This invention relates generally to polymers suitable for making elastomeric films, membranes or sheets. More specifically, this invention is directed to polymers of the ethylene, alpha-olefin, diene terpolymer type that are reactor blends of two components, an amorphous major component and semicrystalline minor component, wherein the viscosity of the major component is less than one fourth the viscosity of minor component. These polymers are particularly suitable for elastomeric membranes such ...

A biohazard mask for civilian use comprises bidirectional HEPA filtering to protect both personal and public health during an outbreak. Several measures are taken to maximize comfort and wearability, such as comfort-fit through a gel seal, anti-fogging protection through separation of the eye volume from the mouth-nose volume and through eye moisture release valves, heat-dissipation through a net suspension, and overpressure release valves to maintain the face seal during coughing or sneezing. W...

A process is described for preparing polyoxymethylene by contacting a formaldehyde source with a catalyst of the formula I [ML.sup.1.sub.aL.sup.2.sub.b].sub.c.sup.m+Z.sub.cm/n.sup.n- (I) where M is a metal of group VIII; L.sup.1 is a ligand having at least one .pi.-electron pair; each L.sup.2 is independently tetrahydrofuran or a ligand which is displaceable by tetrahydrofuran; Z is an anion; a is 1 or 2; b is an integer from 0 to 4; c is 1 or 2; and m and n are integers from 1 to 4.

A form suitable for airline ticketing which includes as one exterior ply a web wider than intermediate plies and wherein the overlapping portion is equipped with control openings.

A balloon filled with a gas mixture of ammonia and n-hexane will stay at a onstant altitude due to condensation at altitude of the n-hexane. Since both components are liquid below about 50 meters in the ocean and together with the load are buoyant, the aerostat may be submarine launched and rise to the surface at which point the ammonia and n-hexane evaporate and take the balloon and load to its preset altitude.

Disclosed are phosphorus glasses containing beryllium and fluorine and Nd.sup.3+ as the active lasing species.

Novel systems, useful in molding and in prepreg formation, contain two components capable of reacting to form an infusible material. The two components are preferably an unsaturated polyester and a crosslinker comprising a substituted acrylamide or similar compound. The systems are substantially non-volatile; solid at ambient temperatures; liquid, homogeneous and non-reactive at higher temperatures; readily and reversibly convertible from solid to liquid; and capable of conversion to said infusi...

A wire connector for connecting wires to each other having a small wire collection space and which transmits a small shock load to the wires connected therein is formed by bending a metal plate at both sides of a central portion to form a closed ring having open ends at both ends thereof. Depressions that protrude toward the interior of the closed ring so that they approach each other are formed at the central portions of both side walls of the closed ring. A vertically extending slot is formed ...

A poker game based on an Aces and 8's legend pays a high multiple of the amount bet for the highest winning hand containing two pair of aces and 8's, and pays a lower multiple of the amount bet for the second highest winning hand containing two pair other than aces and 8's. A hand of less than a pair and neither an ace nor an 8 wins the amount bet, and all other hands lose. Dealing and betting rules can vary, and the game is adaptable to machine play.

An endoscope suitable for autoclaving in accordance with the present invention has a barrier that separates an interior from an exterior. When the barrier is located at a predetermined position, consideration is taken into a displacement of the barrier between the position of the barrier observed before start of autoclaving and the position thereof observed after completion of the autoclaving during which predetermined pressure is applied and a thermal load is imposed.