Abstract: Displays with integrated photovoltaic cells, as well as related systems, components, and methods, are disclosed.

Abstract: Displays with integrated photovoltaic cells, as well as related systems, components, and methods, are disclosed.

Abstract: This invention relates generally to the field of commercial and residential electrical wiring installation and, more specifically, to the protection of electrical wires when they are pulled into and out of electrical junction or other electrical wiring boxes. The preferred embodiment takes the form of a rectangular frame which snaps onto and covers the sharp upper edges of a box through which wire is to be pulled. It is preferable that the upper surface of the instant invention be manufactured so as to be smooth and rounded so that wire may pass over it with out risk of damage. Additionally, the preferred method of attaching the instant device to the junction box is by way of a slot or groove which has been cut so as to match the box dimensions as nearly as is possible.

Abstract: A cylindrical housing mounts a piston therewithin, wherein the piston is reciprocatable relative to the housing, wherein the housing includes a "T" shaped junction, with a first check valve mounted to the "T" shaped junction at a first exhaust conduit to project debris into a flexible porous bag. A second check valve mounted at a lower terminal end of the housing permits directing of fluid into the housing for projection into the bag during use. The bag is formed with reinforcing plates for maintaining the bag in alignment relative to the exhaust conduit. The piston includes discs alternating with flexible membranes, and is secured by easily removable locking pins allowing easy piston maintenance. The apparatus can be used to remove debris from swimming pools.