Abstract: A track mounting system for mounting electronic devices is described. The mounting system includes a mounting plate having a pair of tracks extending forwardly and a pair of mounting brackets to which a device is attached. The mounting brackets include sidewardly extending mounting fingers which engage inner surfaces of the tracks to lock the brackets to the tracks by forcing edges of the mounting fingers to "bite" into the inner surfaces of the tracks. The edges of the mounting fingers are biased into the inner surfaces of the tracks by force from a tensioning arm which is flexed as the device is rotated into its mounting position. The device and brackets are retained in their alignment orientation by retaining tabs which engage the tracks. To ease alignment of the mounting brackets to the tracks, a guide extension extends from the mounting brackets and is curved sidewardly to guide the brackets into their alignment position as a device is rotated into its mounting position.

Abstract: A heat sink and transistor retaining assembly for installation onto a printed circuit board. The assembly has a thermally conductive base plate forming a heat sink adapted to be disposed adjacent to the board, a first electric insulator attached to the base plate, a plurality of transistors positioned at predetermined positions against the first electric insulator so as to be electrically insulated from the base plate, a second electric insulator adjacent to the transistors with the transistors sandwiched between the insulators, and a resilient clamp attached to the base plate with the electric insulators and transistors positioned therebetween. The clamp has a plurality of retaining fingers that exert a retaining force on the transistors between the first and second insulators to retain the transistors in predetermined positions relative to the board.

Abstract: A flat, flexible, plastic container has an openable and a closed end separated by a sealed region dividing the container into a first and second chambers. The first chamber extends from the openable end to the closed end which contains a filtration assembly separating the first and second chambers. When the first chamber is positioned above the second chamber and filled with contaminated fluid, gravity draws the contaminated water from the first chamber through the filtration assembly to fill the second chamber with filtered water.