Abstract: A seat back reclining mechanism including a stationary bracket secured to the seat bottom and a movable bracket secured to the seat back, the stationary and movable brackets being connected together for pivotable movement about a pivot axis. The movable bracket is formed with a series of indentations formed along an arc having a center on the pivot axis. The stationary bracket has a first and second locking lever respectively carrying a first and second locking pins which alternately engage selected ones of the indentations. Each of the locking levers is so oriented that when the locking pin on the lever is engaged with the indentation, the lever is directed substantially tangentially with respect to the arc along which said indentations are formed.

Abstract: A steering lock assembly for use in an automobile comprises a cylinder lock for controlling an ignition switch assembly with a mating key inserted in the cylinder lock and a steering shaft lock operatively associated with the cylinder lock for selectively locking and unlocking an automobile steering shaft. The cylinder lock comprises a key-operated barrel and the steering shaft lock comprises a locking member. A retaining mechanism is also provided for temporarily holding the locking member in an unlocked position unless the key inserted in the barrel is withdrawn and comprises a locking link. This locking link is operatively accommodated in an elongated chamber in a lock housing and can be held in position inside the elongated chamber by inserting it in an axial direction of the barrel.

Abstract: An air-fuel ratio control system for an automobile engine of a type having a fuel injection system wherein at least two of parameters including the engine speed, the opening of a throttle valve and the negative pressure developed inside a fuel intake passage are utilized to detect the rate of flow of incoming air to be mixed with an injected mist of fuel to form a combustible mixture. The fuel injection system includes a fuel adjusting device so designed as to provide, when the engine operates within a particular operating region, the combustible mixture of an air-fuel mixing ratio lower than that to be supplied to the engine when the latter operates within the other operating region than the particular operating region.

Abstract: An improved joint construction of a pipeline, which is provided with inclined bearing surfaces of fastening members, with respect to the centerline or axis of the pipeline, and arranged to improve the working efficiency in the coupling, ensure the working safety, and also decrease cost required for coupling tools.

Abstract: An air-fuel ratio control system for an automobile engine including a source of combustible air-fuel mixture on an intake passage and an exhaust gas purifying unit on an exhaust passage includes a composition sensor for generating an output signal indicative of the concentration of a particular component of exhaust gases flowing through the exhaust passage, a control unit for generating a control signal in dependence on the output signal, a pressure sensor for generating a pressure signal indicative of the pressure inside the intake passage, and an actuator operable in response to the control signal to adjust the air-fuel mixing ratio to a predetermined optimum value. The control unit is so designed to fix the duty ratio of the control signal at a mean value of the highest and lowest values of the duty ratio of the previous control signal if it has attained a generally identical value two or more times consecutively.

Abstract: An automobile body of a front-engine-front-drive type has an engine located in the engine compartment with the crankshaft directed transversely. The frame assembly for supporting the power unit comprising the engine and the transmission device is constituted by a front and rear sections. The rear section is secured to the body and the front section is removably connected at the front end with the body and at the rear end with the rear section. The power unit is mounted on the front section so that it can be removed from the body together with the front section.

Abstract: An engine exhaust gas recirculation system including a recirculation gas control valve provided in a gas recirculation passage. The gas recirculation passage is further provided with a restriction and pressure sensors for detecting the pressure drop across the restriction so that the opening of the control valve be adjusted in accordance with the engine operating conditions and with a prestored memories of optimum values of the pressure drop. The restriction is variable so that the effective opening thereof is increased as the recirculated gas flow increases.

Abstract: A power operated automobile window glass regulating mechanism comprises a motor mounted on the window glass panel and having a driving pinion or sprocket. In the door panel, there is provided a flexible plastic strap having teeth or perforations for engagement with the driving pinion or sprocket.

Abstract: Lubricating oil supply device for a rotary piston engine including an oil port opened to a working chamber at the trochoidal inner wall of the rotor housing, a bore formed radially in the rotor housing to communicate with the oil port, a plug fitted to the bore close to an end adjacent to the oil port and having a nozzle opening opposed to the wall of the bore, an oil supply conduit extending axially in the bore and opening to the bore in the vicinity of the plug, and an air passage opening the bore to the atmosphere.

Abstract: A seat back framework of one-piece construction together with a head rest support is made from a single blank of fiber-reinforced plastics. The seat back framework comprises a generally rectangular body having opposite upper and lower walls, a pair of opposite side walls and a connecting wall extending between the side walls in spaced relation to the upper wall with a support space defined therebetween. A pair of guide members for axially adjustably supporting corresponding legs forming a part of the head rest assembly together with a head rest are formed on the rectangular body within the support space.

Abstract: A rotary piston engine having a supercharging blower located in the intake passage upstream of the throttle valve. A lubricating oil supply system includes oil passages opening through oil discharge nozzles to the intake passage downstream of the throttle valve and to the rotor housing. Air passages are provided and communicating at one ends with the oil passages and opening at the other end to the intake passage between the supercharging blower and the throttle valve.

Abstract: A resinous molding for a vehicle body structure comprises a generally elongated body made of synthetic resin and having a cavity defined therein. The cavity extending inwardly from one surface of the elongated body and generally over the length of the molding. It also comprises a plurality of generally rectangular thin-walled flexible ribs integrally formed with the elongated body and protruding within the cavity from the bottom of the cavity with the longitudinal axis of each of the flexible ribs oriented generally widthwise of the molding. One side face of each of the flexible ribs opposite to the bottom of the cavity is adapted to be bonded to an outer surface of the vehicle body structure.

Abstract: An ignition timing control system for an automobile internal combustion engine comprises knocking detecting circuitry, ignition timing control circuitry and inhibiting circuitry. The inhibiting circuitry is operable to interrupt the supply of an output signal from the detecting circuitry to the control circuitry only when the engine, which has been operated under a particular operating condition wherein the engine speed is lower than a predetermined speed value while the actual load imposed on the engine is larger than a predetermined load value, is operated under any one of operating conditions other than such particular operating conditions.

Abstract: An air-fuel ratio control system for an automobile engine of a type having a fuel injection system wherein at least two of parameters including the engine speed, the opening of a throttle valve and the negative pressure developed inside a fuel intake passage are utilized to detect the rate of flow of incoming air to be mixed with an injected mist of fuel to form a combustible mixture. The amount of fuel to be injected into the intake passage depends on the detected rate of flow of the incoming air. A composition sensor for detecting the concentration of an exhaust gas component is also provided for controlling an EGR control valve for controlling the recirculation of a portion of exhaust gases from an exhaust passage into the intake passage.

Abstract: An automobile door assembly having a door locking device wherein the door locking device can be installed only from the outside of the door outer panel.

Abstract: A glass-wool mat is produced from a sheet of glass fibers by heating the surfaces of the sheet to a temperature close to the melting point of glass so that the glass fibers in the surface area have rounded ends and are shrunk so that they are firmly entangled together. Thus, non-irritating surfaces are provided on the mat.

Abstract: An internal combustion engine has an exhaust gas recirculation system including a recirculation valve for controlling the amount of exhaust gas returned to the intake system. The position or opening of the valve is controlled to a desired position in accordance with a memory in a memory device storing desired valve positions under various combinations of the engine load and the engine speed. A device is provided for closing the recirculation valve when the actual valve position does not conform with the desired position for a predetermined time.

Abstract: An internal combustion engine has an exhaust gas recirculation system including a recirculation valve for controlling the amount of exhaust gas returned to the intake system. The position or opening of the valve is controlled to a desired position in accordance with a memory in a memory device storing desired valve positions under various combinations of the engine load and the engine speed. A device is provided for increasing the opening of the recirculation valve when the effective area of the recirculation passage is decreased due to carbon deposits.

Abstract: An automobile air-fuel control system is incorporated with an altitude compensator in order to minimize an excessive enrichment of an air-fuel mixture which would occur when the engine is operated at a high altitude under a high load operating condition. This altitude compensator is constituted by a delay circuitry operable to delay the timing at which the supply of bleed air for leaning the mixture is interrupted when the engine is operated at a high altitude under the high loaded condition.

Abstract: A windshield wiper device for automobiles including a control circuit for controlling a wiper drive motor. The control circuit has a wiper switch including an intermittent position wherein the wiper is intermittently driven. In the intermittent position of the wiper switch, the wiper is at first driven for one complete stroke. Then, after a desired time, the operator actuates a time interval setting switch whereby the wiper is thereafter driven intermittently with the desired time interval.