Abstract: In its broadest aspect the invention provides apparatus for separation of contaminants from a liquid, said apparatus comprising a gravitational separation means (3) and a screen filter means (11), said screen filter means receiving output from said gravitation separation means (3), and wherein said screen filter (11) means includes woollen fibre.

Abstract: Disclosed herein is a modulator module that uses a radio receiver to search the broadcast band for an unoccupied area (ie., unutilized spectrum) where a modulator can transmit without interference. Additionally, it automatically adjusts the modulator and car radio to the same frequency within one of the unoccupied areas to exploit the free spectrum. The system further provides a hands-free approach to using a modulator in a vehicle by automatically adjusting both the modulator and car radio to the same frequency without manual intervention from the user.

Abstract: A panel-like lid is secured to a receptacle by a pintle for pivotal movement between a closed position and an open position about an axis whereby the lid remains horizontal at all times. In the closed position, a continuous groove in the underside of the lid matingly receives a bead upstanding from the upper edge of the sidewall of the receptacle. A compression spring encircling the pintle normally urges the lid downwardly against the receptacle. In response to movement from the closed position toward the open position, the lid is cammed upwardly to disengage the groove from the bead.

Abstract: A panel like lid is secured to a receptacle by a pintle for pivotal movement between a closed position and an open position about an axis whereby the lid remains horizontal at all times. In the closed position, a continuous groove in the underside of the lid matingly receives a bead upstanding from the upper edge of the sidewall of the receptacle. A compression spring encircling the pintle normally urges the lid downwardly against the receptacle. In response to movement from the closed position toward the open position, the lid is cammed upwardly to disengage the groove from the bead.

Abstract: A portable cooler has an inner container and an insulated jacket with means for closing the opening to the container. The container is constructed of a heat-conducting material, the outer jacket is provided with one or more pockets, the interior of which communicate with a portion of the heat-conducting wall of the container so that items to be warmed or cooled by the contents of the container may be stored in the pocket. The latter is accessible without opening the container.