Abstract: A plurality of common, modular panels attach to a support frame carrying power and data connections for an electronic display sign. LEDs are used as the light mechanisms for illumination of said sign. Each modular panel is under separate microcontroller control and includes its own on-board memory. The electronic display sign includes a master control element that connects to a PC or laptop computer for loading data or programs into the memory of each modular board. The master control sends out commands or data that is interrogated by every microcontroller on each modular panel of the entire sign such that only the panel with a unique identification number will process data intended therefore. The on-board memory allows for the creation of a virtual screen such that each modular panel of the entire sign is rendering the entire message being displayed on said sign even though each modular panel may only be actually illuminating a portion of said message on the LEDs of each panel.

Abstract: An improved foundation repairing system includes a plurality of pierheads secured to exposed portions of a foundation. Each of the pierheads has an angular ledge abutting an outer surface and a bottom surface of the foundation. A pier is driven, section by section, vertically downwardly through a pier guide of a respective one of the pierheads by a pier driver in conjunction with a pier driving bracket in order to obtain the necessary support from the underlying ground. The pier driver has a pair of opposing first upright members straddling the pier guide, which are temporarily attached to the foundation and a pair of opposing first foot members operably extending beneath the foundation. A plurality of secondary lifting mechanisms, in cooperation with piers previously installed by the pier driver, are adapted to cooperatively elevate the foundation. The pier guides of the pierheads are fixedly connected to the respective piers to provide permanent support for the foundation.

Abstract: A torque limiter with a rotatable housing having a series of dowels arranged annularly about an interior surface thereof and a sleeve having a pair of arms with a roller at the tip of each arm. The rollers are mounted to engage pairs of adjacent dowels selectively for transmitting torque from the housing to the sleeve. A lock-out mechanism disengages the rollers and dowels when a preset torque limit setting is exceeded by torsional resistance of the sleeve relative to the housing.