Abstract: To provide a link type front suspension structure that makes it difficult for a bending moment to act on a push rod conveying expansion and contraction of a front fork to a shock absorber. An upper arm rotatably bridges between an upper end of a push rod and the front fork, and the length of this upper arm is equal to the length between a linking point of a lower end section of the push rod of the axle support arm and a linking point of the arm holder, and is substantially parallel with this length. As a result, a parallelogram link is formed by the front fork, the push rod, the upper arm and part of the axle support arm.

Abstract: To provide a power transmission mechanism into which a driven flange is assembled, the power transmission mechanism producing no metal contact noises. A driven flange is divided into an engine side flange and a wheel side flange. The engine side flange may be formed of a steel forging and the wheel side flange may be formed of an aluminum forging. The engine side flange is spline-fitted in a final gear integrally rotated with a bevel gear. Furthermore, openings are formed in the wheel side flange at equal intervals and blocks having a threaded hole therein are pressed into the openings. In addition, the engine side flange, the wheel side flange, and the blocks are integrally connected together with bolts.

Abstract: An attachment stay is fixed to corresponding fork pipes, a shaft is inserted between through holes of respective attachment stays, one end of a cushion arm is rotatably supported on the shaft via a ball bearing and a needle bearing, and a lower end of a shock absorber is rotatably attached to a middle section of the cushion arm to provide a front suspension structure offering a high degree of freedom during assembly of the cushion arm.

Abstract: To improve the operability of push rods. A link-type front suspension for a front wheel includes forked pipes, push rods, damping devices, upper links, and pivot links. The push rod and the damping device are disposed substantially coaxially with each other in a side view and are rotatably connected to each other. Upper ends of the damping devices and upper ends of the forked pipes are connected by an upper bracket. A top bridge is provided to mount the upper ends of the forked pipes, and a steering stem is provided to mount intermediate portions of the forked pipes. A stem pipe is provided for connecting a rear central portion of the top bridge to a rear central portion of the steering stem and is turnably mounted to a head pipe. A leading end of the pivot arm is connected to an axle. The length of the pivot arm is equal to that of the upper link.

Abstract: To arrange a mounting portion of a disk brake in such a manner as to not be offset from a bearing portion of a caliper bracket. A large diameter disk flange is formed on one side surface of a hub of a front wheel. An inner peripheral end portion of a disk brake is mounted on the disk flange. A small diameter boss is formed inside the disk flange on the hub. An inner end of a bracket boss formed integrally with a caliper bracket is fitted in an inner surface of the projecting end of the boss. The bracket boss is supported by inner and outer bearings on the axle. A center of the disk brake passes through a portion between the inner and outer bearings side. Accordingly, the mounting portion for mounting the disk brake on the disk flange is not offset from the bearing portion composed of the outer bearing and the inner bearing of the bracket boss.

Abstract: To facilitate positioning of a speedometer gear box provided between a hub and a caliper bracket. A speedometer gear box is disposed between one side face of a hub of a front wheel and a bracket boss portion of a caliper bracket for rotation on an axle. A stopper is provided at a position on an inner side surface of the caliper bracket at a location where it cannot be visually observed from the outside such that, when a link type front suspension is extended fully, a positioning projection formed on an outer periphery of the speedometer gear box secured to the axle is contacted with the stopper. An indicator is formed at a position of the inner side surface of the caliper bracket in the proximity of an end edge at which it can be visually observed readily from the outside.

Abstract: A heat exchanger is made of a metal such as aluminum and for use in the air conditioning apparatuses such as the car coolers and the room air conditioners. A coolant inlet pipe (6) has an end which is forced into a pipe insertion bore (10) of a pipe joint (8) for connection to an external piping, with a cylindrical brazing agent piece (15) being interposed between the outer periphery of the inlet pipe end and the inner peripheral wall of the bore, such that the pipe (6) is brazed integral to the joint (8) by means of the cylindrical piece (15). This cylindrical brazing agent piece (15) is composed of a core layer which has an outer and inner surfaces clad with a brazing agent layer. The pipe (6) and the joint (8) can be preassembled without failing to interpose between them the brazing agent piece (15), so that said pipe and said joint can be brazed one to another surely and at a lowered cost.

Abstract: A refrigerant tube for use in heat exchangers comprises a flat tube having parallel refrigerant passages in its interior and comprising upper and lower walls and a plurality of reinforcing walls connected between the upper and lower walls, the reinforcing walls extending longitudinally of the tube and spaced apart from one another by a predetermined distance. The reinforcing walls are each formed with a plurality of communication holes for causing the parallel refrigerant passages to communicate with one another therethrough. Each of the reinforcing walls is 10 to 40% in opening ratio which is the proportion of all the communication holes in the reinforcing wall to the reinforcing wall.

Abstract: There are herein disclosed a raw material for a complex perovskite ceramic composition which is intended to uniformly disperse a trace amount of an addition component (manganese) therein, and a process for preparing the ceramic composition.A manganese-containing composite oxide is represented by the general formula (Mn.sub.a MeI.sub.1-a)MeII.sub.b O.sub.c wherein a is a value in the range of 0<a.ltoreq.0.3; MeI is at least one of Mg, Ni and Zn; MeII is one of Nb, Ta and W; when MeII is Nb or Ta, b is 2 and c is 6, or when MeII is W, b is 1 and c is 4. By the use of a raw material containing this manganese-containing complex oxide, there can be prepared an Mn-containing complex perovskite compound composition which contains Mn and at least one of complex perovskite compounds represented by the general formula Pb(BIBII)O.sub.3 wherein BI is one of Mg, Ni and Zn; and BII is one of Nb, Ta and W.

Abstract: A loading unit for a disc cartridge includes a cartridge holder movably supported relative to a chassis. The cartridge holder is moved towards a recording and/or reproducing device for recording and/or reproducing information signals on or from a recording medium housed within the disc cartridge. The cartridge holder is configured to hold the disc cartridge inserted therein and has an engaging recess and an insertion detector. The insertion detector is moved in response to the disc cartridge being inserted into the cartridge holder. A stop mounted on the cartridge holder has a retention portion for retention by the chassis and an engaging protrusion for engagement with the engaging recess of the disc cartridge. The stop is slidingly contacted with the chassis in conjunction with movement of the cartridge holder towards the recording and/or reproducing device.

Abstract: A disc recording/reproducing apparatus for selectively taking out a disc housed within a housing unit for recording or reproducing information signals on or from the disc is disclosed.

Abstract: A dielectric ceramic composition is herein disclosed which comprises four lead-containing perovskite compounds of (a) lead magnesium tungstate ?Pb(Mg.sub.1/2 W.sub.1/2)O.sub.3 !, (b) lead nickel niobate ?Pb(Ni.sub.1/3 Nb.sub.2/3)O.sub.3 !, (c) lead titanate (PbTiO.sub.3) and (d) lead zirconate (PbZrO.sub.3) as main components and which further contains an oxide of a rare earth element; and by adjusting a molar ratio of the components (a) to (d) and an amount of the oxide of the rare earth element in specific ranges, there can be obtained the dielectric ceramic composition suitable for a dielectric substance for a multilayer ceramic capacitor which has a low firing temperature, a high dielectric constant at room temperature and a low change rate of the dielectric constant to temperature.

Abstract: A hose includes an outer hose member, and an inner hose member. The outer hose member includes a first bellows-like tubular portion at least in the intermediate area in the axial direction. The inner hose member is disposed substantially coaxially in the outer hose member, includes a second bellows-like tubular portions in the area corresponding to the first bellows-like tubular portion of the outer hose member, and adapted to form a tubular air layer between the second bellows-like tubular portion and the first bellows-like tubular portion. Because of the outer hose member and the inner hose member, the hose exhibits a high flexibility, a reliable barrier ability against gasoline fuels or the like, and an improved adiabatic ability and anti-flammability for the inner hose member.

Abstract: A process for producing a flat heat exchange tube having parallel refrigerant passages in its interior and comprising flat upper and lower walls, opposite side walls and a plurality of reinforcing walls connected between the upper and lower walls, extending longitudinally of the tube and spaced apart from one another by a predetermined distance, using a rolling mill including a central work roll and a plurality of planetary work rolls arranged around a portion of the periphery of the central work roll and spaced apart circumferentially thereof, the central work roll being formed with parallel annular grooves in the periphery thereof.

Abstract: A refrigerant tube for use in heat exchangers comprises a flat aluminum tube having parallel refrigerant passages in its interior and comprising flat upper and lower walls and a plurality of reinforcing walls connected between the upper and lower walls, extending longitudinally of the tube and spaced apart from one another by a predetermined distance. The reinforcing walls are each formed with communication holes for causing the parallel refrigerant passages to communicate with one anther therethrough. The flat aluminum tube is prepared from upper and lower two aluminum sheets by bending opposite side edges of the lower aluminum sheet to a raised form and joining the bent edges to the respective side edges of the upper aluminum sheet which is flat so as to form a hollow portion. The reinforcing walls are formed by joining to the inner surface of the upper wall ridges projecting inward from the lower wall.

Abstract: A refrigerant tube for use in heat exchangers comprises a flat aluminum tube having parallel refrigerant passages in its interior and comprising flat upper and lower walls and a plurality of reinforcing walls connected between the upper and lower walls, extending longitudinally of the tube and spaced apart from one another by a predetermined distance. The reinforcing walls are each formed with communication holes for causing the parallel refrigerant passages to communicate with one anther therethrough. The flat aluminum tube is prepared from upper and lower two aluminum sheets by bending opposite side edges of the lower aluminum sheet to a raised form and joining the bent edges to the respective side edges of the upper aluminum sheet which is flat so as to form a hollow portion. The reinforcing walls are formed by joining to the inner surface of the upper wall ridges projecting inward from the lower wall.

Abstract: A recording and/or reproducing apparatus for a magneto-optical recording medium housed within a disc cartridge. The recording and/or reproducing unit includes a magnetic head for applying a perpendicular magnetic field to the magneto-optical recording medium. A transporting unit includes a holding section for holding the inserted disc cartridge and a pair of cam members for moving the holding section in horizontal and vertical directions in a casing. The cam members are moved a first horizontal displacement as a result of insertion of the disc cartridge and set a driving unit into an operating state. The cam members cause the holding section to be moved in the horizontal direction by a second horizontal displacement of the cam members. The cam members cause the holding section to be loaded on the recording and/or reproducing unit by a third horizontal displacement continuous with the second horizontal displacement.

Abstract: A refrigerant tube for use in heat exchangers comprises a flat aluminum tube having parallel refrigerant passages in its interior and comprising flat upper and lower walls and a plurality of reinforcing walls connected between the upper and lower walls, extending longitudinally of the tube and spaced apart from one another by a predetermined distance. The reinforcing walls are each formed with communication holes for causing the parallel refrigerant passages to communicate with one anther therethrough. The flat aluminum tube is prepared from upper and lower two aluminum sheets by bending opposite side edges of the lower aluminum sheet to a raised form and joining the bent edges to the respective side edges of the upper aluminum sheet which is flat so as to form a hollow portion. The reinforcing walls are formed by joining to the inner surface of the upper wall ridges projecting inward from the lower wall.

Abstract: A pipe joint for joining two pipes end to end comprises a hollow cylindrical spigot portion having an annular projection on the outer periphery of a base end thereof, a hollow cylindrical socket portion having an inside diameter approximately equal to the outside diameter of the spigot portion and formed with two opposed apertures in its peripheral wall close to a forward end thereof and with a stepped part on the inner surface of the peripheral wall for the projection to come into contact with, the stepped part being closer to a base end of the socket portion than the apertures, and a stopper having a pair of circular-arc resilient legs fittable into the respective apertures from outside to project inward and each having a slanting inner surface, the legs being opposed to each other for the inwardly curved surfaces thereof to face each other.

Abstract: An image forming apparatus comprises a rotatable image carrying member, a charger, a scanner unit for forming a latent image at an exposure position on the surface of the image carrying member charged by the charger, a developing device for converting the latent image to a toner image, and a transfer roller for transferring the toner image on the image carrying member to a recording paper by application of a transfer voltage to the toner image. A conductive member is provided on a charger case covering the charger adjacent to the charger and between the charger and the exposure position. The conductive member is positioned close to the surface of the photosensitive drum. Thus, ions (positive charges) generated by the charger are prevented from reaching the exposure position where the latent image is formed.