Patent ID: 9248972
Filing Date: 2016-02-02
CPC Classification: A01J,B65G

Claim Text:
1. A belt run control device comprising: A pair of cylindrical rollers comprising a first cylindrical roller and a second cylindrical roller above, and spaced apart from, the first cylindrical roller, wherein each cylindrical roller is supported by a pair of bearing mounts located at the distal ends of the cylindrical roller for rotatably supporting the cylindrical roller; an endless belt wrapped around, engaged with, and tensioned between the pair of cylindrical rollers; at least one elastic element engaged with at least one of the bearing mounts of one of the cylindrical rollers for elastically engaging said one of the cylindrical rollers; at least one position measuring device proximal to the endless belt comprising at least one sensor capable of detecting and signaling a change in the lateral position of the endless belt relative to the position of at least one of the cylindrical rollers; and an adjusting element comprising a piston-cylinder unit coupled with the at least one elastic element for applying a force to the at least one elastic element, wherein the adjusting element is operatively associated with the at least one position measuring device for controlling the amount and direction of force applied to the at least one elastic element in response to changes in signals from the at least one position measuring device, wherein the operative association between the at least one position measuring device and the adjusting element is configured to realign the endless belt with the pair of rollers in response to signals from the position measuring device indicating a drift in alignment between the endless belt and the pair of rollers, wherein the at least one elastic element supports the cylindrical roller via the bearing mount with which the at least one elastic element is engaged, whereby the at least one elastic element is preloaded by a force of engagement with the first cylindrical roller and the adjusting element is capable of applying force to the elastic element additively and also subtractively relative to the preload force.