Abstract: The present invention concerns a novel AlH.sub.3 crystallizing liquid comprising crystalline aluminum hydride, an aliphatic ether and an inert organic liquid. The invention also concerns a novel process for providing the crystallizing liquid.

Abstract: A solid double base propellant comprising from about 5 to about 60 per cent of a specific nitramine oxidizer, from about 5 to about 60 per cent of triaminoguanidinium azide, triaminoguanidinium hydrazinium diazide or mixtures thereof, and from about 35 to about 60 per cent of a plasticized nitrocellulose binder.

Abstract: Many chemical reactions involving high pressures are carried out in reactor or distillation vessels. As a safety feature, the vessel is usually connected into an alarm system designed to shut it down if an overpressure condition occurs. During a routine safety check of the alarm system the vessel is isolated from the system by manually closing a valve. Following the safety check, the valve must again be opened to connect the vessel into the system. Some situations may require that a valve be left in closed position following a safety check, or some other operation.The valve of this invention can only be closed or opened with a key member which engages the valve stem. The key is an integral part of the equipment carried by the technician who makes the safety check, so that the act of disengaging the key from the valve stem ensures that the valve is left in either open or closed position, as desired.

Abstract: The apparatus disclosed herein is useful for testing unconsolidated sand samples from oil-bearing or gas-bearing earth formations. Basically, the device comprises a cylinder equipped with opposing pistons. The sand sample is placed in the cylinder between the pistons and then compacted by moving the pistons toward each other. The force for moving the pistons is supplied by a fluid, such as air or hydraulic oil, which is injected under pressure into a chamber defined in the cylinder behind each piston. The compacted sample is then subjected to various test procedures involving permeability measurements, consolidation tests, and flow studies.

Abstract: Disclosed is a protective housing unit for a liquid sample container. Basic components include an outer housing member and an inner housing member, which are defined by cylindrical sections. The outer member has an open top, an opening in the side wall, and a bottom which connects to a drain line. Positioned within the outer member is a plate for supporting a liquid sample container, such as a bottle. The inner member has an open top, an open bottom, and an opening in the side wall. Also, the inner member is adapted to fit down into the outer member and to rotate within the outer member. A liquid sample is directed into the container through a fill pipe, which connects to an inlet line and which extends through the top of the inner member and down into the container. During filling, the sample container can be completely enclosed by rotating the inner member to mis-align the side wall openings in each member.