A positionable top for operatively positioning a power tool by adjusting the position of the top in relation to a frame. By utilizing multiple engaging slots on the frame and a matching projection on the square top, the top may be rotated, inverted, horizontally adjusted, and vertically positioned within...http://www.google.de/patents/US6209597?utm_source=gb-gplus-sharePatent US6209597 - Power tool mounting stand
