Abstract: An improved die seal ring is described which includes at least one break. In the region of the break in the die seal ring, the doping is modified so that the impedance of the electrical path across the break through the substrate is increased. Offsets in the break may also be used and the offset may be within a break in a track and/or between breaks in different tracks, where the die seal ring includes more than one track.

Abstract: An improved die seal ring is described which includes at least one break. In the region of the break in the die seal ring, the doping is modified so that the impedance of the electrical path across the break through the substrate is increased. Offsets in the break may also be used and the offset may be within a break in a track and/or between breaks in different tracks, where the die seal ring includes more than one track.

Abstract: A log forwarder comprising a chassis having two sides, a separate series of rollers mounted substantially along the length of each side of the chassis, each series of rollers having an endless track made substantially of elastomeric material that extends around the rollers so as to contact the ground, with the series of rollers extending the ground contact area and weight distribution substantially along the length of the log forwarder, a flat bed for receiving logs; a covered cab; a boom adjacent said covered cab adaptable for moving logs to and from the flat bed, the covered cab including within it a first set of controls for maneuvering the log forwarder and a second set of controls for manipulating the boom, and the log forwarder having a height and a width which are less than height and width dimensions that require a road travel permit.