Abstract: A gas generator includes at least two functional subassemblies and at least two retention parts. The functional subassemblies each have an axis defining an axial direction and at least one outer dimension in a plane normal to the axial direction. The retention parts are each radially crimped for retaining one of the at least two functional subassemblies on the gas generator. The at least two retention parts are formed on the same part of the gas generator and the at least two functional subassemblies are positioned on the gas generator with a center distance of axes less than or equal to 1.5 times this outer dimension and that each retention part is radially crimped over at least 90% of its periphery.

Abstract: A gas generator includes at least two functional subassemblies and at least two retention parts. The functional subassemblies each have an axis defining an axial direction and at least one outer dimension in a plane normal to the axial direction. The retention parts are each radially crimped for retaining one of the at least two functional subassemblies on the gas generator. The at least two retention parts are formed on the same part of the gas generator and the at least two functional subassemblies are positioned on the gas generator with a centre distance of axes less than or equal to 1.5 times this outer dimension and that each retention part is radially crimped over at least 90% of its periphery.

Abstract: The invention relates to a piezochrome composite comprising a matrix of a piezoelectric material with particles of a spin transition compound. The invention also relates to a device that beside said composite also comprises a voltage supply connected to electrodes provided on said matrix. In one embodiment is this device provided with a temperature stabilising device.

Abstract: The present invention relates to a method of detecting sources of coherent radiation, which is achieved by depicting, simultaneously or at times close to each other, that part of the environment which is of interest by a radiation sensor, on the one hand with a vortex mask in front of the sensor (FIG. 2) and, on the other, without such a vortex mask (FIG. 1), and by subtracting the sensor signal from the measurement with a vortex mask from the one without such a mask, and determining the presence of a source of coherent radiation if the differential signal exceeds a predetermined threshold value. The invention also comprises a device using the method.