Abstract: A bicycle rear sprocket assembly comprises a plurality of bicycle sprockets comprising a first sprocket and a second sprocket. The first sprocket includes a first opening having a first minimum diameter that is smaller than a minimum outer diameter of a sprocket support body of a bicycle rear hub assembly. The second sprocket includes a second opening and at least ten internal spline teeth. The second opening has a second minimum diameter that is equal to or larger than the minimum outer diameter. The at least ten internal spline teeth are configured to engage with the sprocket support body of the bicycle rear hub assembly. The at least ten internal spline teeth include a plurality of internal-spline driving surfaces each including a radial length. A total of the radial lengths of the plurality of internal-spline driving surfaces is equal to or larger than 7 mm.

Abstract: A hygienic, cleanable conveyor roller for use in a conveyor includes a segmented hub, a plurality of spokes and a rim for contacting a conveyor belt. The segmented hub comprises a plurality of arcuate segments in different axial planes connected to each other. The conveyor roller is mounted upon and rotatable about a mounting shaft that may axially constrain the roller. During a single revolution of the conveyor roller about the mounting shaft, all surfaces of both the conveyor roller and the mounting shaft are fully exposed, allowing the surfaces to be cleaned in place, without requiring removal of the conveyor roller from the mounting shaft.

Abstract: A multipart sprocket wheel engages modular belt modules in a conveyor belt. Each multipart sprocket wheel has two or more periphery elements. Each element has an outer edge and an inner edge. Sprocket teeth are provided on the outer edge. The inner edge has an engagement surface. Each element has fasteners for being fastened to an adjacent periphery element. Two or more periphery elements' outer edges form a full circle. One or more adapter members are used. Each adapter member has an outer face and an inner face. The outer face firmly engages the inner edge of one or more periphery elements. The inner face engages a conveyor drive axle.

Abstract: Chain-rings set for bicycle including a first chain-ring and a second chain-ring, this latter formed by segments, which includes displacement means with axial component of the segments with respect to the first chain-ring such that they can be moved a the chain free zone ZLC and shift the chain among chain-rings, where the axial displacement means are formed by guiding means configured for guiding the segments such that the relative movement of the teeth of the segments with respect to the small chain-ring in its displacement from a first disengagement configuration to a second engagement configuration has a tangential component opposite to the forward direction.

Abstract: The present invention discloses a roller for conveying glass substrate. The roller includes a structure of roller body that is formed by assembling a plurality of roller components together in a disassembleable manner. An axle bore is formed in center of the roller. The present invention also discloses a roller axle assembly for conveying glass substrate, which includes a plurality of rollers and a roller axle. A distance is formed between adjacent ones of the rollers. Each of the plurality of rollers is individually disassembleable. The roller for conveying glass substrate and the roller axle assembly according to the present invention allows any one of the rollers that are mounted to a roller axle assembly to be disassembled individually thereby shortening the time period for replacing the glass substrate roller, increasing the utilization rate of the roller, and lowering down the device maintenance cost.

Abstract: Described herein is a sprocket for interfacing with a perforated material, such as a chain. The sprocket includes a hub and a material-interfacing plate. The hub is shaped to fit around an axially extending shaft, and includes a plurality of hub portions each shaped to fit around a portion of the shaft; and a retaining portion and a hub interlocking portion, each disposed on at least one of the hub portions. The material-interfacing plate has a periphery that is shaped to interface with the perforated material, and includes a plurality of plate portions each shaped to fit around a portion of the hub; and a plate interlocking portion shaped to interlock with the hub interlocking portion and disposed on at least one of the plate portions. The material-interfacing plate is in a secured position when the plate interlocking portion and the hub interlocking portion are interlocked with each other.

Abstract: A chain wheel arrangement for driving or reversing stations of underground scraper chain conveyors, comprising a chain wheel (1), a chain-wheel shaft (3) comprising a splined portion (11) between two offset-diameter shaft stub portions and to which the chain wheel (1) can be fastened in rotational engagement by axial sliding on to it, also comprising bearing shells (5) receiving bearings for the chain-wheel shaft (3), disposed on each side of the chain wheel (1) and adapted to be fastened in bearing-shell recesses, open at the edges, in the side cheeks of the driving or reversing station, also comprising bearing support rings (26) which abut the outer cage (4B) of the bearings (4), and securing means comprising spacer sleeves (16) for axially securing the chain wheel (1) relative to the splined portion (11), in which the spacer sleeves (16) rest loosely between the bearings (4A) and the chain wheel (1), wherein a clamping cover (30) is fastened to at least one shaft end (13) and presses against a clamping sle

Abstract: A drive system monitors the rotary motion of a shaft and transmits the rotary motion to an encoder. The drive system includes a drive sprocket that is coupled to the rotating shaft by a pair of disc-shaped hubs with the sprocket being sandwiched between the two hubs. The sprocket has an axial bore formed therethrough and is split into semi-circular halves to facilitate circumferential mounting of the sprocket on the shaft to be monitored. The two disc-shaped hubs which couple the sprocket to the shaft have axial bores formed therethrough and are split into two segments each of which is preferably less than semi-circular to allow the hubs to be clamped in circumferential engagement on shafts of various diameters within a predetermined range of diameters. A chain is connected to the drive sprocket for transmitting the monitored rotary motion of the shaft to the driven sprocket of the encoder.

Abstract: A split sprocket assembly, related apparatus, and a method of mounting a sprocket to a rotatable structure, such as a drive or idler drum, are disclosed. In one embodiment, the sprocket assembly is comprised of at least three sections or segments, each of which is secured to the adjacent section or segment by a fastener, such as a tangentially-extending bolt and nut combination. The sprocket assembly includes a plurality of receivers, each for receiving a key that corresponds to a keyway formed in the rotatable structure. In one embodiment, at least one of the keyways is truncated and, thus, extends only partially across the rotatable structure in the axial direction. A key substantially identical to the truncated keyway in length and width is placed therein, such that the sprocket is prevented from traveling or “walking” along the rotatable structure.

Abstract: A split sprocket assembly. The sprocket assembly does not require additional separate fasteners and extends substantially parallel to the axis of the drive shaft. Further, the sprocket assembly includes first and second sprocket sections having integrally formed connecting device to connect the sprocket members about the shaft. The connecting device preferably includes a projection formed on one sprocket section and a complementary recess formed on the other sprocket section. The geometry of the projection and the recess is preferably that of a dove-tail shape. The connecting device further includes a device for preventing axial movement of the sprocket sections relative to one another. In one embodiment, the sprocket assembly does not require any additional separate fasteners at all, and the preventing device includes locking members to provide a cylindrical snap fit.

Abstract: A split sprocket is formed in two opposing half sprocket parts of essentially identical conformation and structure. The halves, when married, form a typical sprocket which may also be a gear or drive pulley. A ring is adapted to engage a circular groove on each side of the sprocket so as to assure the two halves cannot part. A pair of screws also engages the two halves so as to firmly join them. One of the rings may have a cylindrical extension which when fitted into the sprocket adapts the sprocket for being mounted onto a smaller shaft. Each half of the sprocket may be fitted with a tongue and a tongue groove for aligning and maintaining alignment of the two halves.

Abstract: A chain drum arrangement for a central or double central scraper chain conveyor which includes a divided chain wheel and shell-type chain wheel segments which are attached and locked in rotation to or detachably from the shaft. The chain wheel is secured in its installed position on the shaft by ring parts disposed on both sides of the chain wheel, and at least one of these ring parts has a divided locking ring which can be taken off radially from the shaft in order to take off the divided chain wheel from the shaft.

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 split hub assembly including a split sprocket, a split hub, and members to connect the split sprocket together. The formed split sprocket is disposed over the split hub by complementarily tapered surfaces to maintain the split hub coupled together. Installation and removal of the present invention is significantly easier than standard prior art devices, plus it provides interchangeability of hubs and sprockets.

Abstract: The invention relates to a divisible sprocket wheel manufactured from synthetic material and having a gear ring (1b) and a hub portion (1a), comprising two wheel halves (1) which are manufactured by means of injection molding and have their axial faces (1f) abutting against each other, and means (3, 4) for enabling fixing the wheel halves together, wherein each wheel half (1) is solid and consists of a first synthetic material forming at least one half of the hub portion of the sprocket wheel; a second synthetic material forming at least one half of the gear ring of the sprocket wheel and the two radial outer faces (1d, 1e) of the wheel half, and a third synthetic material forming the internal portion (1e) of the body of the wheel half.

Abstract: A split sprocket assembly mountable on a shaft comprises a pair of substantially semi-circular sprocket halves, each of the sprocket halves having a mating face joined at a split line between the sprocket halves and having a concentric bore. Each of the sprocket halves further has a plurality of teeth provided about its periphery and a series of tooth pockets also formed about its periphery between each pair of adjacent teeth. A hub having a throughhole disposed around the shaft is disposed in the concentric bore. The sprocket halves and the hub include two sets of diametrically opposite, aligned apertures, each of the aligned apertures extending radially inwardly from one of the tooth pockets on the periphery of the sprocket halves and into the hub. A fastener is provided within each of the aligned apertures for joining the sprocket halves and the hub together to form a split sprocket assembly readily attachable and detachable from said shaft.

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 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: Sprocket wheels for use in chain conveyors, for instance, are preferably of a divisible construction so as to enable each wheel to be removed from the shaft separately. Also, on the basis of considerations of hygiene, the outer side surface of such a wheel is preferably entirely flat when used in the food or beverage industry. Existing divisible wheels are either flat on the outside, but expensive, or not flat and cheap because they are made by injection molding. The synthetic sprocket wheel according to the invention is flat and cheap and comprises two wheel halves with axial planes abutting against each other, each wheel half consisting of two interconnected parts, made by injection molding, abutting against each other through a radial side face, with the cavities and ribs necessarily present for the injection molding process being located in the interior of the wheel half.

Abstract: Sprocket wheels for modular plastic link belts are made in two mating halves for expediting removal perpendicularly away from a coaxial drive shaft about which they are supported without disassembly of the shaft. To assure axial alignment and stability of the mating parts overlap joints between the parts are formed by securing together in surface contact laminar flange extensions from respective sprocket wheel halves joined in driving relationship about an inner shaft to form a completed sprocket wheel assembly. For critical use in food and chemical environments, the entire sprocket assembly is made of plastic, including binding clamps for holding the two mated flange surfaces of different halves together.

Abstract: A clamp on combination chain and rope hauler wheel formed from two semi-circles half wheels having an outer periphery adaptable for gripping the links of a chain and a rope which are removably clamp together and gripping clamp around a drum. The gripping connection to the drum is adjustable to grip a range of different drum diameters of a drum winch.

Abstract: A two piece power transmission component manufactured in segments, each segment having a central opening for assembly around a shaft, a pair of fastener flanges and mating sockets, each having a fastener flange and a mating locking ridge to facilitate assembly and mating holes formed axially with the central opening for convenient operation of a fastener such as a bolt and a mating nut, each socket and fastener flange has multiple, engaging thrust surfaces to enable the assembly to withstand large forces and the bolt head and nut, when assembled, are in recessed portions of the segments such that they do not extend past the outer surfaces of the assembled segments.

Abstract: A conveyor roll adapted for mounting on a shaft comprises a pair of opposed roll halves of a resilient material of semi-cylindrical shape, each having a semi-cylindrical recess. A pair of opposed semi-cylindrical metal insert halves are nested and secured within each roll half and have assembly ends projecting axially outward of the roll halves. Each insert half has an elongated semi-cylindrical recess snugly receiving said shaft. Fasteners interconnect the assembly ends of the inserts securing the inserts together upon the shaft and securing the roll halves together.

Abstract: A sprocket drum assembly is constituted by two complementary, radially-separable sprocket drum assembly parts. The assembly comprises a hollow, cylindrical drum and a sprocket wheel having an odd number of sprocket teeth. The two assembly parts meet along two surfaces. The inner edges of at least those portions of said surfaces associated with the drum lie in a diametrical plane of the assembly. Each of the outer edges of those portions of said surfaces associated with the sprocket wheel lie between a respective pair of sprocket teeth.