Abstract: A container opening device for use in combination with a conventional container having a bottom wall flexible walls a extending from said bottom wall to an upper opening, and a closure cap threadably engaged about the container opening. A closure film or seal member is provided to form a secondary seal about the periphery of the opening. A seal perforation blade is carried on an angular rod which is loaded internally of the container, and wherein the user, by pressing the walls of the container inwardly, causes the seal perforation blade and rod to extend outwardly and puncture the secondary seal, thereby making it possible to remove the contents on a safe, expedient basis, and normally without making physical contact with the contents.

Abstract: An improved cap valving means for hot air load-carrying balloons which is designed to be opened and/or closed rapidly so as to assist in control of the balloon. The valve and/or vent includes a disc which may be opened by applying a force to a pull cord, and wherein the applied force is provided with an improved mechanical advantage so as to unseat the disc and thereby open the interior of the balloon envelope to the ambient. In addition to the pull cord, the control cord includes a number of disc cords which are spaced at substantially equally arcuately spaced points around the circumference of the disc, to assist in guiding the disc in its opening and closing motion.