Abstract: A ferrous object detection circuit for use with automated document processing devices is provided for detecting and sorting documents affixed with ferrous objects such as staples and paper clips. A static magnetic field is positioned to intersect a document path. At least one inductive transducer is positioned relative to the magnetic field to detect changes in the magnetic field resulting from documents traveling along the document path. The movement of ferrous objects through the static magnetic field produces a detection signal in the inductive transducer, identifying the document as having a ferrous object.

Abstract: A load zone area of a conveyor system which includes a continuous belt which carries bulk materials such as stone, ore, grain, etc. to a discharge point where the material leaves the belt as the belt wraps around a head pulley and returns along the under side of the conveyor system to a tail pulley which brings the belt back to a point which it can be loaded again. The load zone area typically has multiple support rollers closely spaced together to minimize the effect of the material impacting the belt which deflects the belt downward, thus creating a gap between the belt and the skirt seal causing leakage.

Abstract: An elongated frictional drive pad is attached to an uppermost surface of a drive chain for powering a plurality of rollers in a roller bed. The drive pad is connected to the chain by a plurality of fastening pins which have body portions and enlarged end caps connected to the body portions. The enlarged end caps have diameters greater than the body portions.