Abstract: An improved rolling bearing is proposed which has a longer life under heavy load and under lubrication with oil containing foreign matters. Its bearing rings and rolling elements are made of carburized steel having an oxygen content of 15 PPM or less and have a deeper surface hardened layer and a higher core hardness. It has a longer life even under lubrication with oil containing foreign matters.

Abstract: A controlled radial magnetic bearing device which has an X-axis electromagnet and a Y-axis electromagnet provided on the X-axis and Y-axis perpendicular to each other in a plane normal to the axis of a rotary shaft, X-axis and Y-axis position sensors for detecting any displacement of the rotary shaft from its reference position, and X-axis and Y-axis control circuits for feeding the outputs of said position sensors back to the electromagnets to control them.

Abstract: A tripod type homokinetic universal joint which comprises an outer member, a tripod member, and bearing assemblies interposed between the outer member and the tripod member. Each bearing assembly has a plurality of rows of rollers adapted to roll on rolling guide surfaces on track grooves formed in the inner wall of the outer member. The rolling guide surface is defined by side faces of the track groove and near-corner portions of the base of the track groove. The side faces are so oblique that the track groove will be narrowed toward its inlet. Whereby the rollers cannot get off the rolling guide surface even if no shoulders are formed on the side faces of the track groove.

Abstract: A method of machining tapered roller bearing inner rings, wherein after the inner ring raceway groove 14 has been finish-ground, the inner ring small end face 13 and cone back face rib surface 12 are simultaneously finish-ground. In the manufacture of double row tapered roller bearings, in order to ensure that the assembly clearance which is produced during assembly of double row tapered roller bearings is always maintained constant, the method is intended to finish the raceway groove diameter to a predetermined dimension on the basis of the small end face 13, even if there is a variation in the diameter of the raceway groove 14 of each tapered roller bearing.

Abstract: A method of splitting bearing rings in a direction obliquely crossing their axes. This method comprises forming a notch of substantially V-shaped cross-section in the inner or outer peripheral surface of a bearing ring obliquely or in a V-direction, or forming a notch of substantially V-shaped cross-section in an end surface of a bearing ring at a predetermined angle with respect to the surface, heat-treating the bearing ring, and exerting wedge stress along the notch by a wedge type press-breaking tool.

Abstract: A method of manufacturing bearing assembly for the driven wheels of automobiles comprises the steps of grinding the outer peripheral raceway surface 5, cylindrical seat 6 and shoulder surface 9 of the outer joint member of a constant velocity joint simultaneously by a grinding wheel 21, grinding the outer peripheral raceway surface 11 of an inner annular member and its end surface abutting against the shoulder surface 9 simultaneously by a grinding wheel, and fitting the inner annular member C on the cylindrical seat 6 of the outer joint member B until its end surface 10 abuts against the shoulder surface 9 of the outer joint member B. The method eliminates the influences on the internal bearing clearance of the outer peripheral raceway surfaces 5 and 11 of the outer joint member B and inner annular member C.

Abstract: An air/fuel ratio compensating device is provided for association with an internal combustion engine having a fuel control valve, air suction pipe means and pedal accelerator means, the compensating device including an area flow metal system made up of a flow detection valve positioned upstream in the air suction pipe means and operatively associated with the fuel control valve, a flow control valve positioned downstream in the air suction pipe means in series with the flow detection valve and being operatively connected to the accelerator pedal means, the area flow meter system enabling the difference in pressure existing on opposite sides of the flow detection valve to be maintained at a predetermined value to insure that the amount of air flow is proportional to the opening area of the flow detection valve thus permitting a determination of the amount of air flow on the basis of the opened area of the flow detection valve, a feedback control mechanism for controlling the area control flow meter and includi

Abstract: A fuel feed system adapted to maintain at a constant value the pressure difference across a fuel measuring gate disposed in a fuel feed passage and control the area of opening of the fuel measuring gate in connection with the amount of air being sucked into an internal combustion engine so as to continuously measure the fuel, the measured fuel being concentratedly injected at a positive pressure into the suction pipe. The system comprises an accelerator pump interlocked to a throttle valve for injecting fuel at a positive pressure into the suction pipe during acceleration. The accelerator pump is fed with fuel sucked up from the return pipe of a pressure regulator which feeds the fuel measuring gate with fuel at a predetermined pressure.

Abstract: A process for producing a heat-resistant and moisture-resistant polyborometallosiloxane, which comprises adding a metal compound and a compound capable of easily forming a complex with the metal compound to an organoborosiloxane, the metal in said metal compound being at least one member of the group consisting of Ti, Zr, V, P, Al, Fe, Cr, Co, Ni, Ge, Sn, As, Mg, Pb and Sb; and heating the resulting mixture to a temperature of 550.degree. C. or lower to bond the metal atom to the silicon atom and/or the boron atom through an oxygen atom.

Abstract: A process for producing a heat-resistant compound, which comprises adding a diamine to an organic solvent-soluble metallosiloxane compound whose main chain consists of siloxane bonds --Si--O-- and metalloxane bonds --M--O-- wherein M represents at least one element selected from the group consisting of Ti, Zr, V, P, Al, Fe, Cr, Co, Ni, Ge, Sn, As, Mg, Pb and Sb, and heating the mixture to 50.degree. to 450.degree. C. in the presence or absence of an organic solvent.

Abstract: A gas flow measuring mechanism having a feedback control mechanism comprising a flow detection valve and a flow control valve which are in series with each other and placed in a channel, an area flowmeter for keeping constant the difference in the pressures existing on opposite sides of said flow detection valve and determining the amount of incoming air by the opening area of the flow detection valve, a pressure-sensitive amplifier mechanism for sensing the deviation of the difference in the pressures existing on opposite sides of the flow detection valve from a set pressure difference on the basis of the displacement of a pressure setting diaphragm, and a valve opening mechanism for controlling the opening and closing of the flow detection valve, wherein a bellows enclosing a gas at a reference temperature and under a reference pressure and having an effective area equal to (effective area of pressure difference setting diaphragm).times.

Abstract: There is disclosed a fuel injection valve for internal combustion engines, which is used in combination with a fuel injection device for intermittent injection of fuel and which comprises a main body having a passageway extending between a fuel inlet and a fuel outlet, a valve member which cooperates with a valve seat disposed in the outlet and which is movable between a closed position and a fully open position in response to the pressure of the fuel fed into the passageway, the valve member being made up of a shaft member and a valve head, and is manufactured in such a way that a valve head made of a steel ball is welded by an instantaneous current passage welding process to one end of the shaft member and that the steel ball is cut perpendicularly to the axis on a smaller circle toward the shaft member than the equator of the steel ball so as to form an edge where the fuel jet flares.

Abstract: A false-twist spindle friction disc comprises an annular rotor member whose lateral surfaces are machined to form coupling means and which is made of a highly rigid, centrifugal-force-resistant, high melting point material, and a support base made of a thermoplastic synthetic resin surrounding the annular rotor member while leaving the outer peripheral portion of the latter exposed. With the annular rotor member used as a core, the synthetic resin support base is formed by injection molding so as to unit them together. The presence of the coupling means formed in the lateral surfaces of the annular rotor member adds to the firmness with which the annular rotor member and the support base are united together.

Abstract: A pendulum arm type high sensitivity self-aligning weighting arm includes a press assembly for pressing a driven body consisting of a roller body against a driving body such as a roller body or a belt body, wherein one end of the press assembly which has the function of holding and pressing the driven body and which provides a fulcrum for the weighting arm is supported in such a manner as to be capable of executing three motions, pitching, yawing and rolling, that is, it is supported in a pivot fashion, while the other end holds a rotatable roll shaft on the driven body side. The weighting arm is characterized in that a rolling-contact bearing element is interposed in a region of contact between the press assembly using a compression spring, compressed air or other fluid pressure for pressing the weighting arm, and the weighting arm through a cap.

Abstract: A fuel flow rate measuring device comprising a control rod axially movable in proportion to the rate of flow of air flowing through a suction pipe, a ball disposed in a taper bore and adapted to be moved in the taper bore by the control rod, the taper bore and the ball cooperating with each other to define a clearance which is variable in proportion to the rate of flow of the air, and a pressure regulator provided between a fluid inlet and outlet for keeping constant the fluid pressure difference across the clearance defined by the taper bore and ball.

Abstract: A fuel injection device is disposed in a fuel supply passageway and adapted to control the amount of injection by controlling the opening time and/or opening area of a gate controlled in connection with engine rpm and the amount of suction air. The difference between the fuel supply pressure and the negative pressure in a suction pipe is maintained constant by a pressure regulator. The device contains a mechanism for compensating fuel supply pressure according to fuel temperature.

Abstract: The present invention relates to fuel injection device characterized by comprising a main body having an axial cylindrical bore, a fuel supply port, a plurality of fuel metering ports, and a plurality of fuel distributing ports communicating with said fuel metering ports; a rotor having an inlet port communicating with said fuel supply port in said main body, a single metering port associated with said metering ports in said main body, and a hole communicating with said two ports; means for driving said rotor for rotation in synchronism with the rotation of an engine; control means for axially sliding said rotor in unique association with the amount of suction air; and fuel supply means for supplying fuel to the fuel supply port in the main body through a pressure regulating valve, the arrangement being such that the length of time for communication between each metering port of the main body and the metering port of the rotor is controlled in connection with the r.p.m.

Abstract: An air/fuel ratio compensating device is provided for association with an internal combustion engine having a fuel control valve, air suction pipe means and pedal accelerator means, the compensating device including an area flow metal system made up of a flow detection valve positioned upstream in the air suction pipe means and operatively associated with the fuel control valve, a flow control valve positioned downstream in the air suction pipe means in series with the flow detection valve and being operatively connected to the accelerator pedal means, the area flow meter system enabling the difference in pressure existing on opposite sides of the flow detection valve to be maintained at a predetermined value to insure that the amount of air flow is proportional to the opening area of the flow detection valve thus permitting a determination of the amount of air flow on the basis of the opened area of the flow detection valve, a feedback control mechanism for controlling the area control flow meter and includi

Abstract: A bracket tightening device for fixing a bracket or the like on a round rod or shaft. The device uses an intermediate body formed of a resilient material which is sufficiently strong within the restorable elastic limits, one end of the intermediate body being engaged at a fixed point on the bracket, the other end being engaged at a fixed point on the rod or shaft to which the bracket is to be secured. An adjusting screw is attached to the bracket and has its front end abutting against the intermediate portion of the intermediate body.

Abstract: The invention provides a method of working steel machine parts, and it relates to a composite technique consisting of machining and heat-treatment, which makes use of the fact that at temperatures in the vicinity of or above the Ms point during quench cooling, the structure of steel assumes a state of supercooled austenite or a portion thereof assumes a state of martensite transformation or beinite transformation, suitable for machining, and in such state desired machining is applied to steel machine parts, which are then cooled to room temperature for hardening. Other merits and details will be made clear.