Abstract: An apparatus for locating a body cavity having a fluctuating fluid pressure by signaling the fluctuating pressure when the cavity is entered and then transporting fluid either into or out of the cavity.

Abstract: The present invention is a package for housing and mixing two materials, such as epoxy resin and polyamine adduct, together to form an adhesive. Two sheets are joined together to form the outer periphery of the bag. A third sheet is secured between the outer sheets and divides the package into two compartments. One compartment includes a line of perforation holes that are easily ruptured when a user applies pressure to the external area of the compartment. A cap covers the perforation holes so that the material contained within the rupturable bag will not leak into the other compartment. When the one compartment is ruptured, the adduct that is contained therein is released into the other compartment and mixes with the resin. After the two materials are completely mixed the adhesive is ready for use.

Abstract: A powder coating booth and a construction method therefor comprise a pair of inflatable polymer walls defining between them a booth inner space, a booth entry end and a booth exit end, and supporting the inflatable walls in spaced orientation to define between them the booth inner space. A mechanism is provided between the walls for recovery of powder which does not adhere to articles conveyed through the booth inner space. The polymer walls comprise one or more cells. The step of providing the polymer walls comprises inflating the cells. The method also includes the step of covering the cells with a sheet of polymer film forming an envelope for the cells. Illustratively, the cells comprise a layer of bubble packaging material. Alternatively, the polymer walls comprise thermoformed cores and a polymer film envelope enveloping each core and closed to provide suitable inflation of each wall. Illustratively, the inflatable walls are supported in spaced orientation by a conventional powder spray booth.

Abstract: An apparatus for locating a body cavity having a fluctuating fluid pressure by signaling the fluctuating pressure when the cavity is entered and then transporting fluid either into or out of the cavity.

Abstract: A method of constructing a blood flow conduit provided with external inflatable balloons and having rigid end portions for facilitating insertion into blood vessels and means for detecting pulsatile flow in the conduit and excessive pressure in the balloons.

Abstract: A improved blood flow conduit provided with external inflatable balloons and having rigid end portions for facilitating insertion into blood vessels and means for detecting pulsatile flow in the conduit and excessive pressure in the balloons.