Abstract: An air-fuel mixture control valve assembly for automotive vehicles comprises a valve member which is capable of controlling the opening-closing operation of an air admission passage connected to an intake manifold and a one-way disc valve which is disposed in the air admission passage to prevent the possible adverse current of a high pressure and high temperature fluid within the valve assembly, whereby the air is supplied to the intake manifold upon the sudden deceleration of the vehicle to thereby prevent possible generation of various pollutants.

Abstract: A free wheel hub mechanism made up of a body secured to a wheel, an inner race secured to an axle shaft and rotatable therewith, means for engaging the inner race with the body only upon rotation of the shaft and for otherwise permitting free rotation of the body. A shoe receiving member is secured to a spindle sleeve of the axle shaft and has a receiving surface which crosses the axle shaft at substantially a right angle. A shoe means maintains the engaging means in its engaged condition, the shoe means having a sliding surface which crosses the axle shaft at a substantially right angle, and a spring biases the sliding surface of the shoe means against the receiving surface of the shoe receiving member.

Abstract: A tandem master cylinder comprising a first plunger mechanically connected to a foot brake pedal and a second plunger separated from the first plunger to define one of the two fluid chambers. A T-shaped intermediate member provided with a retainer head is interposed between two plungers so as to limit the spaced distance therebetween and mount a return spring on the retainer head abutting the second plunger. The retainer head is of a reduced diameter thereby providing an annular gap between the retainer head and the inner wall of the cylinder body. Thus undesirable injury to the inner wall due to radial displacement of the retainer head will be avoided.

Abstract: An antirattle spring for a disc brake is represented as being entirely disposed outside of a clearance between one of a plurality of edges of pad assemblies and a stationary member anchoring against the one edge. Consequently, the antirattle spring is freed from any restraint as would otherwise be imposed upon a designer of a more complicated and smaller sized configuration of the spring, and is therefore more likely to retain its resiliency than are prior art antirattle springs. The antirattle spring has one end thereof bolted to the stationary member and the other end thereof engaging one of the plurality of edges with a required elastic energy stored within the middle portion of the spring.

Abstract: This invention provides a mechanism for adjusting the angle of the seat back to the seat in which a four link mechanism is provided and a segmental gear and a manual handle cooperate for engagement with each other in locking the four link mechanism and hence the back in immovable position against a gravity of a passenger.

Abstract: A viscous fluid coupling device for controlling the revolutions per minute of a radiator cooling fan in three steps in response to the temperature of an engine. The viscous coupling device includes a rotor driven by an engine, a casing member, a cover member, a labyrinth formed between projections of the rotor and projections of the casing member, a partition plate dividing the interior of the casing member into an operating chamber and a reservoir chamber, a first oil returning passage and a first pump formed in the inner circumference of the partition plate, and a second oil returning passage and a second pump formed in the outer circumference of the partition plate, with temperature-controlled valve apparatus for controlling the passages to thus control the shearing force between the casing member and rotor.

Abstract: A power assisted steering system for vehicles comprises a control valve for controlling the actuation of a hydraulic servomotor operatively connected to a steering link mechanism, a valve body connected for rotation with a pinion engaged with a rack which is operatively connected to the steering link mechanism, valve members operable within the valve body and connected to a steering shaft and a torsion bar connected to the valve body and the steering shaft at opposite ends thereof. The valve body and the pinion are formed as separate elements while the torsion bar and the pinion are formed integral with each other in one piece.

Abstract: Actuating handle means for vehicles including actuating handle lever means having one end pivotably connected with base plate means at a position remote from the actuating handle lever means for movement between an extended and folded positions, the actuating handle lever means being formed at the one end with a pair of spaced spring seat surface which are adapted to be engaged with the other end of resilient spring means in the extended and folded positions, respectively, the actuating handle lever means being further formed with an intermediate spring means between the spring seat surfaces so that the projection is overridden when the actuating handle means is moved between the extended and folded positions.

Abstract: An electromagnetically operable control valve mechanism of linear motor type adapted for vehicle emission control devices, comprising a single common inlet port, two outlet ports, an electric linear motor and a valve member operatively connected to the motor and commonly disposed on two paths connecting the outlet ports with the inlet port. The control valve mechanism alternately communicates the outlet ports with the inlet port in response to and in proportion to an electric current supplied to the motor.

Abstract: A free wheel hub mechanism including a body fixed to a wheel, an annular clutch continuously engaged with the body, an interengaging member connected to an axle shaft rotatable therewith and engageable with the annular clutch, a follower operatively connected to the annular clutch and axially movable in response to the rotation of a manual handle, and a nut fixed to the axle shaft for supplying a preload force on a taper bearing between a housing and the axle shaft.

Abstract: A hydraulic booster including a housing provided with an inlet hydraulically connected to a pump, a drain port hydraulically connected to a reservoir and a cylindrical bore, a power piston sealingly and slidably disposed within the bore and dividing the cylindrical bore into a working chamber and a drain chamber which is in normal communication with the drain port, an input member sealingly and slidably passed through a first end wall of the bore, the input member having an inner end sealingly and slidably interposed within the power piston and a valve seat formed on the inner end fact thereof, an output member sealingly and slidably passed through a second end wall of the bore and connected to the power piston at an inner end of the power piston the output member provided therein with a passage communicating with the inlet, a poppet valve member sealingly and slidably disposed within the power piston and cooperable with the valve seat for controlling hydraulic communication between the working chamber and th

Abstract: A method for producing stuffing for a spring-type mattress, including the steps of forming grooves on the whole circumference of edge portions of upper and lower mold members, fixing dense and sparse seats on flat surfaces of the upper and lower mold members, respectively, bending whole edge portions of both seats into the grooves, inserting and fixing elastic plates into the grooves, pouring a certain predetermined quantity of an undiluted solution of foaming plastics onto the flat surface of the lower mold member and tight contacting both mold member before forming the undiluted solution, horizontally and symmetrically cutting and dividing the stuffing into two parts, turning over the two parts and assembling them so as to cover a spring assembly thereonto thereby covering the two parts by an outer decorative member as a mattress unit.

Abstract: A brake booster of the stroke enlarging type wherein a power piston operated by the pressure difference existing on opposite sides thereof is moveable relative to a control piston provided with a control valve for controlling the difference of the pressure, and the power piston and the control piston are engageable to be immovable relative to each other by means of a locking member after the pressure difference has reached a predetermined value. The power piston is so constructed as to be able to advance a larger distance than the control piston, while the pressure difference is small, to move the output member by a larger amount in comparison to a small amount of advancement of the input member of the booster.

Abstract: The solenoid actuated valve device is comprised of a substantially cylindrical housing of magnetic material having a hollow tubular core of magnetic material disposed coaxially therein. The ends of the housing are sealingly closed by end walls of magnetic material and the housing is provided with a radially disposed inlet port and an axially disposed outlet port in communication with the central chamber of the tubular core. An annular bobbin having a solenoid coil thereon is slidably mounted on the tubular core for opening and closing the radially disposed openings through the core. A pair of springs extending between the end of the housing and the bobbin normally bias the bobbin into closing position relative to said openings with each spring being connected to one end of the coil and an electric terminal, respectively.

Abstract: An automatic fluid mixing valve comprises temperature sensing means provided in a body of the valve for automatically mixing high and low temperature fluids to provide a mixed fluid having a predetermined temperature, and pressure control means for controlling the pressure ratio of said low temperature fluid to the high temperature fluid at a predetermined value. The pressure control means serves to maintain a ratio of fluid flow of the low and high temperature fluids at a predetermined value thereby maintaining the temperature of the mixed fluid.

Abstract: A seat-supporting assembly for locking and unlocking an automobile seat in selected vertical positions includes a seat rail, a floor rail, a rotatable latch member, a locking plate and manual lever. The latch member is pivotably mounted at one point to the seat rail and at a second point to the floor rail for permitting the selective adjustment of the relative positions of the rails upon its rotation and includes a plurality of spaced notches. The locking plate is rockably connected to one of the rails and has a pin for engaging a selected one of the notches in the latch member to lock the latch member in a selected position. The lever is rotatably connected to a rail to rock the locking plate to an unlocking position. The assembly includes a spring for urging the locking plate and the lever into a locking position.

Abstract: Stirling cycle refrigerator comprising a pair of compression chambers provided at diametrically opposite positions, a pair of compressor pistons positioned respectively in the compression chambers for reciprocating movement therein, a pair of displacer chambers provided at diametrically opposite positions with each other, the displacer chambers being located along a diametrical line which makes an angle of 90.degree. with respect to a diametrical line along which the compression chambers are located, a pair of displacer pistons positioned respectively in the displacer chambers for reciprocating movement therein, rotatable swash plate means associated with the compressing and displacer pistons for producing reciprocating movements of the pistons, one of the compressing chambers being connected with one of the displacer chambers, and the other compression chamber being connected with the other displacer chamber so that stirling cycles are effected when the swash plate means is effected.

Abstract: An embroidery sewing machine is provided for automatically driving an embroidery frame along X and Y axes. The bed of the machine is provided with a pair of parallel slots extending parallel to the X axis. A pair of carriages extend through said slots and the opposite ends of a single Y-axis guide rod which extends parallel to the Y-axis are secured to said carriages. A traveller is movably guided along the guide rod and one of said carriages is movably guided along a similar X-axis guide rod mounted below the bed. A pair of servo motors each having a drive roller are disposed under the bed and the carriages and traveller are each provided with a plurality of rollers. Wires extend around the rollers and rotation of one of the servo motors drives the carriages upon which the Y-axis guide rod is mounted along the X-axis guide rod. The rotation of the other servo motor causes the traveller to be driven in the Y-axis direction along the Y-axis guide rod.

Abstract: A viscous fluid coupling for connecting a cooling fan to an engine radiator including a rotatable casing having a fluid operating chamber and a fluid reservoir chamber therein, the chambers being in fluid communication one with the other; a rotor located in the fluid operating chamber and being rotatable relative to the casing; valve means operable to control fluid communication between the chambers; and a bimetal coil on the exterior of the casing, the inner end of the coil being operatively connected to the valve means and the outer end of the coil being pivotally connected to the casing.

Abstract: A compound valve device comprises a body member, a first valve member being located in the body member and controlling the fluid communication between a first input port and a first output port, and a second valve member being located in the body member and controlling the fluid communication between a second input port and a second output port. The two valve members operate in sequence, without a significant difference in time in response to one signal pressure.