Abstract: A drive roller for flat belts is provided in various embodiments wherein the roller has improved characteristics for maintaining traction of belts, such as lagging applied to the roller.

Abstract: A belt transporter roller for an image forming apparatus according to the present invention has a rotating shaft of an elastic roller; and an elastic fin wound around the rotating shaft and provided along an axial direction thereof, the fin including at least two spiral groups different in winding direction.

Abstract: To reduce the generation of noise in a belt drive for auxiliary units in an internal combustion engine, a guide roller for the belt has an approximately cylindrical surface formed with a bead which extends along the surface in a direction oblique to the side surfaces of the guide roller. The resulting variation in the location of the bead with respect to a drive belt engaging the guide roller surface causes the unsupported vibratable length of the belt to vary according to the location of the contact point of the belt with the bead, which varies as the roller rotates. This produces a variation in the natural frequencies of tensile strands in the drive belt, which reduce the sympathetic vibrations of the belt and hence the propagation of noise through the guide roller.

Abstract: An idler roller 40 replaces idler sprockets in roller chain 20 applications to reduce wear on the system components. The roller chain side bars 24, 26 rest in parallel alignment grooves 50, 52 in the non-resilient idler 40. In a second form, the outer circumference is still rigid, but includes a resilient dampening layer thereunder.

Abstract: A apparatus in which lateral movement of a moving belt is controlled so that the belt moves in a predetermined path. The apparatus includes dual oppositely wound, helical springs having a rectangular cross-section with a high friction material extruded thereon. The springs are mounted on a shaft with an adhesive.

Abstract: A flat belt transmission has two spaced flat pulleys and a flat belt reeved around the flat pulleys. Each pulley can have a plurality of crowns arranged in the width direction of the outer periphery thereof. The flat belt can be a plurality of belts with a narrow width, one for each of the crowns. The flat belt can be a single belt with a part extending in the longitudinal direction of the belt in its inner periphery. The flat belt can be used with the flat pulley of the above construction or a flat pulley having a single crown of its outer periphery. In addition, the plurality of crowns are formed on the outer periphery of the flat pulley so as to be spaced at the same distance from the center of rotation of the pulley, or the outer periphery of the flat pulley can be in the form of a circular arc to change height of the crowns.

Abstract: The objects of the invention are a V-belt pulley and drive and it relates to V-belt transmissions, where the belt is a die-cut type without changes in the construction in the lateral direction. The aim is to improve efficiency and safety of function, in particular in slow-running drives working in dirty environment. The method used is to make arched round bottomed grooves on the contact surfaces of the pulleys. By optimizing of the spiral forms and their inclination angles it has been tried to control the wedging of the belt between contact cones of the pulleys and besides to reduce the radial sliding of the belt. It can also be useful to make two groovings crossing each other onto the contact surfaces to assist them in getting and staying clean.

Abstract: In guide rollers (2) for band saws, especially for sawing meat and bones, the contact surface (4) is very quickly fouled or soiled by greasy fat, bone meal, etc., which has a disadvantageous effect on the power transmission and the guidance of the band saw blade (3). The contact surface (4) of the guide roller rim which guides the band saw blade, is provided with open passages (7) reaching to the side surfaces (5) of the guide roller rim. Fat and other contaminating material is pressed by the band saw blade into the passages and is flung away from the rotating guide roller (2), whereby a reliable operation of the band saw is assured.

Abstract: An improved pulley system for use with band printers or the like. A steel printing band is looped around a pair of capstans covered by sleeves made of elastomeric material. The sleeves include a plurality of downwardly angled flexible circumferential flanges and a lower horizontal rim. The band contacts the flanges and as the capstans rotate, inward force on the band is transferred to a downward force by means of the flanges. The downward force causes the band to move into contact with the lower horizontal rim, thereby vertically aligning the band in the printer. In an alternate embodiment, a plurality of non-flexible circumferential ridges are included. The central ridges extend farther out from the surface of the sleeve and serve to define a crown. The sleeve configuration serves to reduce wear and accurately align the printing band within the printer assembly.