Patent ID: 6098786
Filing Date: 2000-08-08
Classification: B65G,H01L

Abstract:
An apparatus for conveying an object in a cleanroom, the cleanroom having a source of clean air generally above the apparatus and an evacuator generally below the apparatus for removing air from the cleanroom, comprising:a conveying assembly with a path for conveying objects in a direction, said conveying assembly including a plurality of powered roller shafts, said conveying assembly including a plurality of slippable rollers driven by said roller shafts, each said roller shaft including at least two slippable rollers rotatably coupled thereto, said conveying assembly having sides along the path, the sides being generally parallel to the direction of the path; anda plurality of sideskirts extending downward from the sides of said conveying assembly, said sideskirts providing a flowpath for clean air from the source that is generally downward through the path to the evacuator;wherein the path has an area, and said conveying assembly obstructs less than about forty percent of the area from the downward flow of air.