Abstract:
Piezoelectric percussion fuze for projectiles wherein mechanical impact energy is converted, in a piezoelectric transducer, into an electric voltage for the detonation of a primer charge, characterized in that the piezoelectric transducer is connected to the primer charge via a semiconductor element exhibiting a threshold value breakdown characteristic.
Abstract:
A propellant charge in the form of a powder strip having holes or apertures therein for indicating the length thereof to be used in a firing device having a cartridge chamber with guides on one wall to effect a coiling of the powder strip when inserted thereinto by way of an inlet slit from a magazine via a measuring device.
Abstract:
This invention relates to an irritant agent element such as a tear gas element which can be used for temporarily disabling persons at the target site with a minimum of risk of physical injuries and mechanical damage. The element comprises a tear gas cartridge containing tear gas-producing bodies and detonator and combustion means for deflagrating said tear gas-producing bodies, the feature of the invention residing in the provision of an envelope of resilient, readily deformable material surrounding said cartridge. Channels are provided in the envelope for the emanation of the tear gas from the cartridge.
Abstract:
Device for the inflation of safety cushions in motor vehicles wherein a single electrically actuatable charge is disposed in a case provided in one end of a container filled with gas under pressure, one side of said case facing the other end of said container being rupturable by said charge, and an axially displaceable member disposed in said container for rupturing the end of said container upon rupture of the one side of said case.
Abstract:
A safety device for vehicles, especially automotive vehicles, having a bag disposed in front of the occupant and being inflatable in the manner of a cushion, which bag is in operative connection via a diffuser with a source of compressed gas which can be actuated by an ignition device triggered by a release element responding when a predetermined deceleration value has been exceeded, wherein the diffuser is fashioned as a cover which is resiliently connected to the source of compressed gas and is disposed in the manner of a cap over the source of compressed gas so as to be displaceable to a limited extent in a telescopic manner.
Abstract:
The present disclosure relates to a primer for electric and percussion priming for use in accordance with the spark-gap principle which comprises a metallic capsule provided with a closed bottom, a thrust ring disposed inside of the metallic capsule and completely insulated therefrom by insulating means, and a gap charge provided inside the thrust ring and adjacent the closed bottom of the metallic capsule, the metallic capsule acting as a first lead electrode to the gap charge and the thrust ring acting as a second lead electrode for the gap charge.
Abstract:
An explosive charge actuated pressure valve which combines the features of a self-sealing poppet valve with the advantages of a rupturing diaphragm by providing a sealing element connected to a piston and biased in the closed position against a valve seat disposed in the passage between an inlet opening and an outlet opening, the sealing element being connected to a piston in a chamber which is in communication with an explosive charge capable upon ignition of driving the sealing element against the valve seat with a force sufficient to rupture the sealing element to open the passage between the inlet and outlet openings.
Abstract:
Training ammunition in the form of a projectile having spin braking means arranged in the front part thereof. The spin braking means includes a central bore extending from the tip of the projectile partially therethrough with the rear portion of the central bore being in communication with the outer surface of the projectile via discharge channels arranged about the central bore. The rear portion of the central bore is provided with a deflecting lobe having a cross section which increases rearwardly for directing the air flow into the discharge channels in order to minimize turbulence in the air flow. The central bore and discharge channels operate in the manner of a rotary compressor with radial rotors in that air flow therethrough during the flight of a spin stabilized projectile effects braking of the projectile in a predetermined manner to reduce the flight range of the projectile. With known flight characteristics of a projectile, the cross-sectional size of the central bore and discharge channels can be selected to produce a predetermined braking effect and a predetermined flight range for the projectile.
Abstract:
A PROCESS FOR PRODUCING SHAPED POWDER ARTICLES FOR PROPELLENT CHARGES BY PRESSING POROUS POWDER GRAINS HAVING EXTERNAL GEOMETRIC SHAPES EXHIBITING EDGES, SPIKES OR THE LIKE WHICH PERMIT THE GRAINS TO INTERLOCK WITH EACH OTHER. PREFERABLY THE GRAINS HAVE T, X, Y, OR V-SHAPES, ALSO DSCLOSED ARE SHAPED POWDER ARTICLES PRODUCED BY THIS PROCESS.
Abstract:
An electric switch which is responsive to acceleration and/or deceleration having at least one movable contact arranged in a housing and biased into electrically conductive connection with a corresponding contact surface arranged in the housing. A spring serves for biasing the movable contact piece with a constantly effective force of a predetermined magnitude which is determined by the axial extent of the spring and a screw element serves for controlling the axial extent of the spring to vary the magnitude of force provided thereby. In response to an accelerative force in a predetermined direction, the contact piece overcomes the biasing force and moves away from its contact surface thereby interrupting the conductive circuit path through the switch.