Abstract: This invention relates to an Electrical Junction Box with an external Built-in Fitting and clamp for securing armored metal cable to the Electrical Junction Box. The Built-in Fitting is extruded from a side wall of the Electrical Junction Box and has at least one pry-out for receiving an armored metal cable. A clamp is attached to the Built-in Fitting with threaded fasteners. As the threaded fasteners are tightened, the armored metal cable is clamped in the opening of the side wall of the Built-in Fitting.

Abstract: The Adjustable Mud ring consists of a collarless frame, having a central opening for an Extending Member, perimeter fastener openings for connecting to a junction box, and bendable tabs for securing the frame to an Extending Member, which is boxed shaped with a central opening for electrical apparatus, fixed tabs with openings for threading adjustable fasteners into openings in the frame, and bendable tabs for securing the system to a wall. A Grounding Spring Clip, constructed from sheet-metal, folded to create a compressive spring, with an opening for a fastener, allows proper grounding. Add-on Rings are boxed shaped with a central opening, openings on flat, fixed perimeter tabs for threading bolts into to an Extending Member, and bendable tabs for securing the system to a wall. A bracket, with openings for fasteners for attaching the assembly to wall members, can be made a part of the frame.

Abstract: A heat sink assembly is provided to afford cooling for electronic components mounted on a circuit board. The assembly consists of a thermal conducting substrate base with a top and bottom side. Radiating fins are attached to the bottom side of the base. The fins are cooled by external air. The component on the circuit board is connected to the top surface of the heat sink base by means of thermal conducting spacers which create a gap between the bottom surface of the circuit board and the top surface of the heat sink base. A first hole is placed in the heat sink base and driving means are attached to the said base at the area of the first hole. A rotating fan is operatively attached to the said driving means in such a manner that when the fan rotates air is forced between the gap created between the circuit board and the heat sink base. A second hole is installed in the heat sink base. The air flowing from the fan is exhausted through the said second hole.