Showing papers by "Toyota published in 1972"

Method for producing metal dies or molds containing cooling channels by sintering powdered metals

Abstract: A sintered metal die or mold having formed therein an internal channel for conducting a heat transfer medium therethrough, and a method for producing same. The method includes the steps of disposing sintering powder, such as iron, copper, tungsten carbide or titanium carbide, in a frame or box, about a pattern made of an infiltrant metal, such as copper, lead, cobalt, nickel, iron or alloys thereof, having a lower melting point than that of the sintering powder, the pattern corresponding in configuration to that of the cavity surface of the desired channel for the heat transfer medium and being positioned within the sintering powder in the position desired for the channel, heating the powder together with the pattern to sintering temperature, whereby to sinter the powder and infiltrate the infiltrant metal forming the pattern into the powder, and cooling so as to obtain a sintered metal die or mold having an internal channel whose configuration complements that of the pattern surface.

Vehicle with apparatus for detecting potential collisions

Abstract: In a vehicle having an apparatus for detecting potential collisions, a chamber is defined by a horizontal C-shaped reinforcing plate inside the vehicle''s bumper. A horn-shaped antenna for transmitting and receiving microwaves and forming part of the detecting apparatus is mounted within the chamber, integrally with a lighting fixture. A waveguide connects the antenna to a cabinet incorporating a microwave circuit and mounted in the chamber.

Pillar for a body of a motor vehicle

Abstract: This invention relates to a pillar for a body of a motor vehicle. The pillar comprises a channel-shaped outer pillar component arranged vertically with its open side facing the inside of the room, a channel-shaped inner pillar component fitted in the outer pillar component with its open side facing the inside of the room, the outer pillar component and the inner pillar component being joined to each other to provide a pillar having a closed space therein, portions of the outer pillar component and the inner pillar component at which they are joined being disposed in the vicinity of a door frame, inner panel or other inner side portion of the room so as not to project much into the room, a protector device disposed with its open side facing the open side of the inner pillar component and its opposite edges being disposed near the portion of the inner pillar component at which it is joined to the outer pillar component, the protector device having a width greater than the width of the outer pillar component and being adapted to undergo plastic deformation when subjected to a force of impact higher than the value at which the protector means is set, and a shock absorber mechanism disposed in a space between the inner pillar component and the protector device so as to connect them together.

Revolutions measuring instrument

Abstract: An instrument for measuring the revolutions of a rotary body comprising a speed pulse generator for generating a first train of pulses including, in a unit length of time, pulses of the number proportional to the revolutions of the rotary body, a reference pulse generator for generating a second train of pulses including a certain number of pulses in a unit time, and first and second counters for counting the number of pulses appearing in the first and second pulse trains respectively during a counting cycle starting with a certain pulse in the first pulse train; wherein the counting operations of both the counters are stopped simultaneously with the appearance of the first pulse of the first pulse train immediately following the time at which the second counter has counted a predetermined number of pulses, and the number counted by the first counter is divided by the number counted by the second counter, thereby measuring the revolutions of the rotary body.

Impact energy absorbing apparatus

Abstract: Disclosed herein is an impact energy absorbing apparatus of the type which includes an inflatable bag assembly confined within the steering wheel of a vehicle. The inflatable bag assembly comprises a container rotatably mounted on the top end of a steering shaft within the steering wheel so as to be conditioned to a given position independently of steering wheel rotation by way of an eccentric load and an inflatable bag confined within the container in hermetical connection with an external pressure source. A pressure communication device for leading pressurized fluid from the pressure source into the bag comprises a conduit having one end thereof connected to the periphery of a column tube surrounding the steering shaft and the other end thereof connected to the pressure source, an annular sealing device interposed between the periphery of the shaft and the inner circumference of the column tube to hermetically connect the opening of the conduit with an axial passageway within the steering shaft, the passageway having one end thereof open into the bag and the other end thereof closed.

Heat resistant, anti-corrosive alloys for high temperature service

Abstract: The present invention relates to a heat resistant anticorrosive alloy characterized by good resistance to corrosion at high temperatures and high strength at high temperatures which is suitable as material for re-combustion-type emission gas purifiers such as thermal reactors, after-burners, more specifically to a metal alloy substantially composed of ferrite phase, its major components being:

Torque transmission device

Abstract: In a torque transmission device, an input shaft and an output shaft are disposed in axial alignment within a casing and combine with a pair of inner rings concentrically secured on the input shaft, an outer ring encircling the inner rings, and transmitting elements disposed between and in contact with the inner rings and the outer ring, to form a planetary mechanism. The transmitting elements are operatively engaged with the output shaft. By applying hydraulic pressure to the outer ring the frictional contact between the transmitting elements and the outer ring and inner rings can be varied. Therefore, a large rotating force can be transmitted at a reduced speed by the utilization of friction transmission. The inner rings are of the split type and are located on the input shaft between a pair of supporting plates. Notches are formed in the inner rings and the supporting plates and contain balls which facilitate the transmission of power between the input shaft and the transmitting elements. A servomechanism, located within the casing outwardly of the outer rings, provides the variation in the application of hydraulic pressure to the outer ring in accordance with the variation in speed or torque between the input and output shafts.

Air cleaner for automobiles

Abstract: An air cleaner for automobiles having an air cleaning filter element within an air cleaner casing is provided with a fuel receiving plate therein for catching fuel leaking out of the float chamber of the carburetor connected with the cleaner in such occasions that the automobile turns sideways. The fuel receiving plate is provided along the inner periphery of an air outlet of the air cleaner.

Vehicle collision anticipating method and device

Abstract: An improvement of a vehicle collision anticipating method and device using transmitted and reflected frequency-modulated continuous waves is provided. A low frequency wave is produced by mixing a part of transmitted wave and a reflected wave from the object. The low frequency wave and a Doppler signal obtained from the low frequency wave are signal processed so as to generate signals. A predetermined distance range is obtained by multiplying a time which is determined by the distance between the vehicle and object and the velocity of said object with respect to the vehicle obtained from the Doppler signal, by a relative velocity of the object with respect to the vehicle. A collision of the object against the vehicle is anticipated by detecting the object entering the predetermined distance range in front of the vehicle.

Die or mould for use in forming a rubber or plastic material

Abstract: A die or mould for use in forming a rubber or plastic material, and which includes cylindrical filters as air venting means. The filters include a plurality of linear air venting holes of a diameter of from 0.01 mm. to 0.1 mm., passing therethrough and are mounted in through-holes penetrating the die or mould body. During forming of the rubber or plastic material in the die or mould, the air trapped is vented to the exterior of the mould through the filters, and the material being moulded does not clot the air venting holes.

Process for manufacturing heat-insulated castings

Abstract: The present disclosure relates to a process for manufacturing cast pipes of the type which excel in heat-insulating characteristics and which are highly durable under high temperatures. An internal core of metallic material with high resistance to heat and corrosion is externally coated with a highly heat-insulating layer to thereby produce a double structure, and the double structure is then surrounded in molten metal to produce the casting.

Catalyzer apparatus and method for the production thereof

Abstract: A catalyzer apparatus for holding particles of a catalyzers and method for the production thereof, adapted for exhaust gas purification in an internal combustion engine. The catalyzer particles are piled upon a netty structure such as wire net and then wound into a block in the form of a roll.

Device for supplying secondary air to a gas engine intake manifold

Abstract: In a device operated in response to the pressure in the intake manifold of a gasoline engine, the interior of a housing is divided into an air chamber and a pair of vacuum compartments separated by a diaphragm. The vacuum compartments are connected by a small opening through the diaphragm. One of the vacuum compartments is connected to the intake manifold. A valve is mounted within the housing for regulating flow of atmospheric air through the air chamber to the intake manifold. The valve is connected to the diaphragm and variations in the pressure within the two compartments results in a displacement of the valve for changing the flow of secondary air into the intake manifold. In addition to the intake manifold pressure other engine conditions can be checked and used for supplying the secondary air.

Method for producing ceramics of silicon nitride

Abstract: A method for producing silicon nitride base ceramics products having high heat resistance, high abrasion resistance and low thermal expansion from the mixed powders of silicon nitride and alumina or from the mixed powders of silicon nitride, alumina and aluminum nitride. The method includes heating said mixed powders at a temperature between 1650 DEG and 2000 DEG C under a high pressure or no pressure. During the heating most of the alumina and aluminum nitride are occluded in silicon nitride and said silicon nitride base ceramics products are formed.

Fluid shock absorber

Abstract: This invention relates to a damper device. Said damper device comprises a first impact energy absorbing member formed with an orifice for a liquid fluid in a cylinder to pass therethrough when said fluid is compressed so as to attenuate an initial force of impact by the viscous resistance of the fluid passing through said orifice, a second impact energy absorbing member controlled by said first impact energy absorbing member to produce frictional resistance between an outer surface of said second impact energy absorbing member and an inner wall surface of the cylinder for further attenuating the force of impact, a third impact energy absorbing member made of a compressible material and disposed in the cylinder for continuously attenuating the force of impact by a back pressure of the fluid in the cylinder produced by said first impact energy absorbing member, and a fourth impact energy absorbing member cooperating with said first and third impact energy absorbing members for further absorbing and attenuating the residual force of impact.

Occupant protection device for motor vehicles and the like

Abstract: An occupant protection device for automotive vehicles including a honeycomb shaped structural member attached to the base of an instrument panel, a pad layer and a fancy covering. The honeycomb shaped structural member has a plurality of hollow cells surrounded by side walls having openings in the direction perpendicular to that of the action of impact force and protects the occupant by permitting the deformation of the member to absorb shock which may be caused by a secondary collision of the occupant with the instrument panel.

Device for disposal of liquid of condensation in exhaust gases

Abstract: This invention relates to a device for disposal of liquid of condensation in exhaust gases of an internal combustion engine prior to recirculation of a portion of the exhaust gases to the engine.

Exhaust gas recycling system

Abstract: An exhaust gas recycling system for an internal combustion engine having an intake system for introducing a fuel-air mixture into the engine; an exhaust system for discharging exhaust gases from the engine to the atmosphere; a recycling pipe connected to both the intake system and the exhaust system for recycling exhaust gases; and a device for modifying the volume of the recycling exhaust gases through the recycling pipe, responsive to changes in the pressure in an intake manifold of the inlet system, including a device for sensing the intake manifold pressure, the sensing device having a diaphragm chamber, a diaphragm positioned in the diaphragm chamber, an induction pipe connected to both the intake manifold and the diaphragm chamber through which the pressure in said intake manifold propagates to the diaphragm chamber, and a device for retarding the propagation of the pressure from the intake manifold to the diaphragm chamber.

Electrical fuel injection system for internal combustion engines

Abstract: An electrical fuel injection system for internal combustion engines, in which the operation of regular electromagnetic fuel injection valves is forcibly prevented so long as a starting electromagnetic fuel injection valve is in operation, whereby the engine can be started smoothly and positively without wetting the spark plug only with a readily atomizable fuel injected from the starting electromagnetic injection valve.

Method and apparatus for finishing the tooth surfaces of hypoid gears

Abstract: A hypoid gear finishing method and apparatus wherein either two hypoid pinion gears or a hypoid ring gear are formed as the tool in a specified shape, the other being rough-cut as the workpiece, the two hypoid pinion gears being opposied to each other and meshed with the hypoid ring gear, and torques in opposite directions are given to the two hypoid pinion gears to rotate these hypoid pinion gears, thereby burnishing the tooth surface of the workpiece gear.

Automatic seat belt applying device

Abstract: This invention relates to an automatic seat belt applying device. Said device comprises seat belt means adapted to confine an occupant of a seat to a back rest thereof, a spring-loaded retractor secured to a vehicle body reinforcing member, and a guide mounted at a front end of a member connected for operation in association with opening and closing of said door and loosely supporting an intermediate portion of said seat belt means so as to guide the same. Said seat belt means is connected at one end to said retractor to be wound thereon by the resilience of the spring and at at least another end to a supporter mounted at least for forward and rearward movement in an outer marginal portion of a door hingedly supported at its inner marginal portion by a vehicle body and disposed adjacent said seat.

Process for producing a catalyst

Abstract: A film of a noble metal is deposited on the surface of a carrier without substantial penetration of the carrier by immersing the carrier first in a dilute solution of a salt of the noble metal, removing the carrier and heating and drying it to produce precipitation cores of the noble metal on the surface of the carrier, and then immersing the carrier with the precipitation cores in a solution of a noble metal salt which also contains a reducing agent for the salt and a stabilizer for the solution. The film of noble metal thus produced on the surface is adherent thereto and is highly active as a catalyzer for removing pollutants from the exhaust gas of an automobile.

Wheel spin control system for automatic transmissions

Abstract: In a vehicle transmission of the type in which the torque is transmitted between the drive shaft and the driven shaft, a control system for an automatic transmission comprising a gear shift engagement unit including engaging means with hydraulic servos, a source of fluid pressure for generating fluid pressure for said hydraulic servos, shift valves adapted to distribute the fluid pressure to said hydraulic servos, driven-wheel speedresponsive signal generating means, engine torque-responsive signal generating means, vehicle speed-responsive signal generating means, shift discriminating circuits each for receiving and performing computational operations on the signals from said signal generating means, and a speed ratio discriminating circuit for receiving said driven-wheel speedresponsive signal and said vehicle speed-responsive signal to compute the slip factor of the driven wheel, whereby said shift valves are selectively controlled according to the output signals from said shift discriminating circuits and said speed ratio discriminating circuit to thereby reduce the transmission of the torque between the transmission input or drive shaft connected to the engine and the transmission output or driven shaft which connects to the driven wheels when they begin to spin at low speeds due to slippery conditions.

Engine exhaust recirculation apparatus

Abstract: An apparatus is provided for the recirculation of exhaust gases from an automobile''s engine at a constant volume comprising a flow control valve in a passage for recirculating part of the engine exhaust gases into the engine''s intake system

Method of coating by redox polymerization

Abstract: Method of coating a metallic object with a vinyl base polymerized film by immersing the metallic object in an aqueous organic solvent solution of a water insoluble vinyl monomer containing a metal ion releasing agent and a polymerization catalyst.

Shift control system for automatic transmission

Abstract: Improved shift control of the present invention is used in an engine driven vehicle having an automatic transmission. Load indicating apparatus responds to the operational load characteristics of the vehicle and produces outputs indicative of variations therein, while a responsively coupled first shift point computing apparatus effects the gear change signal for the transmission when the output indicates a certain load characteristic. A second shift point computer is responsively coupled to the load indicator and provides an output of a gradient operating circuit thereof in order to establish a gear change signal when the output of the load indicating apparatus establishes that a certain load characteristic exists which is co-relative to a gradient exceeding a selected amount.

Recirculation type exhaust gas cleaning system

Abstract: Recirculation type exhaust gas cleaning system comprising a turbine driven by the output air of an air pump and adapted to drive a blower for directing a part of the exhaust gas into an air cleaner or a carburetor provided in an engine intake system, whereby the maximum temperature in the engine cylinder is reduced and therefore the nitrogen oxide content in the exhaust gas can be decreased.

Working oil pressure control system for automatic transmission with torque converters

Abstract: A working oil pressure control system to reduce shift shock in automatic transmissions with torque converters wherein, by virtue of the fact that the torque transmitted corresponds to the slip ratio between the torque converter pump and the torque converter turbine, the working or operating oil pressure applied to the friction engaging or clutch and brake means of a gear transmission is controlled so as to decrease when the slip ratio in the torque converter increases and vice versa.

Clutch disc with friction and resilient dampers

Abstract: In a friction clutch disc having damper members for resiliently connecting a driving member and a driven member, a means for changing the friction between said two members in accordance with the relative torsional displacement between said two members.

Structural frame capable of absorbing impact energy

Abstract: A structural frame capable of absorbing impact energy comprises structural frame member of metallic material defining closed rectangular cross-section. Portion of each of the structural frame members is bent in the direction perpendicular to the longitudinal direction of the frame and energy absorption materials of metallic material with bowl-shaped projections are attached to those two opposing inner surfaces of the frame members which oppose in the direction of bending so that the bowl-shaped projection abut against each other. Upon collision, due to the resistance to plastic deformation of the bowl-shaped deformation the shape of the cross section of the structural frame may be maintained in its initial state and no abrupt decrease of blending moment takes place.