Abstract: A valve actuator system for use above or under water is disclosed wherein at least one gas generator (1, 2) is provided for controlling the system. The gas generator(s) can be actuated by remote control, by use of electric cables or hydro-acoustically without the use of cables. Locking mechanisms may be provided in order to lock the actuators in open and/or closed positions. The locking mechanisms may be actuated by the gas generator(s). Each gas generator is equipped with its own safety system, in that the charge itself is protected by a piston (26), thermal insulation (32) and a burst disc (31). The valve actuator is protected against excessive pressure by a safety shear disc (13, 14) connected with a dead volume (10). Two-way control of actuators is achieved by using a bisected piston system.

Abstract: Landing deck for aircraft, in particular for helicopters, on seagoing vessels and offshore installations, such as platforms. When fuel is leaking from a helicopter after an accident, as for instance an unsuccessful landing, a fire often starts. In order to reduce the combustion intensity and the duration of such a fire continuous grooves or channels (8) are formed in beams of steel or metal, of which the deck is made, in the surface facing upwardly. Thereby fuel which has leaked out will be collected in the grooves or channels. The air supply to the grooves or channels is poorer than the air supply to fuel situated on decks without grooves or channels, and the combustion intensity, therefore, is reduced. Moreover, the combustion takes place on the surface of the liquid, and it is possible to drain a substantial part of the fuel without ignition thereof. Fuel may be collected from the grooves or channels by means of a collecting manifold or gutter.

Abstract: A smoke grenade comprising a launching device (1), an instantaneous smoke device (2) and an IR-smoke generator (3) is provided with a casing (4) which can be deformed to guiding/supporting fins (4').

Abstract: A practice rocket for antitank weapons comprising a head and a support rod fastened to the head, the support rod carrying a tracer charge at its rearward end, and a propulsive charge in the form of gunpowder rods distributed around the support rod. The gunpowder rods are fastened to the head or to a disc attached to the head, and the support rod and the gunpowder rods are surrounded by a sleeve having a cylindrical portion and a narrow portion constituting a nozzle. The tracer charge is situated in front of the nozzle, and is ignited simultaneously with the firing of the rocket.

Abstract: A safety device for a projectile, adapted to make a barrier between an ignition charge in the forward end of the projectile and one or more incendiary and/or explosive charges situated behind the ignition charge. The device comprises two discs having concentric apertures therethrough, situated behind the ignition charge. A plug constituting the barrier is situated in the aperture in the foremost disc, and a split ring which is held together by a spring supports the plug, the split ring being supported by the rearmost disc. The plug comprises at least one portion adapted to seal the aperture in the foremost disc when being exposed to pressure developed by firing of the ignition charge prior to arming of the projectile. Arming takes place only when the projectile reaches a rotational velocity sufficient to open the split ring because of the centrifugal forces, whereby these forces exceed the resistance of the spring.

Abstract: Improvements in a multi-capability projectile having a heavy primary penetration element surrounded by a splintering and fragmenting secondary penetration element which extends forwardly of the primary penetration element to form a cavity having a bursting charge therein, the projectile having a nose portion forwardly of that cavity with an ignition charge therein. The rear of the secondary penetration element is stepped inwardly to form a smaller recess which receives and holds the rear end of the primary penetration element. A shoulder adjacent this smaller rearward portion can be formed in accordance with an improved method with an annular groove, according to which the portion of that shoulder radially inwardly of the groove is urged against the side of the primary penetration element to form a rimmed part which secures the same. The annular space surrounding the forward end of the primary penetration element can be filled with an incendiary charge, the bursting charge being located forwardly thereof.

Abstract: Improvements in a multi-capability projectile having a heavy primary penetration element surrounded by a splintering and fragmenting secondary penetration element which extends forwardly of the primary penetration element to form a cavity having a bursting charge therein, the projectile having a nose portion forwardly of that cavity with an ignition charge therein. The rear of the secondary penetration element is stepped inwardly to form a smaller recess which receives and holds the rear end of the primary penetration element. A shoulder adjacent this smaller rearward portion can be formed in accordance with an improved method with an annular groove, according to which the portion of that shoulder radially inwardly of the groove is urged against the side of the primary penetration element to form a rimmed part which secures the same. The annular space surrounding the forward end of the primary penetration element can be filled with an incendiary charge, the bursting charge being located forwardly thereof.

Abstract: A tubular projectile having a rear end with a sabot and an open front end is characterized in that it comprises an interior and an exterior cylindrical wall, concentrically arranged, between which at least one incendiary charge is provided in front of at least one explosive charge, as seen in the moving direction of said projectile, and that said forward combustion charges are covered by a cover in front.

Abstract: A smoke shell for providing successive ignition of slow burning and fast burning smoke emitting charges. A steel shell containing a slow burning charge is ejected in a delayed time period after an inner casing with its upper fast burning charge has been ejected.

Abstract: Austenitic steel having 16-25% Mn, 1,1-2,0% C, 0,2-2,0% Si, 0,5-5% Cr, 0,1-0,5% Ti, 0,3-4,0% Mo with or without addition of up to 0,5% of one or more of Ce, Sn and carbide forming elements like V, W, Nb (Cb), max. 5% Ni and max. 5% Cu, the remainder being Fe and impurities to max. 0,1% P and 0,1% S.

Abstract: A smoke cartridge for producing instantaneous smoke, particularly for screening a vehicle. A casing, preferably made of aluminum, has a first elongated compartment in which a plurality of annular smoke elements are stacked one above the other with a common central opening passing through all of them. A second compartment adjacent the first compartment has a discharge composition therein and a mechanism for igniting the same. When ignited, the discharge composition causes a jet of flames to pass through the central opening between the smoke elements, igniting the latter. A further compartment contains a further discharge composition, preferably ignited after a delay, for propelling the entire casing after the smoke elements have been discharged therefrom.

Abstract: A method and a device for making a composite profile comprising two metal members which are held apart from each other by means of at least two insulating bars whose edges are clamped in grooves formed between flanges on the metal members by deforming the flanges, said method comprising the use of a basic, one-piece metal profile in which inner flanges are interconnected, the connection being broken in conjunction with deformation of the flanges, said device comprising cutting elements adapted to at least partly break the connection between the inner flanges.

Abstract: A projectile has a primary penetration element arranged at the rear end, and surrounded by a substantially tube like secondary penetration element, so that in front of the primary penetration element is formed a cavity within the secondary penetration element. The cavity contains a bursting charge or bursting and incendiary charges, ignitable by means of an ignition charge arranged in the nose of the projectile upon impingement against a target. The construction is such that the primary penetration element is positively prevented from moving forwardly into the cavity before the projectile hits a target and the secondary element is substantially fragmented. The projectile gives considerable splinter and fragmentation in lighter to medium targets, while functioning generally as a purely armor piercing projectile against heavy targets.

Abstract: A smoke grenade for providing screening. A container has in the lower portion thereof a discharge composition ignited by a primer composition for igniting an ignition/bursting composition which in turn ignites a set of easily ignitable smoke charges, preferably disc shaped smoke charges surrounding the ignition/bursting composition. Ahead of the first charges in the direction of travel of the grenade is a further smoke charge which is compact and hence more slowly ignitable than the first set of charges. A delay booster and a further primer composition ignite this further smoke charge after a delay.

Abstract: A delay detonator element having a short delay time, especially 0.1-5.0 ms and advantageously 0.3-2.

Abstract: The present invention relates to an arrangement in or relating to a valve comprising a housing having an inlet and an outlet whose interconnection is closable by means of a differential piston slidably arranged in a cylinder in the housing, said differential piston being equipped with a bore interconnecting its large and small sides, said valve further comprising a conduit or the like leading from the chamber in the housing on the large side of the differential piston to the outlet, said conduit or the like being equipped with a pilot valve for closing and opening of the conduit. Valves of this type may be used for irrigation purposes in agriculture. By controlling the pilot valve of the valve by means of for instance a timer, the valve may automatically be brought to open for the water supply to the spreaders at a predetermined time and again to close the water supply when the irrigation has lasted for a sufficient length of time.

Abstract: A method and means for gauging of threads, by use of a gauge roller, for the purpose of detecting possible defects in the thread profile. The gauge roller, having different areas which have the correct profile of parts of the thread groove and depressions between said areas, is mounted on at least one lever for permitting approximately radial movement of the gauge roller. A reference for indicating and/or measuring said movement is established by mounting a reference element in the vicinity of the gauge roller, and movements of the gauge roller caused by defects in the thread are indicated and/or measured relatively to the reference. The reference may be established by use of a roller having the correct profile of the thread, whereby the relative radial and/or axial movement between the gauge roller and the reference roller is indicated and/or measured.

Abstract: A projectile contains a load to be ejected therefrom during a flight and includes a one-piece casing having a streamlined outer surface and having a portion containing the load. The casing has a reduced wall thickness at a section of such portion, and a metallic liner is cast onto the inner wall of the casing at such section, the liner having an inner diameter substantially equal to the inner diameter of the remainder of the casing at such portion. An external guide ring on the casing is located on the greater wall thickness thereof, and projections on the inner wall of the casing at such section engage grooves provided in the liner.

Abstract: A safety device for a projectile is provided which includes a charge adapted to function as either an ignition charge or as a booster and relay charge. The charge comprises at least two components each of which comprises solid particles. These solid particles are disposed in the same cavity in the projectile and are entirely or partly separated. The particles forming the components are arranged in relation to each other such that the two components will be mixed subsequent to the firing of the projectile, responsive to the acceleration, rotation and retardation forces to which the particles are subjected after the projectile is fired. The two components comprise an oxygen donating component and a fuel component, and a third component for promoting mixing of the two may also be included.

Abstract: A projectile having at least one incendiary charge adapted to ignite on impact and burn through to a bursting charge rearwardly thereof includes an elongated opening in the incendiary charge for increasing the intensity of burning thereof.