Abstract: An edge situated in high speed flow of medium is cooled by a tubular heat pipe having a longitudinal axis situated parallel to the edge. The exterior surface of the evaporator section of the heat pipe forms the edge. The heat pipe contains a working fluid existing in both gaseous and liquefied states. Heat input along the edge evaporates working fluid in the liquid state located in the evaporator section, and the heat is transferred transversely across the longitudinal axis of the heat pipe by the flow of vapor to the condenser section. The vapor condenses in the condenser section and releases its latent heat of vaporization. The condensate flows to the evaporator section by means of wicks composed of capillary material. The heat released into the walls of the condenser section is transferred through the walls by conduction and into another heat transfer device, for example, an active cooling apparatus or the evaporator sections of abutting heat pipes of conventional tubular configuration.

Abstract: A forward-weighted fishing lure is disclosed which will travel level underwater when drift-fishing from a boat, or even when the lure is simply hanging from a float of "bobber". The lure will also travel level underwater when it is retrieved or trolled. The lure comprises an elongate heavy body, a wire member protruding from the tail portion of the body, a spinner and a fish hook at the end of the wire member which fish hook is spaced from the spinner by spaced beads. The body is provided with a generally T-shaped cavity in which the wire member is removably inserted until an eyelet in the wire member protrudes from the body's upper portion at the balance point of the lure, so that the lure will be level when suspended underwater by a fishing line attached to the eyelet. The parts of the lure are interchangeable. The lure moves through the water with a swimming action simulating a minnow while utilizing even a slow water current so as to induce fish-attracting spinner action.