Abstract: A small gap is formed between a worm shaft 3 and a second bearing 20, so that the worm shaft can be tilted relative to the inner ring 20a of the second bearing 20 without fail when preloaded by a torsion spring 14. An elastic member 41 is provided in at least portion of a circumferential groove 40 in the small gap. The worm shaft 3 and the inner ring 20a of the second bearing 20 are not in contact with each other, and their metallic clank in the small gap can be prevented. By providing a projecting portion(s) 3b on one side or both sides, with respect to the axial direction, of the circumferential groove 40, the small gap between the worm shaft 3 and the inner ring 20a of the second bearing 20 can be made large, and it is possible to enlarge the range over which the worm shaft 3 can swing.

Abstract: In an electric power steering apparatus that generates an auxiliary steering torque by a brushless motor in response to a steering torque applied on a steering wheel and transmits it to an output shaft of a steering mechanism while reducing it by means of a reduction gear, the apparatus comprises a rotor (10) to which a cylindrical permanent magnet for rotational driving (12) and a member to be detected (13) for detection of a rotational angle of the rotor are attached and a cylindrical stator (30) opposed to the rotor in which a laminated core (16) on which a coil is wound, detection means (17) for detecting the rotational angle of the rotor by the member to be detected and a terminal (19) for providing connection to the coil are integrally formed by resin molding. At least one bearing (8, 9) for rotatably supporting the rotor is disposed radially inside the stator and between the permanent magnet for rotational driving and the member to be detected.

Abstract: A fuel cell separator containing conductive material and epoxy resin is provided. In the fuel cell, the epoxy resin is made of solid epoxy resin whose epoxy equivalent weight is 300-500. Further, according to another fuel cell separator, raw materials containing not lower than 60 weight % of conductive material and 34-40 weight % of resin material are kneaded, and adjusted to have a flow index of 5-20%. A kneaded compound is compression-molded so that a fuel cell separator is obtained.

Abstract: The invention relates to a rubber gasket to be disposed in a compressed state between separators of a fuel cell, which comprises: a sealing portion having a sectional shape of a two-projection structure comprising: a first projection having a curved slope of a first curvature radius D; and a second projection provided on the first projection and having a second curvature radius H; and a pedestal portion that extends in a horizontal direction with a predetermined thickness continuously from a foot portion of the curved slope of the first projection and has a flat bottom surface.

Abstract: Provided is an electric power steering apparatus comprising a housing, a motor attached to this housing and transmitting an auxiliary steering force to a rotary shaft through a motor shaft, a worm formed on or fitted on the rotary shaft and having a gear portion formed of a metal or a resin, rolling bearings provided in the housing, disposed respectively in positions on both sides of the worm and rotatably supporting the rotary shaft, an output shaft transmitting a steering force for steering an axle and rotatably supported in a predetermined position of the housing, and a worm wheel formed on or fitted on the output shaft in a way that meshes with the worm and having a gear portion formed of the resin, wherein a pre-load mechanism for applying a pre-load acting towards the worm wheel is provided at a shaft end portion, distal from the motor, of the rotary shaft.

Abstract: An assist apparatus for electric-powered power steering apparatus is provided to have a torque sensor, steering shaft, preload pad 70, a torsion coil spring 30, and an electric motor 31. With the preload pad 70 and torsion coil spring 30, an elastic force is applied to the worm shaft 29 in the direction toward the worm wheel 28, whereby noises due to colliding teeth are prevented from occurring in the meshing portion between the worm wheel 28 and worm shaft 29.

Abstract: A fuel cell separator containing conductive material and epoxy resin is provided. In the fuel cell, the epoxy resin is made of solid epoxy resin whose epoxy equivalent weight is 300-500. Further, according to another fuel cell separator, raw materials containing not lower than 60 weight % of conductive material and 34-40 weight % of resin material are kneaded, and adjusted to have a flow index of 5-20%. A kneaded compound is compression-molded so that a fuel cell separator is obtained.

Abstract: A method for manufacturing a fuel cell separator, characterized in that graphite and carbon black are mixed into molten thermoplastic resin material so that melt mixing is carried out, and the obtained kneaded compound is formed into a predetermined shape.

Abstract: A magnetic resonance imaging (MRI) diagnostic apparatus capable of eliminating density inhomogeneity of the tomographic images obtained thereby. The MRI diagnostic apparatus includes a gantry for defining a space for a MRI diagnosis; an RF shield, disposed inside the gantry and outside an RF coil; and material for correcting a distribution of an RF magnetic field at the time of RF transmitting or receiving by the RF coil, wherein the field correcting material is interposed between the biological body lying inside the shield and the RF coil. Preferably, the field correcting material includes an aqueous high-molecular gel sheet which is flexibly deformable along the shape of the biological body.

Abstract: Disclosed is an RF magnetic shield for magnetic resonance imaging apparatus having a gradient coil and an RF coil allocated in a generally cylindrical magnet of the apparatus. The RF magnetic shield comprises conductive shielding plate members, disposed between the gradient coil and the RF coil, through which long slits are formed, and capacitors connected to both the longitudinal ends of the slits, respectively. Each of the capacitors consists of a multilayer capacitor, which is a larger capacitance and is continuously and electrically connected to both the longitudinal ends of the respective slits.

Abstract: Between at least one of a transmitting coil and a receiving coil and a subject to be examined is interposed a member containing a high molecular compound such as a molded sheet of nonconductive fiber or rubber, a PVA gel sheet or a PAR gel sheet. Thereby, the radio-frequency magnetic field distribution can be regulated with ease without adjusting hardware or software of a magnetic resonance diagnostic apparatus, thus permitting diagnosises to be made with high accuracy.