Abstract: A lightweight damper pulley is provided which can be produced in a simple manner. The damper pulley includes a central portion, including a cylindrical boss portion to be fixed onto a rotary shaft, a main portion extending radially outwardly from the larger diameter part of the cylindrical boss portion and a central flange bent to extend horizontally from an outer periphery of the main portion. This forms a substantially U-shaped cross-sectional profile. The pulley also includes a belt retaining portion made of metal plate that also has a substantially U-shaped cross section profile. This space is determined between an outer belt supporting wall, an inner belt portion flange and a radially extending connecting wall. The pulley is constructed by reversing the two U-shaped profiles or dissecting the belt retaining flange to the interior of the central flange, with an elastic, damping ring forcefit therebetween. The belt retaining flange can also be moved radially outwardly to compress the elastic.

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 method for producing a damper pulley having a boss portion to be press-fitted onto a rotary shaft, an annular main portion extending from the boss portion, a flange portion formed along an outer periphery of the main portion, a ring-shaped damper-mass member located outside the flange portion and a rubber body interposed between the flange portion and the damper-mass member includes the steps of integrally forming the boss portion, the main portion and the flange portion of a metallic plate such that the main portion has a curved section, and has a radial length greater than a straight line distance between the boss portion and the flange portion, placing the rubber body between the flange portion and the damper-mass member, and enlarging the diameter of the flange portion to elongate the main portion having a curved section, thereby the enlarged flange portion presses the rubber body against the damper-mass member.

Abstract: A belt pulley with a substantially cup-shaped profile that is delimited on one side, in at least the axial direction, by an integrally shaped-on rim flange is disclosed. The rim flange is configured as the hub ring of a torsional vibration damper, the hub ring being connected, by means of a damping ring made of elastomeric material, to an inertial ring.

Abstract: A tooth wheel intended to co-act with a transmission member with transmission elements, which tooth wheel bears a number of protrusions arranged on the periphery which are each provided with at least one contact surface for co-action with the transmission elements, including self-adjusting protrusions for adjusting the pitch of the contact surfaces, wherein each protrusion can swivel substantially in the main plane of the tooth wheel round at least one centre outside the connecting line between the centre line of the tooth wheel and the zone of engagement between the contact surface and a transmission element.It is an object of the invention to embody a tooth wheel such that the distribution of the forces over the protrusions is better in the case of individual variations of the relevant pitch distances.

Abstract: A lightweight pulley is provided which can be produced in a simple manner at low cost. The pulley has a cylindrical boss portion, an annular main portion which extends radially outwardly from the cylindrical boss portion, and a ring-shaped belt retaining portion. The boss portion and the main portion are integrally formed from a thin metal plate by press-forming, thereby reducing the weight of the pulley, and facilitating the production thereof. The peripheral wall of the boss portion is alternately bent inwardly and outwardly in its peripheral direction to form a plurality of ribs, thus increasing the strength of the boss portion. A method of manufacturing the pulley is also provided.

Abstract: An idler pulley and bearing assembly for handling the drive belt of a front end accessory drive system of an internal combustion engine includes a bearing having an outer race and an inner race with an aperture for extending therethrough, and a mounting structure for securing the outer race of the bearing such that the outer race will not rotate. A pulley mounted upon a shaft extending through the aperture in the inner bearing is attached to the inner race such that the shaft pulley and inner race rotate at the same speed. This construction greatly reduces the rotational speed of the anti-friction elements within the bearing and preserves the bearing's lubrication, so as to prolong the life of the bearing, while reducing noise generated by the bearing.

Abstract: Vibrations of the camshaft or crankshaft of a combustion engine are damped between a composite pulley which receives torque from the engine and one or more sheaves which are driven by an endless flexible member and serve to transmit torque to a pump, a blower, a compressor, a steering wheel mechanism and/or an alternator. The endless flexible member exhibits a certain amount of elasticity and the composite pulley comprises a rotary input device which is driven by the engine and a hollow rotary wheel which has a circular radially inner portion in rolling contact with the periphery of the input device. The outer diameter of the input device is smaller than the inner diameter of the wheel. The latter performs pendulum movements in response to changes in the length of the elastic flexible member.

Abstract: An improved mechanical donut and donut assembly in which donuts made of plastic materials are formed in segments that facilitate installation, removal and/or replacement for manufacture and maintenance. The donuts of the preferred embodiments are made of urethanes, especially polyurethane, while fastening members such as threaded bolts are made of nylon. The relative characteristics of the urethanes and nylon are such as to facilitate a self-tapping feature for the nylon bolt.

Abstract: A belt pulley is described which includes a pulley member and a flanged wheel. The pulley member has a belt-bearing surface and a projection disposed at a position axially adjacent to the belt-bearing surface. The flanged wheel is capable of being assembled separately on the pulley member and includes a spring washer having an inside diameter and an outside diameter. The spring washer is substantially elastically extendable in the area of the inside diameter. The dimensions of the inside diameter are defined such that, upon assembly, the inside diameter elastically extends and touches upon a surface of the projection over at least a portion of the inside diameter such that the flanged wheel is mounted concentrically and non-rotatably in relation to the belt-bearing surface.

Abstract: A drive pulley, in particular, a cable drive pulley for cableways, includes a hub, a rim and a spoke arrangement therebetween. The individual spokes are arranged independently from one another. The spoke design has at least two pairs of spokes, and the distance between connecting points of any pair of spokes is greater at the hub than at the rim. The spokes of a pair of spokes are angularly displaced in relation to imaginary radii emerging from the connecting points on the rim, and between any two pairs of spokes, at least one radial support spoke 7 may be provided.

Abstract: A split power transmission element, such as a sprocket, mountable on a driven shaft. A pair of substantially identical sprocket halves each include a pair of aligned, hollow, fastener sleeves extending diagonally through the plane of the sprocket. A pair of fasteners within the sleeves join the sprocket halves to each other and clamp the sprocket onto the shaft. The diagonal orientation of the fastener sleeves permits convenient disassembly of the sprocket from an upwardly located, axially displaced position. The sprocket halves are substantially identical and can be economically molded using a single mold. A keyway insert distributes driving forces throughout the sprocket hub and increases the maximum torque capacity of the sprocket.

Abstract: Gears with a soft metal hub and a hexagonal coaxial hole in the hub, often need repair. Accordingly the old hub is removed and a new solid plug is pressed in place and welded. A radial face on the plug and the gear are flush. A lock plate is placed on this radial face and wleded along an arc. Then the assembly has an axial circular hole bored therethrough and then a hexagonal hole is broached therein. The lock plate has two ears opposite the weld which receive a bolt.

Abstract: A speed reduction mechanism comprises a drive member rotated by a rotary drive force of a drive source; a fixed member opposing to the drive member; a rotor disposed between the drive member and the fixed member and contacting the drive member and the fixed member and rotated around itself by the rotation of the drive member and revoluted around a rotary central portion of the drive member; and a speed reduction rotary member for rotatably supporting the rotor and rotated around the rotary central portion of the drive member by the revolution of the rotor.

Abstract: A pulley having an axially extending annular belt engaging wall construction including an axial wall portion formed of sheet metal. The sheet metal also forms a circular wall portion integral at one end with the axial wall portion and extending radially inwardly and axially inwardly with respect to the one end of the axial wall portion. The circular wall portion has an annular bend in an intermediate annular area thereof and extends therefrom generally radially inwardly to a hub construction. The entire hub construction is formed integrally from the sheet metal into a cylindrical wall structure extending axially outwardly from the circular wall portion. The cylindrical wall structure has an axial extent greater than the diameter of a shaft engaging interior cylindrical surface thereof.

Abstract: The invention relates to a driving wheel for car engines or the like, incorporating a gear wheel, which is intended to cooperate with a cogged belt, and a pulley attached to one side of the gear wheel and arrested to this. The gear wheel molded from a plastic or similar material having a coefficient of thermal expansion higher than steel's coefficient of thermal expansion and by having a helix of steel or another material with a coefficient of thermal expansion similar to or identical with that of steel embedded in the gear of the wheel radially inside the cogs, whereby the helix has such strength and dimension that it determines the thermal expansion properties of the gear rim.

Abstract: A fixing structure is provided for a motorcycle including a swing arm by which an axle having at either end thereof a drive wheel and a torque damping mechanism fixed thereto respectively is rotatably supported substantially at the central part thereof. The fixing structure fixes a driven sprocket to a transversely inner part of an outside constituting member of the torque damping mechanism. The fixing structure includes a plurality of fixing lugs projectingly formed at predetermined intervals on the outer circumference of the outside constituting member, and a plurality of fixing lugs projectingly formed with a predetermined width on the inner circumference of the driven sprocket to be fixedly fastened in a detachable manner with the fixing lugs of the outside constituting member, respectively.

Abstract: A gear for a link conveyor belt system has a non-circular liner ring between a shaft of the system on which the gear is to be used and a hub of the gear. Preferably, the shaft, the liner ring, and the perimeter of the gear are configured correspondingly, and the dimensional tolerances between the liner ring and gear are relatively loose.

Abstract: A freewheel for a cycle or the like, comprising a hollow body of generally circular shape which receives on its periphery at least one gearwheel retained laterally between two flanges, means also being provided for securing the gearwheel to the body in a manner precluding relative rotation.At least one of the flanges comprises a metal part which is accommodated, by permanent deformation, in a groove on the periphery of the body.

Abstract: The invention refers to wheel-shaped objects such a pulley discs, which incorporate a rigid internal hub, a rigid outer circumferential part and a web interconnecting these parts and being of a material which has a higher coefficient of thermal expansion than the hub and the circumferential part.The invention is characterized therein that the web portion in circular cross-section has a zigzag-like design and that through-grooves are made in the web portion, where this connects to the circumferential part, thus that the material of the web portion at cooling can disengage itself from the circumferential part at these grooves thereby to prevent not desired tensile stresses to develop.

Abstract: A conveyor travels in a helical path and is driven by a plurality of drive sprockets which are mounted on a common drive shaft. Each drive sprocket includes a yieldable portion which moves relative to a ring gear of the sprocket when the conveyor encounters an unyielding resistance. A sensor is activated in response to relative movement of the yieldable portion of the sprocket to provide an indication of which drive sprocket has sensed the resistance to conveyor travel.

Abstract: A moldable, plastic idler pulley is formed of two halves, each having a matching central hub and a radially outwardly extending web with radially disposed strengthening ribs on the outside thereof. The inner side of each central hub has a moldable stepped portion which closely mates the other hub. The stepped portions of each hub and the ribs have no under cuts or reverse bends and may be molded by two simple, axially parting mold elements. After molding, the ribs cooperate with a rotary machine to allow the stepped portions of each hub to be spin welded together. A central bearing may be captured between the hubs during the welding process, if desired.

Abstract: A composite plastic and metal pulley intended primarily for use with an endless drive belt for vehicle accessories, particularly an alternator. The pulley is formed by a hollow cylindrical-shaped molded plastic member having a series of outwardly opening V-shaped belt-receiving grooves on the outer surface thereof. A flat disc-shaped metal member is mounted within the central bore of the plastic member perpendicular to the longitudinal axis thereof. The outer edge of the metal disc is scalloped and is embedded firmly within the plastic to prevent rotation of the disc with respect to the plastic member. A central opening is formed in the disc for mounting the pulley on the extended end of the alternator shaft.

Abstract: A composite pulley construction intended primarily for use with the endless drive belt for vehicle accessories. The pulley is formed of a sheet metal body and has a multi-V-groove belt-receiving formation molded of plastic on an outer cylindrical wall portion of the metal body. The plastic belt-receiving formation has a series of inverted V-shaped projections forming outwardly opening V-shaped grooves located between adjacent pairs of the V-shaped projections and between a pair of outer, spaced belt-retaining annular projections also formed of plastic. The belt-retaining projections extend radially outwardly beyond the crests of the V-shaped groove-forming projections a predetermined distance and reduce sideways movement of the belt with respect to the intervening V-grooves. The outer surface of the cylindrical wall portion preferably is knurled to enhance the bonding of the plastic to the metal surface.

Abstract: An inner rigid pulley core is formed from a plurality of plate members extending radially from a centrally disposed shaft; or a predetermined axis of rotation at which the plate members meet and are connected together in the absence of a shaft. A cylindrical pulley shell is secured to the free ends of the plate members to form with the rigid pulley core a pulley with a face which in total acts as a beam (composite type). In one of the embodiments, where the radial plates are secured to each other, about the predetermined axis of rotation, the axial ends of the plates are extended near the axis of rotation on each end of the pulley to form ears about which an annular ring is secured to form shaft ends to facilitate mounting of the pulley. In another embodiment (where the plates are secured together about the axis of rotation) a cast end bell with stub shaft ends is secured to the pulley core and shell to facilitate mounting of the pulley.

Abstract: A front gear for bicycles comprising a gear main body made of plastics and a metal core embedded in the gear main body. The metal core includes ribs embedded in support arms of the gear main body and a boss having a serrated bore for a crankshaft to fit in and embedded, at its outer peripheral portion other than the inner peripheral portion thereof, in an inner annular portion of the gear main body. One of the support arms has an opening in register with a positioning hole formed in one of the core ribs.

Abstract: A tension roller for belt drives comprises a pin designed as a hollow member and a roller member supported on the pin by way of a rolling bearing, with an inner ring, rolling means and an outer ring supporting the roller member. The pin is formed by two thin-walled sleeves positioned at opposite ends of the bore of the inner ring and the rolling bearing. At least one of the sleeves is provided on the surface thereof with a radial shoulder for emplacement of the inner ring.

Abstract: An improved amusement or game device of the type which has one or more indicia-bearing rotatable reels which are rotated upon initiation of play by a player is disclosed. The game device has an improved main drive mechanism which permits the player to vary the initial rotational speed of the reels in direct proportion to the speed in which an associated operating handle is pulled. A supplemental drive mechanism is included for increasing the speed of the reels if the player fails to pull the operating handle with sufficient force to rotate the reels at a predetermined minimum speed. The device also includes an improved indexing means for stopping the reels in accordance with the operation of the game device. The game device also includes means for absorbing excessing energy that may be provided by a player pulling the operating handle with extraordinary speed or force.

Abstract: A paper tractor for feeding paper of different widths in printers and the like comprises a rotationally driven shaft having mounted thereon a sprocket wheel which engages in perforations in a length of paper to effect lengthwise feeding of the paper in response to rotation of the sprocket wheel. The sprocket wheel is mounted on the drive shaft to undergo rotational movement therewith and is mounted on the drive shaft to undergo axial sliding movement therealong to enable axial positioning of the sprocket wheel to accommodate paper of different widths. The drive shaft has a polygonal cross-section, and the sprocket wheel has a center tubular sleeve formed of plastic and configured to be slideably inserted over the drive shaft so that rotational movement of the drive shaft is transmitted to the sprocket wheel.

Abstract: A drive wheel and sprocket assembly for use in the power transmission of a conveyor device such as a roller conveyor comprises a drive wheel which is mounted on the hub of a sprocket assembly. The drive wheel mounts the hub with a modified spline connection in which a plurality of radially overhanging teeth on the drive wheel are resiliently interlocked with shoulders formed in the assembly hub. In a preferred embodiment, the drive wheel is molded of polyurethane.

Abstract: A sheave for engaging strand materials such as textile fabric yarns and the like. The sheave has spoke members transferring torques to and from a hub under compression and tension loading. The sheave also has an annular strand engaging groove with abutments for enhancing gripping engagement with a strand.

Abstract: A wheel comprising a tread, at least a rim provided on an outer side thereof with one half of an axially assemblable claw coupling, a wheel hub including a wheel bushing fixed axially with respect to and fixed for rotation with the rim and including an axle bushing positioned generally within the wheel bushing and fixed axially and rotatable with respect to the rim, and a hub cap provided with the other half of the axially assemblable claw coupling and adapted to be connected for rotation with a wheel axle.

Abstract: A device adapted for use as a positively driven steering member in a conveying apparatus, having a wheel with a spherically curved inner surface, a hub with a spherically curved outer surface which fits inside of the wheel, and a coupling which secures the wheel to the hub, permitting the axis of the wheel to be rotated relative to the axis of the hub in any direction while restraining relative motion between the wheel and hub about the axis of the hub. This arrangement provides that, when the hub is driven by a shaft passing through its axis, it drives the wheel, regardless of the angle between the hub and wheel.

Abstract: A track roller system includes a replaceable rim assembly made up of two groups of multi-segments held to the hub in axially spaced position by a multi-segment retainer in the central space between the groups of rim segments, the rim segments retained against endwise movement on the hub by central locking surfaces, and the retainers held to the hub by removeable fasteners.

Abstract: An agricultural cutter has in its drive train a pulley for a V-belt. Between the rim of the pulley and the spokes thereof, coil compression springs are provided, so that upon the imposition of high power demand during cutting of an agricultural product, power will be momentarily stored in the spring and then released in connection with the cutting operation.

Abstract: An improved drive assembly for a powered chain saw or the like, which drive assembly includes a drive sprocket having a hub portion centrally and presenting a hub extension at one end for coaxially registering within the centered opening of the end wall of a clutch drum, and an axially extending apertured reinforcing washer disposed between the teeth of the sprocket wheel and surrounding the tips thereof in the region of abutment of the drive sprocket and clutch drum so as to register within the recesses of the sprocket teeth and present an extended joining area therebetween for securing same against separation.

Abstract: A shock-absorbing sprocket or gear assembly or like torsionally elastic device is described having resilient cushioning means interposed between mating lugs of the hub and rim to smooth and dampen torsional shocks and vibrations produced by a power drive train. An improved radial bearing surface is provided which maintains symmetry of the bearing load with respect to the drive, and which ensures concentricity between the hub and rim and keeps the rim from wobbling axially or orbiting radially with respect to the hub during operation. The cushioning means are configured relative to the hub and rim to accommodate angular displacements of at least 9.degree.. A power transmission drive system employing the shock-absorbing sprocket of the invention is also described.

Abstract: A sprocket-wheel, gear-wheel or like wheel, substantially manufactured of a synthetic material, comprising a hub which is divided along a plane which lies perpendicular to the center line of the hub-boring, said hub parts being provided with adjacent recesses for jointly accommodating a toothed ring member and being affixed to one another by bolts or the like to clamp the toothed ring member therebetween.

Abstract: An electromagnetic clutch including a pulley which is rotated by an external power source through a belt or belts for selectively transmitting the rotation of the pulley to a drive shaft by electromagnetically attracting a magnetic armature supported on the drive shaft. The pulley has a magnetic annular body rotatably supported and a belt-receiving groove member of aluminum alloy formed onto the outer surface of the magnetic annular body by die casting and integrated with the magnetic annular body. The construction improves the weight, cost and simplifies the method of production of the pulley without degrading the performance and balance of the pulley.

Abstract: A wheel (16) in a continuous track assembly (12) has a hub (18) and a rim (20) connected to the hub (18). First apparatus (29) engages a track (14) of the assembly (12) to drive an associated work vehicle (10). Second apparatus (42) mounts the rim (20) in a movable relationship to the hub (18). The first apparatus (29) in movable relationship to the rim (20) to substantially absorb and isolate noise created by engagement of the wheel (16) and track (14) to drive the vehicle (10). The rim (20) is movable relative to the hub (18) to substantially isolate impact forces exerted on the wheel (16) resulting from operation of the vehicle (10).

Abstract: A driving wheel for a cycle speedometer which is adapted to engage a driving belt in communication with the cycle speedometer. The driving wheel is attached to the cycle wheel or wheel block by a plurality of radially located resilient hooks.

Abstract: A wheel assembly adaptable for use with a motor vehicle, a light aircraft, and the like, or in a pulley system or gear train. The wheel assembly comprises an axle or spindle-retained hub member, and a removable wheel member that is releasably connected by unique snap/lock pins. The hub member is made of a more dense material than the material of which the wheel member is made. In the adaption for use with a motor vehicle, light aircraft, and the like, the wheel member (with a tire mounted on it) is significantly lighter than the conventional rim-mounted tire, because of the absence of the hub portion; and, therefore, the wheel member can be easily changed or removed by even the weak, the aged, and the handicapped. Additionally, because the customary bolt/nut or lug/lug nut fastening combinations are not used, the wheel member is easy to change or remove, and, as importantly, the need for a "lug wrench" is eliminated.

Abstract: Apparatus for securing a metal hoop onto a metal rim is disclosed which apparatus includes two tightening collars integral with the rim, the collars and the metal hoop having conical shoulders and conical bores, each with the same angle of inclination, the conical shoulders being deformable by the action of the conical bores upon tightening the collars against the hoop so that no play remains between the hoop and the rim.