Abstract: A collapsible solar system includes a frame structure and a sunlight tracking arrangement. The frame structure includes a supporting base adapted for mounting on a platform and a solar panel pivotally coupling with a rotational frame which is rotatably supported on the supporting base. The solar panel is pivotally folded between a stored position that the solar panel is laid flat on the platform, and a tracking position that the solar panel is pivotally folded at an inclination angle to be perpendicular to the direction of the sun. The sunlight tracking arrangement includes a horizontal driving unit selectively adjusting a horizontal direction of the solar panel, and a vertical driving unit pivotally lifting up the solar panel until the solar panel is pivotally folded at the inclination angle to be perpendicular to the direction of the sun.

Abstract: A door locking apparatus for use on a door and an associated door jamb is provided. The door locking apparatus includes a custom striker plate and a U-shaped element or U-Bar. The U-shaped element has two arm portions and the custom striker plate has two arm receiving apertures for receiving the arm portions of the U-shaped element. The U-shaped element partially encircles the shank of a door knob assembly and the two arm portions fit into the two arm receiving apertures to lock the door. A device for keeping the U-shaped element in a locked position is built into the U-shaped element. A preferred embodiment utilizes a notch on the U-shaped element to keep the device in a locked position.

Abstract: A door locking apparatus for use on a door and an associated door jamb is provided. The door locking apparatus includes a custom striker plate and a U-shaped element or U-Bar. The U-shaped element has two arm portions and the custom striker plate has two arm receiving apertures for receiving the arm portions of the U-shaped element. The U-shaped element partially encircles the shank of a door knob assembly and the two arm portions fit into the two arm receiving apertures to lock the door. A device for keeping the U-shaped element in a locked position is built into the U-shaped element. A preferred embodiment utilizes a notch on the U-shaped element to keep the device in a locked position.