Abstract: The device comprises in a cylindrical case (3) of an exhaust manifold (2) of an engine, a catalyst body (12) in a centre position, and means (14, 15) for adsorbing nitrogen oxides contained in the exhaust gases of the engine in a peripheral disposition around the catalyst body (12). Preferably, the catalyst body is disposed in a pipe (8) constituting an end part of an exhaust line (8a) and the adsorbing means (14, 15) is disposed in an annular space provided between the exhaust pipe (8) surrounding the catalyst body (12) and the case (3) of the manifold (2). The device permits limiting the discharges of nitrogen oxides of the exhaust gases in all the phases of operation of the engine.

Abstract: Method for welding coated sheets with a laser beam in which an energy beam is directed on a welding zone of the sheets and is adapted to drive the coating steam vapor outward. The invention is particularly applicable in the field of vehicle manufacturing.

Abstract: A device for controlling the transmission of an automotive vehicle. A transmission cable (8) is connected to the end of an arm (15), beginning at which this component is actuated in a direction perpendicular to two orthogonal secant swivel pins (6, 7) by a return-motion lever (19) pivoting on a pin (20) lying in the same plane as the two secant pins (6, 7), in such a way that the transmission component (8) is placed at a desired distance spaced apart from the operating lever (5) and in proximity to the other transmission component (9). The invention is used in the automotive industry.

Abstract: An electromagnetic valve comprising a body containing a coil for displacing a plunger core acting upon a single part comprising on the one hand a piece forming a valve member co-operating with an opening formed in a piece constituting a seat for the valve member and on the other hand a piece slidably mounted in guided relationship within the seat piece, said single part being separated from the plunger core and operable by the latter.

Abstract: The piston comprises, fixed on a rod (9), a central element constituted by a thin perforated disc (8), and two lateral elements (6, 7) in which are provided valve members (21, 22) which cooperate with seats defined by the disc (8). The piston (1) is guided in a cylinder (2) by a ring (16) carried by the lateral elements (6, 7).

Abstract: A device for automatically and selectively breaking an electric circuit, comprising an actuating member such as a steering column with which is associated a freely rotatable cam and two stops limiting the cam rotation to an angle below 90.degree. so that the cam may act on movable contact pieces positively or not in accordance with the motion of the actuating member in one direction or the other direction, the device being applicable to the operation of the blinkers of an automotive vehicle.