Abstract: A scintillating composition for detecting neutrons and other radiation comprises a phenyl containing silicone rubber with carborane units and at least one phosphor molecule. The carborane units can either be a carborane molecule dispersed in the rubber with the aid of a compatiblization agent or can be covalently bound to the silicone.

Abstract: A scintillating composition for detecting neutrons and other radiation comprises a phenyl containing silicone rubber with carborane units and at least one phosphor molecule. The carborane units can either be a carborane molecule dispersed in the rubber with the aid of a compatiblization agent or can be covalently bound to the silicone.

Abstract: The invention provides a portable ice skating rink including elongate curb structural members and a liner of flat flexible sheet material. The liner is economically made of sheet plastic for example with a bottom sheet and elongate sleeves around the periphery of the bottom sheet. The curb members, such as 4.times.4 lumber pieces, are inserted into an open end of each sleeve to form a water retaining structure. The sheet material and seams have resistance to water permiation sufficient to retain a shallow pool of water covering the bottom sheet during freezing in outdoor conditions to form an ice skating surface. Assembly of the rink is minimal. The user need only lay the liner in the intended location and slide the curb members into the preformed sleeves about the periphery. The interior depression formed is filled with water and allowed to freeze in outdoor conditions.

Abstract: A flexible jumper strip has a V-shape for the ends of its leads in order to increase its mechanical strength. In one embodiment the ends of the leads are folded back to give even more strength. In making the jumper strip conductor leads are formed on a conductor sheet laminated to an insulator sheet. Then the lead ends are given a V-shape with a mechanical punching device.

Abstract: A method of making and electrically interconnecting layers of printed circuitry involves the steps of: (1) coating an insulator on both sides with an adhesive; (2) punching holes through the insulator at points where interconnections are to be made; (3) laminating conductor planes to both sides of the insulator by means of the adhesive; (4) forming printed circuit patterns on the conductors such that a proper conductor geometry is created at the points where the interconnections are to be made; (5) applying pre-punched, adhesive-coated cover layers of insulation over the exposed printed circuits, except in the area of the interconnections; and (6) applying solder to the conductor pattern. Since the geometry at the interconnections is carefully controlled a solder bridge is formed, which connects the two conductor patterns during step (6) by the flow of solder into the interconnection area, past the upper conductor, to the lower conductor.