component. The auxiliary drive component is rotatably supported by the housing and adapted to be coupled to the first driven accessory. The auxiliary drive component includes first and second annular drive surfaces. The first drive surface is adapted to be drivingly coupled to the drive pulley and the second drive surface is adapted to be drivingly coupled to the second driven accessory.

Abstract: A motorcycle is described which has a frame and a rear wheel attached to a driven pulley. A drive pulley is rotatably mounted to a rigid bracket attached to the frame such that a relative orientation between the drive pulley and the driven pulley is maintained substantially constant. A drive belt is coupled to the drive pulley and the driven pulley such that a rotation of the drive pulley imparts a rotation of the driven pulley. A transmission output gear is attached to an output of a transmission, and a drive coupler is provided as an interface between the transmission output gear and the drive pulley.

Abstract: When the connecting rod 10 made of material of high strength, the mechanical strength of which is higher than that of the inner hub 22, is incorporated into between the cylindrical boss portion 31 of the inner hub 22 and the compressor shaft 2, an outer diameter of the compressor shaft 2 can be made to be smaller than that of the conventional fastening profile. Even when the outer diameter of the compressor shaft 2 is reduced, it is possible to solve the problem of lack of the mechanical strength of the inner circumferential screw portion 35, 44 and the outer circumferential screw portion 43, 3 with respect to the axial fastening force given to the inner circumferential screw portion 35, 44 and the outer circumferential screw portion 43, 3.

Abstract: A power transmitting mechanism transmits power from an engine to a drive shaft of a compressor. A pulley is supported by the compressor and is coupled to the engine. A hub is attached to the drive shaft. Rollers are located on the pulley. Elastic transmission arms are located between the pulley and the hub. The distal end of each arm is curved, and the proximal end is coupled to the hub. When the rollers are engaged with the arms, power is transmitted between the pulley and the hub. When, due to excessive torque, the rollers escape from the corresponding arm, power transmission between the pulley and the hub is disconnected. The distal ends of the arms are movable in the radial direction. When the rollers disengage from the corresponding arms, the distal ends of the arms move radially such that the pulley and the hub relatively rotate without interference by the arms.

Abstract: An apparatus and method for attaching a wheel to an axle. The apparatus comprises a wheel with a hub for insertion into an indentation in the end of the axle and a non-cylindrically-symmetrical stud attached to the axle that is concentric with the axis of rotation of the wheel and axle, attaching the wheel to the axle.

Abstract: A pulley housing with a cylindrical exterior surface and a cylindrical interior surface is provided. A pair of shafts at opposite ends of the pulley housing mount the pulley housing for rotation about the pair of shafts. A motive source operatively connected with the pulley housing is adapted to drive the pulley housing in rotation. A wiper is positioned and adapted to wipe thermal transfer fluid from the interior surface of the pulley housing and to direct the thermal transfer fluid into thermally conductive contact with the motive source, preferably with both sides thereof, such that the thermal transfer fluid absorbs heat directly from the motive source. A method of cooling a conveyor pulley includes redirecting the thermal transfer fluid into thermally conductive contact with the motive source such that heat is directly transferred from the motive source to the redirected thermal transfer fluid.

Abstract: A motor vehicle torque transfer case with integral constant velocity (CV) joint including a constant velocity (CV) bell, a chain sprocket, a speed sensor tone wheel, a chain sprocket splined to the chain sprocket spindle, two (2) support bearings, a single seal, a constant velocity (CV) inner race and cage assembly, a front output shaft, and a constant velocity (CV) boot. The constant velocity (CV) bell, the chain sprocket spindle and the speed tone wheel are preferably of one-piece construction. The constant velocity (CV) joint is preferably of a double offset plunging design, although other designs for the constant velocity (CV) joint could be utilized if desired. The spline connecting the chain sprocket to the chain sprocket spindle is preferably a slip fit and a drawn cup needle roller bearing is pressed into the torque transfer case housing.

Abstract: A support body used in a tensioning device includes a support element and a bottom plate. The support element is attached to the bottom plate in a radially and axially form-fitting and fixed manner through use of a plastic element that is molded into place by extrusion. The plastic element engages a groove formed in the outer surface of the support element and also engages through holes formed in the bottom plate.

Abstract: A sewing machine with a balance wheel (1), which is detachably fastened on the arm shaft (15). The balance wheel (1) is secured against rotation by the cooperation of a carrier pin (17) transversely protruding from the arm shaft (15) with two axially extending recesses (7) in the balance wheel hub (1), which said recesses are open at one end. The wheel is secured axially by the cooperation of an elastic finger (9), which is fastened to the balance wheel (1) and has a mounting hole (12), with the carrier pin (17).

Abstract: A driving apparatus comprises a rotation member, a shaft and a restriction member. The rotation member has a shaft-receiving portion. The shaft is fitted into the shaft-receiving portion so as to permit rotation of the rotation member relative to the shaft. The shaft has a protrusion projecting in a direction substantially perpendicular to an axial direction of the shaft. The restriction member prevents the rotation member from deviating in a projecting direction of the protrusion.

Abstract: A ball bearing cage fitted in a pulley main body having peripheral surface to be contacted by a belt. The pulley bearing includes a raceway surface and grease. The cage has pockets for receiving balls which are circumferentially disposed with unequal pitch such that when some of the vibrating balls impart channeling to the grease on the raceway surface, the other balls ride on the grease on the raceway surface. This suppresses or prevents the occurrence of cold peculiar sound.

Abstract: A pulley suitable for use in a V-type belt drive power train, the pulley including an integral securing mechanism in the central bore thereof for engaging a corresponding securing mechanism on the shaft of the device to be driven by the pulley, the integral securing mechanism preferably being corresponding screw threads, with a method of manufacturing the pulley from cylindrical bar stock as a unit including the generation of the V-belt grooves, the central bore, forming the integral securing mechanism in the central bore, and cutting off the pulley to provide a one-piece pulley of substantially simplified design.

Abstract: Two auxiliary machines are mounted in tandem to an automobile and coupled together by a power transmitting device to transmit power of the engine to both of two auxiliary machines. The power transmitting device includes a rotor, a first hub portion adapted to be operably connected to the rotor and fixed to the drive shaft of the first auxiliary machines and a second hub portion adapted to be operably connected to the rotor and fixed to the drive shaft of the second auxiliary machine First and second hub portions are rotatable simultaneously or separately. An electromagnetic clutch can be inserted in the power transmission device.

Abstract: A chain and sprocket system includes a plurality of chains and sprockets. The system includes a central shaft, two chains, and two identical sprockets. Although the two sprockets have identical size, shape, and features, they can be assembled onto the central shaft in different orientations. These orientations are achieved by rotating one sprocket with respect to the other. Assembling one sprocket onto the shaft in a different orientation from a second sprocket results in a system where the outer sprocket teeth of one sprocket are phased with respect to the outer sprocket teeth of the other sprocket. In this way, a phased chain and sprocket assembly is composed of identical sprockets, which eases manufacture and assembly.

Abstract: A hub is spun rolled formed of a portion of metal radially displaced from a side of a disc of sheet metal. An annular collar formed of an annular part of the disc extends inward of the hub and creates a blind bore. The collar is integral with the hub and is formed of the same sheet metal. The so formed hub that is integral to a web formed of the disc, and the collar; the web may be connected to a rim, or the extremity of the disc may be shaped into a rim to form a pulley.

Abstract: A pulley is provided which is capable of being used as an alternator pulley. The pulley has a central hub portion for connecting the pulley to a shaft and a belt engaging portion disposed radially outward from the central hub portion. The central hub portion and the belt engaging portion are injection molded from a thermoplastic polyphenylene sulfide polymer material. The pulley provides approximately a 75% weight reduction in comparison to conventional metal pulleys used in automotive applications. The pulley is injection molded having a sprue gate located substantially in a center of said central hub portion. A bushing is optionally provided in a center opening in said central hub portion.

Abstract: A pair of sprockets for use in a double chain and sprocket coupling for transmission of torque between shafts which are in approximate axial alignment with each other, and the abutting ends of which are closely spaced. Each of the sprockets is formed as one piece, and then cut into halves but for a web which is broken to separate the halve. The broken web serves to properly align and space the halves when placed over the end of a shaft to be coupled, and clamped thereon.

Abstract: A chain and sprocket system includes a plurality of chains and sprockets. The system includes a crankshaft, an idler shaft and two overhead camshafts. The two sprockets on the idler shaft that connect by chain to drive the camshafts are phased or offset with respect to each other to alter the impact and chordal action generated noise. These idler camshaft sprockets and the idler sprocket of the crankshaft are all manufactured separately and then placed together on a spline or hub. In this way, the idler sprocket assembly consists of four parts, which eases manufacture and assembly.

Abstract: A lamination notching apparatus for forming dynamoelectric core laminations with winding slots includes a sprocket and drive belt system connecting an indexer to the drive table shaft of a lamination table. The indexer is driven from a punch drive and has an output sprocket. A coupling unit has a first sprocket and a second sprocket mounted on a common same shaft and connected by a passive clamp unit to produce a one-to-one rotation. Drive belts connect the indexer sprocket to the first sprocket and the second sprocket to the drive sprocket table shaft. The sprockets are formed with a special tooth profile to eliminate tooth-to-belt clearance and backlash with a standard HTD profile belt for precise rotary motion. The indexer is movably mounted for tension adjustment of the drive belt. The passive clamp unit includes telescoped tapered sprocket hubs on a tubular shaft, with a spring-loaded clamp nut and bolt passing therethrough.

Abstract: An adaptable mounting arrangement is provided for securing a shaft to a hub of a speed reducer or other mechanical power transmission device. The hub is configured having a pair of tapered interior surfaces converging to a location approximately at the midpoint of an axial bore defined in the hub. A pair of counterbores are also defined in the interior surface of the hub at opposite axial ends thereof. One or more tapered sleeve members may be provided to engage the tapered interior surfaces defined in the hub. Alternatively, annular bushings may be provided in each of the counterbores when the hub is to be secured to a screw conveyor drive shaft or the like.

Abstract: A method of constructing a pulley comprising a shaft, annular members and a rim, wherein the shaft has an integral tapered surface of a uniform slope near each end. The annular members have an interior periphery of a slightly larger diameter than the outside diameter of the shaft. The interior periphery of the annular members also includes a tapered surface with substantially the same slope as the outside diameter of the shaft at its tapered surfaces. In constructing the pulley, the shaft is inserted through the rim. The annular members are then placed over the ends of the shaft and displaced axially toward the tapered surfaces of the shaft until the tapered surface of the annular members are mateably engaged over the tapered surfaces of the shaft. A compressive interference connection is thereby created between the tapered surfaces. A continuous weld is placed all around the outside face of the annular member where the annular member intersects the shaft.

Abstract: The pedal cranks (32, 34) on the propulsion group of a bicycle or similar rotate independently with respect to one another around axis (a), which is parallel and spaced at a distance (d) from axis (b) of a chain drive sprocket wheel (28). Each pedal crank is constrained to rotate together with the sprocket wheel but is free to travel over the same. An adjustment for the position of the sprocket wheel, around the axis of the pedal cranks, is provided for.

Abstract: Apparatus especially useful in internal combustion engines for adjusting the timing and including a shaft having a longitudinal axis and mounted for rotation about said axis with a circular drive member carried by the shaft. An adjustable key assembly is located between the shaft and the drive member for conducting drive forces therebetween while permitting selective relative angular adjustment. The adjustable key assembly includes a key member having a first end pivotally engaged with one of the shaft and drive member and a second end slidably engaged with the other of the shaft and drive member. The second end of the key member and the other of the shaft and drive member include cooperating inclined surfaces for producing relative angular movement between the shaft and the drive member when the key member is selectively pivoted about the first end.

Abstract: A pulley, in particular a free-running pulley, comprises a pulley body having an throughgoing opening for mounting on a shaft end of a machine and provided with an inner thread cooperating with a counter-thread of the shaft end. The throughgoing opening has a portion which is arranged forwardly of the inner thread and being provided on its periphery with a contour repeating at regular distances from one another and adapted for a form-locking engagement of a tool for tightening or loosening the pulley body on the shaft.

Abstract: A plastic pulley and stub shaft are integrally formed with one another and used as a unitary component in the drive train of a clothes washing machine. In the washing machine, an electric motor is used to drive both an agitator mechanism and a water pump of the washing machine. The pulley has a co-axial bore on one side for receiving a motor shaft of the electric motor. The pulley also has a circumferential groove configured for receiving a belt therearound which is, in turn, connected to the agitator mechanism of the washing machine. The stub shaft extends co-axially from the opposite side of the pulley as the bore. The stub shaft is configured for engaging an impeller of the water pump for driving the water pump. Thus, the electric motor is operatively connected to and drives both the agitator mechanism and the water pump via the integral plastic pulley and stub shaft component.

Abstract: A new type of the compact freewheel body for bicycle includes a freewheel casing, a ball seat, a hub, two rows of steel balls, an adjusting ring and a clutch located in the hub. The ball ring at the top of a convention freewheel casing is moved to the bottom to become a ball seat. The distance between two rows of steel balls is increased. The freewheel body can be made more compact. Smaller gear seat may be used and thus increasing the speed ratio and improving mechanical strength of the gear set. The wobbling of the freewheel can be effectively reduced to make the freewheel running and gear shifting smoother and more reliable.

Abstract: A chain and sprocket system includes a plurality of chains and sprockets. The system includes a crankshaft, an idler shaft and two overhead camshafts. The two sprockets on the idler shaft that connect by chain to drive the camshafts are phased or offset with respect to each other to alter the impact and chordal action generated noise. These idler camshaft sprockets and the idler sprocket of the crankshaft are all manufactured separately and then placed together on a spline or hub. In this way, the idler sprocket assembly consists of four parts, which eases manufacture and assembly.

Abstract: A shaft-carried speed reducer is provided having an adaptable mounting arrangement. The hub of the speed reducer is configured having a substantially cylindrical axial bore. At least one annular groove may be defined in the axial bore to receive a snap ring when desired. A removable adapter having a tapered interior surface may then be situated in the hub bore to abut the snap ring. As an alternative to such a snap ring, an annular flange may be provided on the removable adapter to engage an end face of the hub. A tapered sleeve member engages the tapered interior surface defined on the removable adapter to effect securement of the hub to the shaft. If a single adapter is used, it may be inserted from either side of the hub in some configurations. Further, some configurations permit a pair of adapters and corresponding sleeve members to be used. The adapter and snap ring, if any, may be removed when the hub is to be secured to a screw conveyor drive shaft or the like.

Abstract: A drive assembly for rotating a shaft of a pulley-driven device is disclosed together with a method of making the drive assembly. The method includes the steps of forming a pulley of lightweight non-ferrous metal having a web portion, forming a radially inward portion of the web portion into an axially extending annular portion, mounting a connecting ring of ferrous metal having an annular groove in an interior end surface thereof over the axially extending portion of the web portion so that a free end of the axially extending portion extends adjacent the annular groove, cold-forming the free end to fill the annular groove, welding a hub of ferrous material to the connecting ring and machining a central axial bore through the web portion and the axially extending portion thereof and the hub.

Abstract: A device for steadying a first balanced rotatable member relative to a second balanced rotatable member. A steadying tool is applied to the first balanced rotatable member while another tool precision torques the second balanced rotatable member. An element having a surface placed against the first balanced rotatable member. The element includes a faceted aperture capable of locking interaction with the steadying tool. The element also includes an axis aperture to permit torquing of the second balance rotatable member with the torquing tool. The element is configured to not disrupt the balance of the first and second balance members. The element may be fixed to the first balanced rotatable member during use.

Abstract: A pulley spacer for use with internal combustion racing engines that is a circular disc of a predetermined thickness for spacing the racing pulley from the engine to retain alignment of the racing pulley-water pump pulley drive belt. The disc includes an obverse face and a reverse face. The disc includes a centrally located aperture through the disc and the obverse face includes a groove of a predetermined width concentric with the aperture. The reverse face includes a circular flange of a predetermined width concentric with the aperture. The groove and circular flange mate, with very tight fit, with a corresponding flange and groove on the racing pulley and a standard balancer, respectively, to allow transmission of engine torque without shearing the bolts used to assemble the racing pulley-pulley spacer-standard balancer assembly.

Abstract: A drive assembly for rotating a shaft of a pulley driven device. The drive assembly includes a hub in the form of an annular body of ferrous metal having a groove in an external periphery thereof. A belt driven pulley is provided in the form of ferrous sheet metal and has a web portion. A structural connection is defined between the hub and the pulley web portion such that the hub is in fixed, abutted relation with the pulley web portion. The hub and the pulley web portion have a bore therethrough defining a single, machined annular surface. The annular surface is constructed and arranged to engage a periphery of the shaft in an interference-fitted manner so as to maintain torque transfer to the shaft in the event of failure of the structural connection. The groove is constructed and arranged to be operatively engaged by a pulling tool for removing the annular surface from engagement with the shaft.

Abstract: A conveying apparatus includes first and second shafts each having a sprocket mounted thereon for rotation with the shafts. A conveyor belt is engaged with the sprockets. A retaining clamp is mounted on one of the shafts adjoining one of the sprockets. The retaining clamp includes a body shaped to fit loosely around the shaft and a force-applying member disposed on the body for pressing the body against the shaft to prevent movement of the body along the shaft.

Abstract: A conveyor drive apparatus comprising a shaft having sprockets mounted thereon for rotation with the shafts. A conveyor belt is engaged by the sprockets. A key includes a body shaped to fit loosely in a groove along the length of the outer surface of the shaft. The key further includes a force-applying member disposed on the body for applying a force against the shaft and pressing the body against the sprocket to lock it in position on the shaft. The sprocket can further have a slot through its central bore wall in which part of the key can reside to rotate the drive member with the shaft.

Abstract: A generally cylindrical hub spacer having inwardly and outwardly extending protrusions is used to rotationally interconnect a deck pulley to a spindle assembly in a lawn mower.

Abstract: A conveyor sprocket formed of a plastic material is mounted on a keyed drive shaft of circular cross section. Within the hub of the conveyor sprocket, an insert, formed of a relatively harder or more durable material, engages the key. The insert resists deformation and helps increase the torque capacity of the conveyor sprocket. In one embodiment, the keyed shaft includes two diametrically opposed keys and the conveyor sprocket includes two diametrically opposed inserts and engagement therewith. In one embodiment, the key does not project beyond the ends of the conveyor sprocket hub.

Abstract: A mounting method for split sprockets which embodies radial slots in all mounting bolt positions; except the two mounting bolt positions disected by the split ends of the sprocket, the aforementioned radial slots extending from the center bore outward to; and including all, remaining mounting bolt positions which allows removal and replacement to be accomplished in a rotatable fashion, replacement being further facilitated by orientation openings adjacent to a common sprocket split line, one in each sprocket half.

Abstract: A split sprocket and retainer assembly are provided for mounting on the drive shaft of a chain drive system, such as a conveyor drive system. The sprocket is split diametrically into two sections and includes a hub. Cross fixing bolts across the hub secure the two sprocket sections together on the drive shaft. A one-piece retaining ring is positioned over the sprocket hub in snug engagement, and overlying the bolts. The retaining ring absorbs the thrust force generated by the driving torque tending to radially separate the sprocket sections during operation of the drive system. A split outer retainer collar is mounted so as to abut the retaining ring and to secure it in position against axial shifting and backing off the hub.

Abstract: An improved mechanism for retaining a hub-containing element such as a pulley, fan, gear or the like, on a shaft wherein the shaft has a circumferential groove formed near its end and the element has a hub to engage the shaft with a plurality of flexible fingers formed around and extending onward from the hub. The fingers have a pawl disposed to drop into the circumferential groove on the shaft and thereby secure the element in place. The pawls can be of various configurations so as to both align properly with the groove and to accommodate tolerances in the shaft assembly. A protective collar surrounds the fingers and extends axially from the hub to protect the fingers from entanglement and breakage during manufacture, storage, or transportation. The shaft also has splines formed therein proximate the groove that matingly engage corresponding keyways formed inside the hub so that the shaft positively mates with the hub.

Abstract: A belt drive of an electrical machine has a belt pulley arranged on a driving end of a machine shaft, a coupling connecting the drive pulley with the machine shaft, the coupling having at least one elastic coupling part provided between a driving side and a driven side of the coupling, a mounting part having a bearing pin and mountable on a machine aggregate which is connected with the electrical machine, a drive belt connecting the mounting part with the machine aggregate, and an inner bearing. The belt pulley in order to take up belt pull forces, is mounted through the inner bearing on the bearing pin of the mounting part which is mountable on the machine aggregate through the drive belt.

Abstract: Split sprocket wheels having interlocking tabs for forming a sprocket wheel assembly that is easy to install on and remove from a drive or idler shaft of a belt or chain conveyor. The invention provides thin, durable sprocket wheels split into at least two sectorial sections along seams extending from a central bore to an outer engagement surface. Mating tabs and receptacles at the edges of adjacent sectorial sections interlock the adjacent sections radially and circumferentially. Holes in the vicinity of the mating tabs and receptacles of adjacent interlocked sections admit locking means for holding the sectorial sections together in axial compression. The sprocket wheels can be ganged together at selected positions along a shaft with their bores in coaxial alignment by means of spacers interconnecting consecutive sprocket wheels along the shaft.