Abstract: A gas generator apparatus for generating gas for inflating a motor vehicle airbag comprises an ignition device including a first housing and a first pyrotechnic charge disposed in the first housing; a gas generator including a second housing having an opening, a sealing membrane covering the opening for hermetically sealing the second housing and being located adjacent to the first pyrotechnic charge in the first housing, a second pyrotechnic charge located in the second housing adjacent to the membrane, and a gas generating pyrotechnic material arranged in the second housing to be responsive to a combustion of the second pyrotechnic charge, wherein a combustion of the first pyrotechnic charge initiates a combustion of the second pyrotechnic charge through the membrane which in turn initiates combustion of the gas generating pyrotechnic material.

Abstract: A method and an arrangement to determine the lowest speed at which an activating pin activates a detonator, this being achieved by a hydraulic medium, the viscous property of which is used to control the transfer of energy from the activating pin to the detonator.

Abstract: The disclosure relates to a method of producing charges for cannons with extremely high charge density and favorable burning properties from the standpoints of both wear and pressure vs time characteristics. According to the invention, the charge is formed of mutually parallel, bundled tubular propellant rods which have been provided with specially designed rupture points which cause the charge to be ignited as a pure tubular propellant charge of large length in relation to the diameter of the combustion channels, but finally burns as a pure granular propellant. The disclosure also relates to propellant charges produced according to the disclosed method.

Abstract: A detonator for non-electric detonation systems for blasting charges intended to be initiated by a detonating fuse includes a passage provided in the body of the detonator for passing a detonating fuse through the passage. The detonator includes a conventional percussion cap which is immediately initiated by the detonating fuse for initiating the detonator. Also a booster charge intended for the detonator is provided with a reinforced central channel for the detonating fuse.

Abstract: An adjustable frame 6 to 20 applied to a bed, supports selectively rotatable rolls 21, 22 at the level of the bed mattress 2 in parallel and close relation thereto. Said rolls are connected to an electric motor 66 via driving chains 40 around the underside of the bed. A draw sheet 28 extends between the rolls across the upper side of the bed and is wound on both rolls with the patient on the draw sheet. A control box 72 operating on low voltage (e.g. 24 V) current enables the patient or a nurse to turn on the electric motor to rotate in one direction or the other. Each roller is provided with an automatic driving and free wheel clutch 34 providing for driving of each roll only in one direction, namely the direction of reeling, so that when the one roll is being driven the other is freely rotating and vice versa. Furthermore, each driving and free wheel clutch unit 34 can be manually connected and disconnected by use of an external eccentric 48.