Abstract: A chain joint for a power transmission chain comprises a joint pin and a projecting bush having brims swelling outwardly both its ends with at least one a slit extending longitudinally through the bush. The projecting bush is inserted into a pin hole and a bush hole of the chain, and the joint pin is pressed in an inner hole of the projecting bush. Then, the projecting bush is spread outwardly due to the slit and fits in the pin hole perfectly. Furthermore, the brims engage with the outer link plates on their outsides to prevent the projecting bush from coming off.

Abstract: A chain equipped with rollers and including roller joint sealing arrangements each comprising the provision of complementary sets of annular grooves in the end faces of a roller and in the inwardly facing surfaces of the sidebars of the roller chain. An annular seal member is loosely seated in each complementary set of grooves to form a labyrinth type seal to prevent lubricant efflux from the roller joint and contaminant influx into the roller joint to improve the wear characteristics of the roller joint.

Abstract: A roller chain is provided with sets of links constructed of unequal pitch n order to alter the pattern of contacts between the chain and the sprocket and the resulting noise spectrum. The varying pitch lengths through the chain are achieved by varying the length of the inside links or the lengths of the outside links. Alternatively, the sizes and configurations of the rollers or bushings are varied. Configurations can include circular rollers, elliptical rollers or triangular rollers. The pattern of variation of the pitch of the links is randomized throughout the chain.

Abstract: A roller chain for bicycles comprises a plurality of outer links each having a pair of outer plates each having two pin holes, two pins extending through the pin holes and connecting the outer plates of each of the outer links with one another, a plurality of inner links arranged alternately with the outer links and each having a pair of inner plates each provided with a bearing collar defining an inner hole and carrying a roller. The inner holes have a cross-section which is elongated in a longitudinal direction. At least one of the pin holes in the outer plates and the inner holes in the bearing collars are offset so that a roller pitch of the inner and outer links in a stretched state of the chain is adjusted substantially to the same value.

Abstract: A chain 32 and sprocket 10 combination which reduces chordal action and wear allowing for higher output and greater durability of the devices that use chains and sprockets. The chain 32 has hinged joints equipped with a torsional spring 42 that resist hinging and thus reduces chordal action. The sprocket 10 has cam manipulated teeth 12 that prevent both sprocket tooth and chain wear.

Abstract: An improved chain comprising inner link plates, sintered oil-retaining bushings secured to the inner link plates, outer link plates, connecting pins secured to the outer link plates and the pins being rotatable within the bushings, the improvement comprising: the sintering density of the bushings being in the range of approximately 6.0 g/cm.sup.3 to 7.1 g/cm.sup.3 ; and, a roller rotatably supported on each bushing.

Abstract: A chain has pairs of inner sheets and pairs of outer sheets. Each sheet has two rings. An annular flange is formed on each ring. An inner surface of an opposite end to a free edge of each annular flange is rounded so as to form a recess. Each annular flange of the outer sheet is received in the recess of one inner sheet. A pin is inserted through the annular flanges of a pair of inner sheets and a pair of outer sheets. Both ends of the pin are deformed so as to be received in the recesses of the outer sheets.

Abstract: A roller chain in which the pins are provided with at least one longitudinal groove oriented toward the bushing seams to improve the lubrication of the pin-bushing interface.

Abstract: The invention relates to a roller chain for chain drives, which has a plurality of inner and outer links alternating in tandem. The inner links have at least two inner plates having pairs of pin holes and having pin bearings disposed between the pin holes. The outer links contain each at least two outer plates which are joined together by at least two pins fastened in them. For the articulation of the outer links with two adjacent inner links each, the one pin of each outer link reaches through one of the pairs of pinholes and the associated pin bearing of one of the adjacent inner links, and the other pin of each outer link reaches through one of the pairs of pin holes and the associated pin bearing of the other of the adjacent inner links. The pin bearings are encompassed by rollers disposed for loose rotation between the inner plates.

Abstract: This invention makes it possible to produce a chain having a particularly small overall width, while able to operate with sprockets having a customary tooth thickness. This result is obtained in particular by providing for the inner plates (10) to be deformed, in their end zones (12), on both faces and to delimit projecting portions (16c) directed towards the interior of the chain, these projecting portions thus being separated by a distance (d.sub.1) smaller than the thickness of the teeth of the sprockets with which the chain is to cooperate.

Abstract: Bicycle Chain is made of alternating bushing links and pin links. The bushing links have parallel bushings held in interference fit in bushing plates and extended axially beyond the bushing plates, solid metal rolls with a lubricating plating are held loosely on the bushings, and loosely between the bushing plates. The bushings extend axially outward beyond the bushing plates for substantial distances. Pins extend through the bushings and are fixed in pin plates to form pin links which alternate with the bushing links. The pin plates are held outward from the bushing plates for a substantial amount by the axial bushing extensions to prevent dirt build up. The pin plates, bushing plates and bushings are plated with an anti-corrosion plating. The pins and rolls are plated with a porous metal plating with solid polymeric lubricant held within pores of the plating for lubricating the pin-bushing interior interface and for lubricating the roll-bushing and roll-bushing plate interfaces.

Abstract: Chain having increased life is constructed similar to conventional power transmission and conveyor chain with the exception that the increased-life chain has enlarged bushing receiving openings in link plates.

Abstract: Bicycle chain is made of alternating bushing links and pin links. The bushing links have parallel bushings held in interference fit in bushing plates and extended axially beyond the bushing plates, solid metal rolls with a lubricating plating are held loosely on the bushings, and loosely between the bushing plates. The bushings extend axially outward beyond the bushing plates for substantial distances. Pins extend through the bushings and are fixed in pin plates to form pin links which alternate with the bushing links. The pin plates are held outward from the bushing plates for a substantial amount by the axial bushing extensions to prevent dirt build up. The pin plates, bushing plates and bushings are plated with an anti-corrosion plating. The pins and rolls are plated with a porous metal plating with solid polymeric lubricant held within pores of the plating for lubricating the pin-bushing interior interface and for lubricating the roll-bushing and roll-bushing plate interfaces.

Abstract: An endless power transmission chain includes link assemblies made up of spaced apart cylindrical pins connected at their opposite ends to parallel outer link plates. Spaced apart inner link plates interconnect the link assemblies and are provided with self-lubricating bearings for journalling the interconnected pins to provide a flexible chain assembly. Chain rollers or bushings of polyurethane or similar resilient non-metal material are rotatably mounted on the link pins between the inner link plates and are directly engageable with the chain sprocket teeth for deflection to provide distribution of chain load over a greater surface area of the sprocket teeth as well as between adjacent teeth engaged with the chain. The chain includes centrally mounted bracket members secured to the link pins for connecting the chain to a series of spaced apart foils or blades for a fluid dynamic power generating apparatus using a translating foil or blade system.

Abstract: A roller chain adapted to be placed in compression between two members one of which is movable and the other fixed and to bear high pressure arising between these members, comprises a plurality of rollers on each of a series of transverse axles, the axles being interconnected by links of a height less than the external diameter of the rollers. Sleeves are threaded on the axles and the rollers turn on these sleeves. The roller chain is confined between guide surfaces provided on at least one of the relatively moving members between which it is disposed, this member also having removable members thereon that define these guide surfaces, the guide surfaces contacting the outermost links.

Abstract: A power transmission roller chain link construction comprises a first link pin plate with a pair of spaced apart substantially parallel link pins secured to said plate in a press-fit so that they extend parallel to the plate. A bushing is fitted over each pin and a roller link plate is press-fitted on the bushing adjacent each of its ends. A roller is rotatably mounted on each bushing between the roller link plates. The link pins, link pin portion and a rod portion extending outwardly from each link pin portion beyond the second link plate, the second link plate being press-fitted to the link pin adjacent their opposite ends from the first link plate. The rod portion of each link pin has a threaded area adjacent the second link plate and a nut is threadably engageable on the threaded area. The link is manufactured by first press-fitting the link pins to the first pin link plate thereafter assembling the bushing with the roller link plates at each end over the pin and assembling a bushing between the plates.

Abstract: A link set capable of connection in series to form an endless silent chain has a pair of guide links held apart by, and non-rotatively fastened to the ends of a pair of pins. A central link pack devoid of bushings to maximize the amount of material available to resist the stresses encountered under load is connected between and directly engages the pins. A pair of articulating link packs are rotatively connected to one of the pins on either side of the central link pack. Bushings are provided in the articulating packs to improve the wear life of the chain.

Abstract: A chain link assembly comprising a pair of inner sidebar portions, each of the inner sidebar portions defining an aperture. A tubular-shaped bushing is secured to the pair of inner sidebar portions. The bushing includes a central portion and integral bushing extensions at each end of the central portion. The central portion of the bushing extends between the inner sidebar portions and into the apertures, and the bushing extensions project beyond the inner sidebar portions. The inside diameter of the bushing at any point along the bushing extensions is larger than the smallest inside diameter of the central portion.

Abstract: A chain strap wrapping and guide assembly including a plurality of crown-shaped rollers that are guided by V-shaped guides. The chain is driven by a motor operated sprocket.

Abstract: A roller chain comprising outer link plates, inner link plates, pins, bushes, and rollers, the bushes each including an elastic member so that a total axial length of the bush including the elastic member controls an interval between opposite inner link plates, the elastic member being elastically deformed to change the interval, the outer surfaces of the inner link plates being kept in close proximity to the inner surfaces of the outer link plates to avoid above entry of dirt or sand therebetween.

Abstract: A roller chain, having an elastic annular member being fitted adjacent each end of a pin and between a pin link plate and a roller link plate for sealing lubricating oil present in the space between the pin and the bushing, comprises a bushing extended on each end thereof so as to form an extended portion projecting outwards from the roller link plate by a length slightly smaller than the thickness of said annular member, said extended portion being provided with a tapered face on the outer periphery thereof, and said annular member being fitted on said outer periphery so as to be in contact with said tapered face and maintained in lightly pressurized contact with the pin link plate and the roller link plate.

Abstract: A multiple strand drive chain for transmitting power from toothed sprockets to an endless belt constructed of toothed links. The strand which cooperates with the toothed links has a plurality of spaced rollers, with alternate rollers, which have a first predetermined diameter, being constructed of a deformable, resilient material. The intervening rollers, which have a smaller diameter than the first predetermined diameter, are constructed of a substantially non-deformable, rigid material. The deformable rollers normally share the driving load in a substantially uniform manner, but as the chain wears the sharing becomes disproportionate. The non-deformable rollers greatly extend chain life by limiting the maximum driving load placed on any one deformable roller.

Abstract: A roller chain that includes a series of alternately arranged inner and outer link units has side links made of wire. The wire side links of the inner unit are welded to the end portions of roller-carrying bushings, and the side links of the outer units are welded to the end portions of pins which extend through the various bushings. An embodiment is disclosed in which the wire links of the outer link units are welded to short sleeves that are pressed onto the pins. Also, a form of the invention involves an arrangement wherein the wire side links of both the inner and outer units are welded to pins and the pins roll on each other to provide the necessary pivoting action of the chain.

Abstract: A sprocket chain having alternating inner links and outer links is formed with the length of each inner link slightly longer than the tooth pitch of a cooperating sprocket and the length of each outer link slightly shorter than the tooth pitch by the same amount. The chain may comprise a roller chain having a roller mounted to turn on each bushing, or may comprise a bush chain having no rollers and in which the bushings make direct contact with the sprocket teeth.

Abstract: The chain comprises alternately pivotally interconnected outer links and inner links. The outer links are formed by outer plates which are interconnected by spacer members and the inner links are formed by inner plates which are trapped between the outer plates and are rigid with tubular members through which the spacer members extend. Each inner plate comprises two planar portions of rounded or part-circular shape which are interconnected by a center portion. At least a part of the center portion is deformed relative to the general plane of the plate. The inner plates of a given link have their deformed part offset and facing outwardly of the link so as to constitute an entrance or lead-in for sprocket teeth. In this way, the engagement of the chain on the sprocket is facilitated, in particular when changing gear by means of a derailleur acting on the chain.