Showing papers by "Toyota published in 1973"

Sodium-sulfur storage battery

Abstract: A sodium-sulfur storage battery having as part of its sulfur electrode a porous current collector formed of knitted or woven carbon or graphite yarn of high elastic modulus and tensile strength so as to yield greater mobility of sodium polysulfide (Na2Sx) within the current collector Also, highly improved current collecting function is attained by virtue of use of knitted or woven yarn, and excellent corrosion resistance and high mechanical strength is attained by virtue of the use of carbon yarn of high elastic modulus and tensile strength, resulting in a storage battery having excellent discharge performance and durability

Rear seat passenger-protecting seat back structure for automotive vehicle

Abstract: A seat back structure in an automobile or the like for protecting a passenger on a rear seat, comprising a main frame board of a front seat back, an upper buffer body secured integrally to the upper part of the main frame board and projecting towards the rear seat, and a lower buffer board secured integrally to the lower part of the main frame board, said lower part having an opening. When, in case of a collision of the automobile or the like, the knees of the passenger violently collides against that part of the rear of the front seat back which corresponds to the lower buffer board, said lower buffer board undergoes a plastic deformation towards the opening, thereby to absorb the impact load of the knees. When the breast and head of the passenger violently collide against that part of the front seat back which corresponds to the upper buffer body, said upper buffer body undergoes a plastic deformation, and subsequently the main frame board undergoes a frontward plastic deformation, thereby to absorb the impact load of the breast and head.

Control system for automatic transmissions of automotive vehicles

Abstract: An hydraulic control circuit for an automotive vehicle automatic transmission includes an oil pump driven by a motor and shift valves for applying hydraulic pressures to hydraulic servos for engaging or disengaging clutches and for applying or releasing brake bands causing upshift or downshift of the transmission. The oil pump motor drive control circuit is provided with a detector for detecting traveling velocity of the vehicle, a detector for detecting the load of the vehicle engine, a range signal generator for generating a signal representative of a selected range position, a shift signal generator adapted to determine, in response to a signal from the range signal generator, a shift point and for generating a shift signal, a motor drive circuit adapted to vary the rotational speed of the motor for driving the oil pump in two stages, and a motor drive control circuit adapted to control said motor drive circuit so as to cause said motor to drive at a high speed for a time interval required for completely engaging the clutches and applying the brake bands when the upshift, downshift or shift from N or P range occur.

Control system for motor vehicle with catalytic convertor and automatic power transmission mechanism

Abstract: A control system is provided for a motor vehicle including a catalytic convertor for purifying engine exhaust gases and an automatic power transmission mechanism controlled by an oil pressure system. The control system of the invention operates in conjunction with the oil pressure control system of the automatic transmission to sense engine exhaust gas temperature and to delay upshift of the automatic transmission until a desired temperature of the engine exhaust gases is achieved.

Inflatable type occupant restraint device for automobile or the like

Abstract: An inflatable type occupant restraint device for an automobile or the like, comprising a gas bag box secured to the central part of a steering wheel, a gas bag folded up within the gas bag box, and a wheel pad sewn on the outside surface of the gas bag. The wheel pad is detachably and fittingly engaged with the gas bag box. The lower part of the gas bag communicates with a gas passage leading to a gas injection unit. In case of the collision of the automobile or the like, the gas bag is inflated without causing the wheel pad to fly off.

Impact energy absorbing apparatus for vehicle

Abstract: An impact energy absorbing apparatus including an energy absorbing bag confined within a steering wheel assembly of a vehicle and inflatable by pressurized fluid from an external pressure source when a collision occurs. The steering wheel assembly is provided at the base portion thereof with a cylindrical aperture coaxial with a steering shaft of the vehicle. The impact energy absorbing apparatus comprises a fluid discharger which includes a cylindrical discharging chamber in communication with the bag through the aperture and positioned inside the aperture with a predetermined space, whereby the bag is inflated by pressurized fluid from the pressure source through the discharger together with the air sucked along with the jet of the pressurized fluid from the space between the discharger and the aperture.

Safety device for power window

Abstract: A safety device for power windows comprising a pressure sensitive tape-like switch including a plurality of electrode plates each made of a tape-like flexible and resilient material and juxtaposed to and spaced apart from each other a distance of 1 or several millimeters, a flexible insulating protective case containing said electrode plates therein, and a window operation control circuit for stopping at least a closing motion of a window pane when external force is exerted on said pressure sensitive switch while the window pane is moving in closing motion. Said tape-like pressure sensitive switch is attached to a fixed part of a motor vehicle.

Manually operated shift assembly with restraining action for shifting to reverse

Abstract: In a manually operable shift assembly a plurality of fork shafts are arranged within a gear case and each fork shaft is axially displaceable between two different gear positions by a gearshift lever which engages a recess within the fork shaft. One of the fork shafts is axially movable between a forward gear position and a reverse gear position and the fork shaft alongside it is movable between two forward gear positions. To prevent accidental engagement in the reverse gear position when shifting into or out of its associated forward gear position a limiting or restricting action is provided which must be overcome before movement into the reverse gear position can be attained. In one embodiment, the restricting action is provided between a plate mounted on the gearshift lever and a spring biased member arranged within the gear case. In another embodiment the limiting action is provided by spring biased pins located in the recess in the fork shaft. Additionally, the shifting movement can be effected by means of an intermediate rod and lever assembly disposed between the gearshift lever and the fork shaft with the restricting action afforded between the lever on the intermediate rod and a spring biased pin positioned in the gear case at a location spaced from the fork shaft.

Hybrid electric power vehicle

Abstract: In the hybrid electric power vehicle disclosed, a generator driven by a heat engine turns a motor which moves the vehicle. A main circuit controls the motor with power from the generator. The main circuit includes a first thyristor or relay contact for connecting the main circuit and the battery in series with each other or in parallel with each other and a commutation circuit that operates as a chopper. A second thyristor provides the energy from the generator to the motor in the form of pulses. A switch-over circuit opens the relay contact on the basis of the relationship between the degree to which the accelerator pedal is depressed and the motor speed so as to connect the main battery and the generator in series. An output ratio control circuit turns the two thyristors on so that the generator and main battery outputs are supplied to the motor together. The output of the battery is varied by the first thyristor in response to the degree to which the accelerator pedal is depressed.

Control system for automatic transmissions

Abstract: The disclosed control system actuates predetermined combinations of hydraulic valves which establish the desired gear ratios in a four-forward one-reverse speed transmission of a vehicle. In the control system, a selector selects the desired operating condition, such as drive, reverse, etc., of the transmission. A first sensor arrangement senses the speed of the vehicle and produces corresponding speed signals. A second sensor arrangement responds to the selector and produces operating signals corresponding to the selected conditions. A logic system responds to the signals and, on the basis of the speed and selected conditions, produces electrical indications which represent those valves that must be energized to establish the particular gear ratios that are necessary for operating in the selected conditions. Thus, for example, when the drive condition has been selected, the logic system determines which gear ratio is desired for the particular speed and produces indications selecting the particular valves to be actuated. Driver means then actuate the valves to obtain the resulting gear ratio. The logic system also responds to the extent to which the throttle is opened.

Internal combustion engine with a supercharger

Abstract: An internal combustion engine provided with a supercharging system in which each cylinder head of the engine cylinders is provided with a valve controlled subordinate port connected to a pressurized intake air supply source, and valve actuating means actuates each valve of the subordinate inlet ports shortly before the piston within each cylinder comes into a compression stroke thereof so that the pressurized air flowing into the cylinder agitates and attenuates the fuel mixture sucked from the valve controlled inlet port.

Process for preparing hollow balls of silicon carbide and product formed thereby

Abstract: A process for preparing hollow balls of silicon carbide, in which the surfaces of hollow balls of carbon are covered with particles of silicon or a silicon-containing composition, and the covered bodies are then heated at a temperature between 1100*C to 1200*C in a non-oxidizing atmosphere.

Output controlling method and device for internal combustion engines

Abstract: A method of and a device for controlling the output of an internal combustion engine, in which a mixture in an amount corresponding to the amount required for the full load operation of the engine is caused to flow into each cylinder in the suction stroke, even in the case of partial load operation, and, in the compression stroke, the amount of mixture required for the particular load of the engine is remained in the cylinder and the remaining part thereof is caused to flow back into the suction system from the cylinder.

Wear and seizure resistant aluminum alloy piston

Abstract: An aluminum alloy piston for an internal combustion engine, which has been made wear and seizure resistant by forming an adherent coating on at least the skirt of said piston, by applying thereto an iron-carbon powder containing less than 0.3% by weight of C, the balance being substantially all iron. A film of manganese phosphate may be subsequently applied to said skirt.

Method of making a high-strength heat-insulating casting

Abstract: A method of producing a high-strength heat-insulating casting consisting of a flexible ceramic molded liner product onto which a metallic article has been cast from molten metal, after which said liner has been impregnated with a heat-resistant binder.

Adjusting device for the reclining seat of automotive vehicles

Abstract: A reclining seat adjuster embodied by the present invention, with which the seat back of the front seat can be prevented from being flung forwardly by the engagement between a tooth portion of a ratchet member and a pawl of an engagement piece even when an occupant on the rear seat might collide with the seat back of the front seat as in case of accident. The forward flinging of the seat back can be prevented by a first holding mechanism and a second holding mechanism even when the aforementioned meshing in the reclining adjuster is lost due to an extensive shock. The first holding mechanism is constituted with a stop face formed on the ratchet and a stop face of the pawl or engagement piece. The second holding mechanism is intended to function when the pawl of the engagement piece has been broken. It comprises the stop face of the above mentioned ratchet member and a block mounted on a lower bracket.

Automatic seat belt applying device

Abstract: The seat belt applying device comprises a shoulder belt drive assembly for confining the shoulders of an occupant and a lap belt drive assembly for confining the waist of the occupant. Each assembly has a guide rail which guides and reciprocates a belt and a wire which is set in place through the guide rail. The wire is driven by a drive means connected with an electric circuit comprising a door switch which is turned on or off by the operation of a door lock device and limit switches which are operated when they come in contact with a belt hanger, thus confining the occupant automatically when the door is closed.

Resiliently mounted gas bearing device

Abstract: A dynamic pressure gas bearing device adapted to provide a floating support for a shaft rotating at a high speed and comprising a plurality of bearing pads each carried on a pivot and encircling the shaft. Each bearing pad comprises a relatively thin bearing shell having a part-cylindrical shape and a curved inner surface encircling the shaft and substantially complementary to the peripheral surface thereof, and a member made of an elastic material and associated with the bearing shell to substantially enclose the outer surface of the bearing shell and hold the bearing shell resiliently against the pivot.

Vehicle collision anticipating device

Abstract: An improvement of a vehicle collision anticipating device using transmitted and reflected frequency modulated continuous waves is provided. A low frequency wave is produced by mixing a part of a transmitted wave and a reflected wave from an object. The low frequency wave and at least one Doppler signal obtained from the low frequency wave are signal processed so as to generate signals. A distance between the vehicle and object is detected. An intensity of said Doppler signal is detected. A collision of the object against the vehicle is anticipated by detecting the object entering a predetermined distance range in front of the vehicle and a predetermined minimum intensity range determined by the positions and angles of the transmitting and receiving antennas.

Dual hydraulic braking system

Abstract: A hydraulic brake system comprises two separate hydraulic circuits, one for the front wheels and the other for the rear wheels of an automotive vehicle. Both circuits are connected hydraulically to a master cylinder, and one of the hydraulic circuits contains a control valve assembly for varying the pressure of the hydraulic brake fluid in that circuit. Balance piston means, subjected to the pressure of the master cylinder and the pressure in the other of the two circuits, are provided in operative engagement with the control valve assembly for maintaining the control valve assembly in the inoperative condition when a failure occurs in the circuit connected to the balance piston means. As a result, the circuit containing the valve assembly operates at the pressure supplied from the master cylinder.

Supporting apparatus for an upper bed deck of a mobile home vehicle

Abstract: In a mobile home vehicle means are provided wherein an upper bed deck can be rotated toward a side wall, engaged with rails extending along said side wall and readily moved into storage position against the ceiling wall. A second upper bed deck may be hinged so that it can be readily rotated into storage position against the opposite side wall, or alternatively, can also be moved along rails to storage position along the ceiling wall.

Fiber impregnated reinforced catalyst carrier and a process for the production thereof

Abstract: A fiber-impregnated reinforced catalyst carrier and a process for the production thereof, which process comprises mixing ceramic fibers to pulverulent alumina, moulding the mixture to the desired shape under addition of water and a suitable organic solvent, curing the moulded product for one hour so that the moisture may not be removed therefrom, and drying and calcining the moulded and cured product.

Damper mechanism for hydrostatic transmission

Abstract: A hydrostatic transmission comprising an input shaft, an output shaft, a differential gear set, two pump-motors hydraulically connected to each other by a pair of hydraulic circuits, and being selectively associated with the input shaft, the output shaft and the differential gear set, and a hydraulic damper mechanism arranged between the pair of hydraulic circuits.

Heat insulating castings

Abstract: The present invention relates to heat insulating castings of triple structure consisting of heat and corrosion resistant metal, heat insulating refractory material, and cast metal. The invention is characterized in that heat and corrosion resistant metal sheet is covered with heat insulating refractory material and the thus formed assembly is enveloped with cast metal. Fringe areas are provided at the ends of the heat and corrosion resistant metal and these fringes are enveloped with cast metal.

Method and device for anticipating a collision

Abstract: A method and device for anticipating vehicle collisions are provided. The wave obtained by mixing the reflected wave from an object with a portion of the frequency-modulated transmitted wave is separated into Doppler signal component, a fundamental wave component and harmonic components. A time interval between a zero-crossing point of one of two components, which are selected from said components and different in phase, and a point at which said two components are equal in intensity is measured thereby detecting accurately a margin time before a collision takes place and anticipating a correct collision of the vehicle against the object. The relative velocity of the object with respect to the vehicle is detected from the Doppler signal component. The level of the reflected wave from the object is detected. The approaching and approaching angle of the object with respect to the vehicle are detected.

Exhaust gas purifying system for motor vehicles

Abstract: An exhaust gas purifying system for motor vehicles includes a flow control valve which is operable in response to a warmup condition, acceleration condition, or other operating condition of the engine to supply secondary air selectively to either reduction treatment means or oxidation treatment means which are installed in the exhaust system for treating the exhaust gases.

Bearing system for gas turbine engine

Abstract: A bearing system for use in a gas turbine engine includes a hermetically isolated bearing chamber formed in the vicinity of a high temperature portion of the main shaft of the engine. A dynamic pressure type gas bearing mounted in the bearing chamber frictionlessly supports the main shaft without lubricant when air is introduced into the bearing chamber from an air passage communicating the bearing chamber with the compressor of the turbine engine. Means for discharging air from the bearing chamber includes means forming a labyrinthine outlet flow path operating to regulate the flow rate of the discharged air.

Ignition plug with auxiliary electrode

Abstract: An ignition plug having a center electrode, an insulator surrounding the center electrode, and a metal plug surrounding the insulator and having a ground electrode and opposing the center electrode; further, the plug comprises an auxiliary ground electrode provided with an anti-fouling gap against the insulator surrounding the center electrode at the tip end of the metal plug.

Device for detecting and indicating quantity of engine oil

Abstract: A device for detecting and indicating the quantity of engine oil in an oil pan of an engine comprising a detecting and indicating circuit including a switching transistor and a indicate element, a first detector applying an output to the circuit when the oil level is stabilized, and a second detector applying an output to the circuit when the oil level is lowered to less than a predetermined level so that the switching transistor is turned on to energize the indicate element in response to the simultaneous application of the outputs of the first and second detectors to the detecting and indicating circuit.