Abstract: A servomotor composed of a servovalve controlling a hydraulic drum motor is disclosed. A housing is enclosed on the side of the inclined cylinder head by a cover serving as a bearing for the motor shaft, and on the side of the distribution ports by an enclosing plate serving as a second bearing for said shaft. The enclosing plate, having an essentially parallelopiped shape, includes two longitudinal boreholes disposed in parallel in a plane parallel to the plane of the plate, with each of said boreholes joining together a borehole perpendicular to the plate and opening into the use opening of the servovalve fastened to one of the surfaces of the plate, and another borehole perpendicular to the plate and opening into one of said distribution ports. The plate also includes at least one transversal borehole joining together the two longitudinal boreholes and containing two-way safety valves or their equivalent.

Abstract: A system for use in a motor vehicle, made up of a group of sensors such as accelerometers, a microprocessor, and a group of passenger-safety devices. The sensors' inform the microprocessor of the levels of acceleration at different points in the vehicle. The microprocessor processes this information, checks the sensors' functioning, the power source and the safety devices. In the case of a strong shock, the microprocessor triggers the safety devices suited to the particular situation: electromagnetic door-openers, safety belts with pyrotechnic tightening action, inflatable air bags, and loosening devices for safety belts.

Abstract: A polyvalent suspension balance for the assembly lines of manufactured goods, especially motor vehicles, involving at least one overhead device for coupling to an aerial conveyer drive is disclosed. The suspension balance consists of two vertical curved arms, shaped roughly like a wide-open C, each of which separately connects an overhead coupling piece to at least one lower and separate anchoring member for the substructure of the product to be assembled. The said curved arms are articulated about a more or less vertical axis which has great freedom of movement, thereby making it possible to gain easy access to all of the products during all stages of their assembly. Application is to assembly lines for relatively bulky and complex manufactured goods, especially to the production lines of motor vehicles.

Abstract: The construction of steel-concrete railroad ties onto which rails are fixed is disclosed. The ties are composed of a metal saddle for fastening to the rail, comprising a tie-plate extending over a part of the upper surface of the tie and forming the zone for attachment and support of the rail. The tie-plate further extends into the tie through ribs sealed in the concrete of the tie and constitutes at least part of its reinforcement.

Abstract: A mechanical connection between the accelerator pedal and the carburetor of an automobile which comprises, in particular, a control block controlled by an electronic computer, an epicyclic train controlled by a motorized reduction gear, a recopy potentiometer, a blade turning about the axis of symmetry of the epicyclic train and an electromagnet for blocking the accelerator pedal in a position corresponding to a friction point.

Abstract: The control device comprises a moving slide 25 acted on by a return spring 27 and capable of uncovering an orifice 31 allowing hydraulic fluid to be fed to a release chamber 32 moving the control piston 17 removing the "bridging" between the input impeller 2 and the output turbine 10 of the converter 1. The "bridging" is actuated by an electrohydraulic transducer 43 controlled by an electronic device 49 in accordance with the input and output speeds sensed by sensors 46 and 48."Bridging" of the converter 1 is thus achieved for all the transmission ratios as well as "debridging" on each change from one ratio to another.

Abstract: Internal combustion engine piston of the composite type, having a steel upper portion surmounting an aluminum lower portion in which the piston ring grooves are provided.The lower portion (2) comprises a concentric circular cavity (3), open at the top and recessed from the ring grooves (5), said cavity being covered by an annular groove (7) in the lower surface of the steel upper portion (1) to form a dead space.

Abstract: An electromagnetic coil 29 exerts an attractive force on a movable plate 30 of magnetic material, within which is mounted a ball 32 of non-magnetic material blocking the end of a passage 33 for the hydraulic fluid. The apparatus also comprises electronic means for supplying the coil 29 by means of a pulsed unidirectional current, the mark/space ratio and mean value of which are subject to control by an operating magnitude represented by an electric control signal. The apparatus can be utilized as a hydraulic potentiometer for the determination of a control pressure proportional to an electric control signal in a hydraulic control circuit of an automatic transmission of industrial vehicles.

Abstract: An adjustable back folding seat is disclosed. A connecting rod from the back to the seat carries the axis of folding of the back, and another rod carries a bolt for immobilization of the back in use position. A bar for connecting rods ensures the longitudinal adjustment of the back with respect to the seat.

Abstract: A spark coil control device for an internal combustion engine with several cylinders, including a target with a given number of protrusions distributed regularly around its periphery which is rotating with the crankshaft, at least one fixed-position primary element associated with the target, an ignition coil, a rotating spark distributor for inducing explosions within the various cylinders of the engine is succession by the intermediary of the associated sparkplugs, a stage for processing of the data signal retrieved by the position primary element which inter alia provides a synchronization signal and a speed of rotation signal, an electronic ignition advance calculator which at a first output provides a gross numerical value for ignition advance angle and, at a second output, a gross numerical value for the angle of conduction of the coil, and a power stage for commanding the ignition coil.

Abstract: An angle of advance correction signal generator responsive to the presence of ping signals produced in a controlled ignition internal combustion heat engine of the type in which a pre-ping threshhold and a ping threshhold is determined and a pre-ping signal and a ping signal is produced in the event that a pre-pinging or a pinging condition is detected exceeding respective of said threshholds, wherein said pre-ping signal and said ping signal are produced for each cylinder of the engine taken successively in predetermined order. The generator includes a multiplexor for applying pre-ping and ping signals to respective processing circuits provided for respective cylinders. In the processing circuits predetermined numerical values are loaded into respective pre-ping and ping numerical counters, which are then decremented upon the occurrence of predetermined multiples of engine rotations.

Abstract: A device for measuring the amount of oxygen in combustion gas including succesively, a channel bordered by two plates between which exists a magnetic field, a central electrode divided in two, longitudinally, a gas discharge path, and finally a mechanism for measuring the current or ionization potential in each of the paths. This device is, accordingly, applicable to the automobile industry and automation and regulation of the operation of boilers of all kinds.

Abstract: Variable-play take-up joint, in particular for an automobile is disclosed. The joint is placed between the support element and the part to be mounted, said part being affixed along a plane different from the joint plane. The joint includes elastic play take-up tongues which push the joint against the support element, and a peripheral rim on three of its sides.

Abstract: A gasket seal for the passage of a sliding rod in a guide bushing, made of plastic material and includes two serial, coaxial, staged, integral rotating sections, of which one fits over the end of the guide bushing and the second, of smaller diameter, forms a sliding seal for the sliding rod. The connection element between these two sections includes an extension of the coupling section, connected to the sliding section through a radial flange situated at the end of the sliding section, opposite the coupling section, with said connecting extension providing a certain degree of alignment flexibility between the two aforementioned sections.

Abstract: This transmission differential gear of the type comprising a cage enclosing a pair of driven bevel sun gears and a plurality of sun gear driving planet pinions mounted for loose rotation on pins fitted in corresponding bores formed through the cage walls, comprises an annular member encircling the cage and adapted to partially close the outer ends of these bores. The differential gear is intended more particularly for road vehicles.

Abstract: A machine tool has a rotating head provided with a radially movable carriage. Transferrable tool holders are clamped to the carriage of the head by a releasable clamping mechanism. A plurality of tool holders are held on an indexable drum, the rotational axis of which lies perpendicular to the axis of rotation of the head. The tool holders are slidably transferred from the drum to the carriage of the head and vice versa by a changer which has a transfer rod and a mechanism for actuating the clamping mechanism.

Abstract: An electromechanical arrangement for automatic return of an electronic blinker located on a steering column of a motor vehicle includes a movable arm carrying a magnet at its free end and slaved at its other end by the intermediary of a roller to the rotation of the steering column of the motor vehicle. Reed ampulses disposed in fixed positions permit detection of predetermined values of angles of rotation of the steering column.

Abstract: A pseudo-resilient bumper or shield attachment for attaching a bumper or shield to a vehicle is disclosed. The attachment is made up of a vertically extending elastically resilient counter-fitting having one end attached to the chassis of the vehicle and another end to which an inelastically deformable energy absorbing block is attached. The energy absorbing block is attached between the vertically extending counter-fitting and the bumper or shield, and includes collapsible energy absorbing thin walled partitions extending perpendicular to the resilient counter-fitting.

Abstract: A synchronization and clutch control fork for a gear box. The fork has notched outer lateral surfaces. Two friction shoes are mounted on the two arms of the fork. Each shoe comprises two lugs inside its lateral flanks. The lugs are snap fit into two notches in the outer lateral surfaces of the arms of the fork. The two arms of the fork are intended to come into contact with the periphery of a driving gear.

Abstract: The invention concerns a device for locking a swiveling window in a closed or partially open position. The device includes a rod (4) articulated (i) so as to slide within a handle or control lever (1) mounted so as to pivot on a rest (2), and (ii) to a yoke (6) mounted with a certain degree of rotation in a base (8) affixed to the window (9), and a mechanism for locking/unlocking the lever in the closed or partially open positions of window (9).