Abstract: The device comprises a belt portion passing round a support member carried by an arm which is pivotally mounted on a support located on the side of the seat opposed to the adjacent door of the vehicle. The arm is movable to a roughly vertical clearing position when the door is open. The arm is connected by a cable to a lever which is pivotally mounted on a lateral part of the body of the vehicle and is operatively connected to the door.

Abstract: The invention relates to a transmission joint with bellows-type elastomer dust-guard comprising an inner element rigid with a first shaft and drivingly engaged for rotation with an outer element rigid with a second shaft, the bellows dust-guard comprising end collars adapted to be fastened by clamping the one to the outer element and the other to the first joint shaft. According to the invention, the inner space of the joint and dust-guard assembly is adapted to be connected to the surrounding atmosphere by means of a split resilient ring interposed between the first shaft and the corresponding end collar, and so shaped as to permit the passage of air along this shaft in the clamped collar condition.

Abstract: A DC electric motor, intended to be supplied with a chopped current is arranged so that the bend of the representative curve of the magnetic flux with respect to the ampere-turns has its origin j situated, approximately, in the middle of the interval of use of the motor, and the radial dimension of the air-gap is sufficiently large for the flux increase, beyond the origin of the bend, with respect to the ampere-turns, to have a slope at least equal to substantially a third of the slope of the linear part B, which precedes the bend.

Abstract: The device regulates the flow of exhaust gas reintroduced in the induction pipe in accordance with the conditions of utilization of the engine. It consists mainly in modifying a depression case the movable wall of which is connected by a cable to the closure member regulating the amount of gas re-cycled. This wall has an opening with which cooperates a valve subjected to the opposed actions of a spring which tends to apply it against its seat and a rod actuated by the butterfly valve member placed in the induction pipe. In this way there is provided a control which is independent of the characteristics of the various springs and is therefore more precise.

Abstract: The engine comprises, for each of its cylinders, an auxiliary piston provided with a piston rod. The piston is movable in a cavity which is formed in the cylinder head and opens into the combustion chamber. The cavity defines with the auxiliary piston an annular chamber around the piston rod. A liquid under pressure is supplied to the annular chamber by way of a check-valve. The rod has an axial bore in which is slidable a slide valve member whose position is under the control of a parameter representing the conditions of operation of the engine. The slide valve member cooperates with at least one escape port formed across the hollow rod to constitute a liquid discharge path for the annular chamber.

Abstract: This invention relates to a control unit for a vehicle having a steering wheel and is constituted by a box provided with vehicle accessory control and checking means. The control members several types of manually operable switches arranged and disposed for operation by a driver while his hands remain on the steering wheel, the switches being recognizable by touch.

Abstract: Transmission mechanism located between a driving shaft and a driven shaft and comprising a hydrokinetic coupling device and a device for reversing the rotation direction of the driven shaft.The hydrokinetic device comprises a driving wheel and a driven wheel, whereby the latter can be coupled to the driven shaft by means of a reversing device constituted by a planet gear, comprising planet wheels and bevel gears, located substantially in the center of the hydrokinetic device via hydraulically controlled coupling means and located on either side of the hydrokinetic device, whereby the driving and driven wheels, reversing device and coupling means are all located in a fluid-filled enclosure.An interesting application of the invention is to the automobile industry.

Abstract: An in-line, two-cylinder engine comprises a crankshaft having crankpins at a 360.degree. setting and balancing means comprising a first counterweight rotating oppositely to, but at the same speed as, the crankshaft, such counterweight being so set that its center of gravity is remote from the crankpins when the pistons are at top dead center, such first counterweight being of a size and design such as to develop a centrifugal force whose amplitude is half the maximum amplitude of the reciprocating rectilinear inertia forces of the engine.

Abstract: A device for automatically controlling a speed restriction from information coming from outside the vehicle, comprising means for analysing and decoding the information and control means for maintaining the speed of the vehicle at a value equal to that of the speed limit. The device comprises coding means for coding the information coming from outside; program means able to make correspond to each speed limit a voltage associated with this speed and electrical connection means between the program means and the speed control means, these electrical connection means being responsive to the coding of the speed limit and able to select the voltage corresponding to the coded speed.

Abstract: The device comprises a float which is guided by a retaining device and cooperates with a switch located adjacent the bottom of a fuel tank and carried by the retaining device. An elastically yieldable device interposed between a support secured to the top wall of the tank and the retaining device biases the latter against the bottom wall of the tank.

Abstract: A speed change device comprises a stack of discs alternating with friction rings, the rings being disposed in a drum with which they are rotatable, the discs being rotatable with an input shaft extending into the drum. The stack is gripped between an abutment connected to the drum and a bell-shaped member fixed to an output shaft extending into the drum. The gripping is ensured by clamping means comprising elements having complementary conjugate surfaces and resilient means disposed between one of said elements and an axial abutment movable with the drum or bell-shaped member. The elements of the clamping means comprise a screw rotatable with the output shaft but axially movable therealong and a nut co-operating with the screw, the nut being rotatable with the drum but axially movable therealong.

Abstract: In an automobile, a device for monitoring the flow and temperature of the coolant in the internal combustion engine, comprising a switch of a supply circuit for an alarm, whose mobile part is controlled by a single detector detecting both flow and temperature, disposed at one point of the cooling circuit.

Abstract: The invention relates to the transmission mechanism of an automotive vehicle.The mechanism comprises a drive shaft, an input shaft, a coupling, a reversing gear, means for applying a brake to the input shaft and means for selecting the operating condition of the reversing gear. The brake actuating means comprise a hydraulic circuit, incorporating a solenoid valve, the energizing circuit of which comprises a normally open switch and a normally closed switch. Means for closing the switch comprise a self-hold relay of which an energizing circuit incorporates contact pairs operated by the selection means.

Abstract: The invention relates to a correcting device for controlling the normal operating speed of an automotive engine with a variable speed transmission.The variable speed transmission incorporates a hydraulic control mechanism of which a movable member is connected to the actuating member of the speed reduction ratio control device, and is capable of being placed in communication selectively with a pressure fluid source and a reservoir through a distributing valve. A slide of the distributing valve is so connected that their actions oppose one another to a centrifugal governor and a resilient member connected to the acceleration control pedal of the vehicle through a pivotal lever. A movable part is connected to the speed reduction ratio control device and is disposed opposite the lever and serves as an abutment limiting the pivotal movement of the lever.

Abstract: An elastic coupling for two elements having non-uniform characteristics of rigidity, the coupling being constituted by two interfitting parts held fast by an elastic sleeve having zones weakened by free spaces made between one part and the sleeve at the ends of the coupling in zones which are symmetrical with respect to a theoretical axis of relative pivoting of the two parts. The invention finds advantageous application in the domain of automobiles.

Abstract: A speed limiter device for an automobile vehicle having a combustion engine comprising an air intake manifold provided with a throttle member manual control of the accelerator pedal type which acts on the opening of the throttle member and a connecting member between these opening devices and the throttle member. The limiter device comprises apparatus sensitive to a speed parameter of the vehicle for producing a speed signal, a comparator to compare this signal with a predetermined limit, and an amplifier for the signal supplied by the comparator. The amplifier controls a drive which is sensitive to the suction in the intake manifold and acts on the throttle member so as to keep the value of the speed parameter at the predetermined limit when the limiter device is engaged. The connecting member between the opening control and the throttle member has a substantially constant length when the limiter device is not engaged and a variable length when the limiter device is engaged.

Abstract: The method is especially suitable for two identical groups of elements, and for supplying a continuous current traction motor. The commutating means modifies the coupling of groups of elements from parallel to series and conversely, as a function of the power demanded for driving the motor. The current supply of the motor is ensured by pulses delivered by a chopper type device monitored as a function of the power demanded. The commutating means e.g. a thyristor are actuated in synchronism with the operation of the chopper type device.

Abstract: A circular discoid member is secured in a cylindrical member by means of a resilient split ring received in an annular groove formed in the internal surface of the cylindrical member. The resilient ring projects radially inwardly into engagement with an abutment zone of a peripheral surface of the circular member to retain the circular member against a biasing force applied thereto in one axial direction, while permitting displacement of the circular member in the other axial direction. A peripheral surface portion of the circular member on the opposite side of the resilient ring to the abutment zone has a diameter less than the internal diameter of the resilient ring when received in the groove and at least equal to the internal diameter of the ring when compressed for introduction into the cylindrical member.

Abstract: The present invention relates to installations for supplying the burners of boilers with an emulsion of fuel, water and if desired soluble oil, intended to ensure the elimination of 95% of the solid unburnt material in the combustion gases of boilers and hot air generators and to eliminate the liquid residues by incineration. The installation includes a reserve tank fed by an electrovalve controlled by a level-electrode provided in the tank so as to maintain a constant level of liquid, a pump, an emulsifying device and at least one burner, together with a regulating valve acting on the flow of liquid to be treated in dependence on the temperature of the mixture after its passage through the emulsifier, this valve being mounted between the pump and the emulsifier.

Abstract: An improved inertia switch having a variable threshold and operating time comprises a flywheel, a driving member, electrical contact elements carried respectively by the driving member and the flywheel and return means coupled between the driving member and the flywheel. The contact element carried by the flywheel comprises on the one hand a contact terminal integral with a support coupled by friction to the flywheel, the contact terminal co-operating with a part of the contact carried by the driving member, and on the other hand, a contact surface integral with the flywheel co-operating with a second contact part carried by the driving member. The switch is particularly applicable for detecting imminent locking of a vehicle wheel.