Nobel Kemi Ab

Bofors Explosives Ab

Per Sjoberg

Leif Svensson

Hermann Schmid

Anders Hafstrand

Jorgen Sandstrom

An airbag device including a gas-emitting substance chamber having an opening. A gas-emitting substance is provided in the gas-emitting substance chamber including between about seventy-six to about eighty percent by weight of a high energy explosive and about twelve to about fifteen percent by weight of a combustible binder. An igniter provided within the gas-emitting substance chamber ignites the gas-emitting substance. A pressure reducing valve arranged in the opening of the gas-emitting substance chamber maintains a desired pressure in the gas-emitting substance chamber during burning of the gas-emitting substance. A gas container having an opening contains a gas for oxidizing gas produced by burning of the gas-emitting substance. A closure closes the opening in the gas container. A mixing chamber is joined to the gas-emitting substance chamber and the gas container in the vicinity of the opening of the gas-emitting substance chamber and in the vicinity of the opening of the gas container. The openings of the gas-emitting substance chamber and the gas container are directed toward an interior of the mixing chamber. The mixing chamber includes at least one outlet for directing gas resulting from the burning of the gas-emitting substance toward an airbag. An airbag is interconnected with the mixing chamber and is inflated by the gas resulting from the burning of the gas-emitting substance.

Airbag device and propellant for airbags

The present invention comprises a method and apparatus for filling a space in at least one ammunition unit with a ready-mixed explosive containing a substance which imparts high viscosity to the explosive. The method comprises supplying the explosive into a flexible container with a single opening therein, positioning the flexible container into a second container adapted to withstand high internal pressure, applying a high pressure into the second container thereby exposing the flexible container to the high pressure, and pressing out the explosive from the flexible container through the opening in the flexible containers into the space in the ammunition unit upon application of the high pressure whereby filling the space with the explosive.

Method and a device for filling a space in an ammunition unit with

The disclosure relates to an explosive charge intended for the explosive jointing of, primarily, large-diameter pipes, such as pipeline pipes. The charge according to the invention is intended to be delivered as a unit ready to be applied immediately on site in the pipe. The only item which is not intended to be included is the detonator which is mounted in place immediately prior to blowing the charge. The charge includes, apart from explosive, also a polymer binder of a more closely defined type and gas blisters preferably in the form of microspheres of glass or plastic and metal or metal oxide powder. The scope of the invention embraces the general configuration of the charge and all components included therein.

Explosive charge for the explosive welding of large diameter pipes, and

The disclosure relates to a method for producing charges for explosive jointing of large-diameter pipes such as pipelines. According to the invention, such charges are formed in that a strip-shaped flat explosive is wound and joined together to form a circular ring of even thickness consisting of a plurality of closely abutting layers.

Growing community of inventors

Karlskoga, Sweden

Per Sjoberg