Abstract: A hybrid tube construction for use in, e.g., industrial or hydraulic hoses is described, the hybrid tube generally including coextruded interior tube and outer tube layers. The interior tube layer of the hybrid tube is a functional layer having chemical resistance to the fluid to be conveyed within the hybrid tube, while the outer tube layer is a modulus layer providing the hybrid tube with strength and flexibility. The hybrid tube may optionally include a reinforcement layer and/or cover layer. Manufacture of the hybrid tube generally uses simultaneous coextrusion of the interior tube layer material and the outer tube layer material to thereby form the hybrid tube construction. In some embodiments, the hybrid tube formed by coextrusion has sufficient structural integrity that supporting mandrels and/or post-extrusion curing steps are not required.

Abstract: A sprocket system including a sprocket assembled from multiple disc sprockets coaxially aligned and secured together to provide a desired axial width for the sprocket is described. In some embodiments, the sprocket described herein is a hub-less sprocket.

Abstract: Belt systems, such as toothed systems, having a belt and a wheel (e.g., a pulley, gear, sprocket, etc.) that have the fit of the wheel optimized for the fit of the belt, and vice versa. The systems utilize combined techniques and materials to create a belt and wheel interface that improves and even maximizes performance by increasing the efficient transfer of power between belt and wheel, and by distributing the forces across multiple teeth of the wheel. A coating on the wheel can be used to modify the pitch of the wheel.

Abstract: A cover fabric for power transmission belts having two or more alternating stripes or bands of different frictional properties. The stripes may be different fabric constructions. The fabric may be woven or knit with stripes of different area or yarn densities, different permeabilities, or different openness. The fabric may cover a surface of a V-ribbed-belt, V-belt, toothed belt, flat belt, round belt or other drive belt, resulting in stripes having different amounts of rubber strike through or different coefficients of friction. The stripes may be different rubber compositions or flocking or other materials.

Abstract: A center cord-line V-belt with a radially centered cord line of helically wound tensile cord embedded in a very high-modulus adhesion gum, an overcord layer, and an undercord layer. The adhesion gum has a substantially isotropic modulus, while the overcord and undercord layers have anisotropy in with-grain and cross-grain moduli. The overcord and undercord cross-grain moduli are less than the adhesion gum modulus. The anisotropic moduli are the result of oriented short fibers and the with-grain modulus is oriented axially in the belt. The adhesion gum preferably has no short fiber. The belt preferably has no reinforcing fabric layer and no fabric wrap. The adhesion gum, overcord layer and undercord layer are preferably based on an ethylene-alpha-olefin elastomer, with peroxide cure, reinforcing filler, and metal salt of an ?-?-unsaturated organic acid. The belt may have notches on one or both of the inner and outer radial surfaces for additional flexibility.

Abstract: A clamp for open ended flat belts. The clamp has a tapered housing with an aperture at a first end providing access to the housing interior and a second open end also providing access to the interior. A tapered wedge is removable and replaceable from the interior of the housing, the wedge having a first end and a radiused second end and having a surface comprising alternating ribs and lands. The clamp includes a lock having a concave surface similar to the radiused second end of the tapered wedge. The housing may have a removeable and replaceable side wall providing access to the interior.

Abstract: A power unit for a pedal vehicle includes a pedal shaft, an output shaft arranged to transfer torque to a vehicle wheel, a main epicyclic gear set arranged to control transmission ratio between the pedal shaft and the output shaft, an assist motor connected to an assist gear of the main epicyclic gear set, and a control motor connected to a control gear of the main epicyclic gear set. The control motor and the control gear form a control assembly of the power unit. The power unit includes a one-way clutch provided to the control assembly of the power unit and arranged to transmit rotation in only a first rotation direction.

Abstract: A tensioner comprising a base defining a hole, the hole having a center C, the hole having a diameter sufficient to receive a driven pulley, a rotary arm engaged with the base by a retaining member connected to the base, the rotary arm rotatable about the center C, a pivot arm mounted to the rotary arm on a pivot, the pivot offset from center C, a first pulley journalled to the rotary arm, a second pulley journalled to the pivot arm, a torsion spring engaged between the rotary arm and the pivot arm for biasing the second pulley toward the first pulley, a damping member frictionally engaged between the base and the rotary arm, and the rotary arm defining a portion for receiving a first pulley fastener whereby a first pulley position is adjustable.

Abstract: This disclosure relates generally to couplings used in mining and other applications. An extraction device for removing an adapter from a port formed in a structure is provided. The extraction device may include an end wall and a side wall. The end wall may define an external face of the extraction device. The side wall may extend axially away from a periphery of the end wall. The side wall may terminate at an end face of the extraction device. The end face may have a larger dimension than the port so as to abut the structure adjacent to a periphery of the port. The side wall may include an inner surface and an outer surface. The inner surface may have a threaded portion.

Abstract: A self-piercing connector comprising, a first body, a second body, the first body comprising a first cutting member for piercing a fluid conduit insulating layer to engage a fluid conduit first conductor, the second body comprising a second cutting member for piercing the fluid conduit insulating layer to engage a fluid conduit second conductor, the first cutting member having a semi-circular form and comprising portions that extend tangentially from each end of the first cutting member, the second cutting member having a semi-circular form and comprising portions that extend tangentially from each end of the second cutting member, the first cutting member and the second cutting member electrically isolated from each other, the first body comprising a first connection member for engaging a cooperating second connection member on the second body, a first body receiver for receiving an electrical conductor connectable to the first cutting member, and a second body receiver for receiving an electrical conductor

Abstract: An isolating decoupler comprising a hub for connection to a shaft, a pulley journalled to the hub, the pulley having a belt engaging surface, a composite spring having a clutch portion, a transition portion and a variable diameter portion, the composite spring engaged between the hub and the pulley, the clutch portion diameter reducible in a loading direction for a frictional engagement with the pulley in the loading direction, the frictional engagement of the clutch portion progressively releasable from the pulley in an unloading direction, the variable diameter portion having a diameter which varies according to a torque load; and an inertial member engaged with the hub through a damping member.

Abstract: A transportable test system having a control room module, a first IMR test module, and a second IMR test module. The test modules may have fasteners that permit assembly into a unitary package of predetermined overall dimension (i.e. size and shape) such as a standard shipping container dimension. A first IMR test module may have a clean fluid provider and/or supply reservoir, and a second IMR test module may have a used fluid collector and/or collection reservoir. The system may include pressurization, hose restraint, fluid containment, module stabilization/mobilization, lifting, cleaning, and control subsystems.

Abstract: A tensioner comprising a first pivot arm having a first pulley journalled thereto, a second pivot arm having a second pulley journalled thereto, a frustoconical base having a base vertex, a frustoconical pivot shaft having a pivot shaft vertex, the base vertex is oriented opposite the pivot shaft vertex on a common axis, the first pivot arm disposed for pivoting movement about the frustoconical pivot shaft, the second pivot arm disposed for pivoting movement about the frustoconical base, a first bushing damping movement of the first pivot arm on the frustoconical pivot shaft, a second bushing damping movement of the second pivot arm on the frustoconical base, and a spring in compression urging engagement of the first pivot arm with the frustoconical pivot shaft and the second pivot arm with the frustoconical base.

Abstract: An isolating decoupler comprising a shaft, a pulley having a belt bearing portion, a one way clutch, a torsion spring, the torsion spring engaged between the pulley and the one-way clutch, and a single bearing disposed between the shaft and the pulley, the bearing comprising a radial centerline, the radial centerline aligned with a mid-line of the belt bearing portion.

Abstract: The present disclosure is directed to systems and methods which provide a seal-less high temperature and pressure valve for use in many applications.

Abstract: A composite article having an elastomeric composition with a blowing agent having an activation temperature and providing at least one structural member defining a fixed gap. The composition is formed below the blowing agent's activation temperature into a solid elastomeric member approximately the thickness of or larger than the gap. The elastomeric member is assembled into the gap, which may place the elastomeric member in a state of compression in the gap. The elastomeric member is then expanded by heating it above the activation temperature. During expansion, the escape of the gas produced is limited to increase the state of compression of the elastomer in the gap by means of confining any free surfaces or by including a platy filler such as nanoclay in the composition.

Abstract: A tensioner comprising a base, a shaft connected to the base, an eccentric adjuster coaxially engaged with the shaft, an arm pivotally engaged with the shaft, a pulley journalled to the arm, a torsion spring engaged between the arm and the base, the arm comprising a first receiving portion and a second receiving portion disposed axially opposite from the first receiving portion, a first damping member disposed between the arm and the base, the first damping member frictionally engaged with the base and engaged with first receiving portion, a second damping member disposed between the arm and the eccentric adjuster having a member engaged with the second receiving portion, and a biasing member disposed between the first damping member and the arm for applying a normal force to the first damping member and to the second damping member.

Abstract: A tensioner comprising a shaft, a base, a pivot arm pivotally engaged with the base, a pulley journalled to the pivot arm, a first spring urging a first damping member into a frictional engagement with the pivot arm, the first spring engaged with the base, the first damping member imparting a damping force greater in a first pivot arm direction than in a second pivot arm direction, and a second spring disposed in the pivot arm and urging a second damping member into a frictional engagement with a base surface, the base surface comprises an arcuate form having a radius that is variable from a minimum value to a maximum value.

Abstract: An adjustable flyweight pivot shaft assembly for a CVT comprising a pivot shaft, a flyweight engaged with a pivot shaft surface, an eccentric collar having a bore with an eccentric center axis, the pivot shaft engaged with the eccentric collar bore, the eccentric collar having an indexing portion, the indexing portion engagable with the receiving portion on the CVT body, the indexing portion engaging the receiving portion to lock the eccentric collar and thereby pivot shaft in a desired position with respect to the axis of rotation of the CVT.

Abstract: A flexible hose or a tubing having a barrier layer of polyamide 6 having an impact modifier, and/or branched molecular structure, a flexural modulus of 1 to 2 GPa and/or a tensile elongation of 100% or more. The hose may have additional layers such as an HNBR rubber inner tube, an EVM/CPE rubber blend outer cover, a textile or wire reinforcement, or the like. Permeability to ethanol- and methanol-containing fuels is very low. Permeability to B20 biofuels is very low.