Abstract: An occupancy or vacancy indicating system comprising: one or more indicating modules for indicating occupancy or vacancy of one or more areas of a space; and a setting means for setting a status of the indication modules, the status being indicative of the occupancy or vacancy of said one or more areas, wherein the setting means is operable for setting the status of indicating modules from a remote location relative to the one or more areas by transmitting one or more signals to the indicating module sensing means for sensing an indication of occupancy or vacancy, as indicated by a user during use in the one or more areas.

Abstract: A gas generator includes a case enclosing a combustion chamber containing at least one pyrotechnic charge, a diffusion chamber, and a chamber for storing a material releasable from the chamber during combustion of the charge, to change state endothermically under the effect of gas coming from this combustion, then be evacuated via the diffusion chamber. The material is a liquid stored at atmospheric pressure. The chamber has at least one inlet opening, and a series of outlet openings. The outlet openings are arranged within a wall separating the chamber from the diffusion chamber. The charge and the combustion and diffusion chambers are dimensioned such that during combustion, at least one portion of gas flow generated by the charge opens at least the inlet opening and penetrates into the chamber provoking the escape of the material via the outlet openings, then its endothermic change in state, mainly in the diffusion chamber.

Abstract: A gas generator for a safety device for a motor vehicle, comprises at least two distinct chambers which communicate with each other through at least one opening or nozzle. A first chamber is isolated from the outside. A second chamber or “diffusion” chamber is able to receive gases generated by the combustion of a solid pyrotechnical charge placed in the first chamber, and to discharge them towards the outside. The solid charge is a mixture consisting of at least one oxidizing charge and a reducing charge, the oxygen balance of which is equilibrated. A heat generator is provided which generates sufficient heat for triggering and sustaining the combustion of the charge without any other interaction, notably of the chemical type, between the heat generator and the charge.

Abstract: A gas generator includes a case enclosing a combustion chamber containing at least one pyrotechnic charge, a diffusion chamber, and a chamber for storing a material releasable from the chamber during combustion of the charge, to change state endothermically under the effect of gas coming from this combustion, then be evacuated via the diffusion chamber. The material is a liquid stored at atmospheric pressure. The chamber has at least one inlet opening, and a series of outlet openings. The outlet openings are arranged within a wall separating the chamber from the diffusion chamber. The charge and the combustion and diffusion chambers are dimensioned such that during combustion, at least one portion of gas flow generated by the charge opens at least the inlet opening and penetrates into the chamber provoking the escape of the material via the outlet openings, then its endothermic change in state, mainly in the diffusion chamber.

Abstract: The present invention relates to a gas generator (1) for a safety device for a motor vehicle, which comprises at least two distinct chambers respectively designated as first (2) and second (3) chambers, which communicate with each other through at least one opening or nozzle, the first (2) of these chambers being isolated from the outside, the second one (3) a so-called ‘diffusion’ chamber being able to receive gases generated by the combustion of a solid pyrotechnical charge (5) placed in the first chamber (2), and to discharge them towards the outside. It is remarkable in that: said solid charge (5) is a mixture consisting of at least one oxidizing charge and a reducing charge, the oxygen balance of which is equilibrated; a heat-generating means (6) is provided which generates sufficient heat for triggering and sustaining the combustion of said charge (5), this without any other interaction, notably of the chemical type, between this means (6) and this charge (5).