Abstract: By improving the rigidity of a pulley while suppressing a weight of the pulley from increasing, excessive noises due to resonance can be reduced. A washing machine 1 includes a drum 9 rotatably disposed in the water tub 5. The washing machine 1 has a motor to rotationally drive a pulley 20, which is fixed to the drum 9, via an endless belt 13. The pulley 20 has a plurality of arms 23 radially extend from the boss 22 to support an outer wheel 21. The arm 23 has a variable cross-sectional portion 24 in which a section modulus against bending in an axial direction gradually decreases from the boss 22 to the outer wheel 21.

Abstract: The present utility model provides a traction sheave, including: a traction sheave body, formed of several arc-shaped traction sheave sections that are connected to each other; and connecting portions, disposed at two ends of each traction sheave section along a lateral surface of the traction sheave section, where the connecting portions at the two ends of each traction sheave section fit each other. The traction sheave according to the present utility model has relatively high replaceability, is very convenient to assemble and disassemble, requires relatively low costs of human and material resources and time, and meanwhile can still ensure high reliability of working of the traction sheave.

Abstract: Torsional vibration dampers (TVDs) having a plurality of spokes designed to withstand both torsional and bending forces and vibrations are disclosed. The spokes, which connect a central member to a peripheral rim, include a first end coupled to an outer radial surface of the central member; a second end coupled to an inner radial surface of the rim; and four concave surfaces extending between the first end and the second end. The concave surfaces may be concave from the first end to the second end and may also be concave laterally from front to back or side to side. A TVD having a hub with spokes having one or more concave surfaces is also disclosed herein. A method of designing the spokes for the hub is also disclosed.

Abstract: Low-noise pulleys and methods of constructing low-noise pulleys are disclosed. In a first aspect, first and second pluralities of arms extending radially outward from the outer hub to the outer rim are angularly offset from each other about the axis of rotation to eliminate symmetry across the lateral midline of the pulley. In a second aspect, the radially outermost ends of a plurality of arms are arcuately spaced apart according to a pitch sequence describing a pseudo-random pattern of relative spacings so as to reduce or eliminate rotational symmetry of the pulley. In a third aspect, features of the first and second aspects are combined, and in one embodiment, first and second pluralities of arms are, respectively, approximately oppositely canted so as to vary the arcuate spacings of the laterally outermost ends of the arms.

Abstract: Low-noise pulleys and methods of constructing low-noise pulleys are disclosed. In a first aspect, first and second pluralities of arms extending radially outward from the outer hub to the outer rim are angularly offset from each other about the axis of rotation to eliminate symmetry across the lateral midline of the pulley. In a second aspect, the radially outermost ends of a plurality of arms are arcuately spaced apart according to a pitch sequence describing a pseudo-random pattern of relative spacings so as to reduce or eliminate rotational symmetry of the pulley. In a third aspect, features of the first and second aspects are combined, and in one embodiment, first and second pluralities of arms are, respectively, approximately oppositely canted so as to vary the arcuate spacings of the laterally outermost ends of the arms.

Abstract: A resin pulley includes an outer cylindrical portion including an outer circumferential surface on which a belt is to be wound, an inner cylindrical portion, and a plurality of ribs connecting an inner circumferential surface of the outer cylindrical portion and an outer circumferential surface of the inner cylindrical portion, which are formed of a resin material. The ribs are provided so as to be inclined towards a circumferential direction relative to a radial imaginary line as viewed in an axial direction. Radially outer end portions of the ribs are formed such that inclination angles of the respective radially outer end portions relative to the radial imaginary line increase as the ribs extend radially outward, and radially inner end portions of the ribs are formed such that inclination angles of the respective radially inner end portions relative to the radial imaginary line increase as the ribs extend radially inward.

Abstract: A resin pulley includes: an outer cylindrical portion having an outer circumferential surface on which a belt is to be wound; an inner cylindrical portion which is disposed radially inwards of and concentrically with the outer cylindrical portion; and a plurality of ribs connecting an inner circumferential surface of the outer cylindrical portion and an outer circumferential surface of the inner cylindrical portion. The outer cylindrical portion, the inner cylindrical portion and the ribs are formed integrally from a resin material, and the ribs are provided in such a manner as to be inclined towards a circumferential direction relative to a radial imaginary line as viewed in an axial direction.

Abstract: An idler pulley is described for a front end accessory drive. The idler pulley includes plurality of angled spokes, such as angled ribs molded into the pulley to join an outer hub and an outermost belt interacting region. As the belt runs over the surface of the pulley, any defects on the belt running surface of the pulley due to shrinkage and fill are now angled, and angling of the defects reduces direct impact with the belt and therefore reduces the structureborne noise produced by operation of the belt and the pulley.

Abstract: A bull-wheel for a rope transport installation comprises a hub and a peripheral rim joined to the hub by a metal connecting framework composed of a perforated central disk strengthened by rigidifying arms. The rim is radially subdivided into several circular segments assembled to one another by first fixing members. The hub is fixedly secured to a support enclosure comprising at least one coaxial plate of polygonal cross-section confining at the ends bearing surfaces for the central disk and the radial rigidifying arms assembled by second fixing members. The assembly is arranged so as to distribute the radial forces in the axis of the rope uniformly regardless of the angular position of the bull-wheel when the latter is driven in rotation.

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: In a spoked drive wheel for a hydrodynamic torque converter operating with power splitting, having a spoke for connecting a wheel hub to an external ring of the spoked drive wheel, the spoke cross-section is designed in the shape of a wing profile extending along a profile main axis. The profile main axis is transverse to the axis of rotation of the wheel. In this way, the deterioration in the characteristics of the torque converter is kept as small as possible in both power splitting operation and in operation without power splitting.

Abstract: The pulley comprises an annular portion which extends radially beyond a grooved ring around which a belt for driving the recorder extends. In order to permit fixing this pulley to a wheel hub flange of variable diameter by means of nose portions, each nose portion is formed at the end of an arm whose other end is pivotally mounted on the ring and can be retained in any of a plurality of angular positions which are defined by steps provided on the edges of slots in which studs formed on each of the arms are guided.

Abstract: The pulley of moulded plastics material is mounted adjacent to the outer side of the bicycle wheel flange, concentrically with this flange. The pulley comprises a grooved ring around which extends a belt for driving a distance recorder. From the periphery of the ring, on the side of the latter adjacent to the wheel flange, extend in generally radial directions are three arms which are angularly spaced 120.degree. apart. Mounted on the free end portion of the arms by means of a pivot pin are the end portions of tabs which are provided with a mounting device at the opposite end. This mounting device is adapted to engage with a wheel spoke so as to maintain the pulley in a centered position relative to the wheel flange.

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 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: 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: Used and/or scrap pneumatic tires may be used for making wheels and pulleys for low speed, low load and low cost applications, the bead of the tires being utilized as the means mounting the tire, the bead being deformed to a generally polygonal shape. When plates are substituted for spokes on the wheels, low cost tumblers are produced.