An attraction type magnetic levitation vehicle system includes a magnetic rail laid on the side of a track and a levitation vehicle having a supporting electromagnet and a guide electromagnet each having a plurality of magnetic poles arrayed along the track. A magnetic pole surface of each of the plurality of magnetic poles is in opposing relationship to a surface of the magnetic rail, respectively. The magnetic pole surface of at least one of the supporting and guide electromagnets and the surf...

A miniature motor comprising a stator having permanent magnets constituting a two-pole field, and a rotor having rotor windings wound on a rotor core of a three-pole construction, in which the rotor core is formed in such a manner that the cross-sectional shape of the rotor core normal to the motor shaft is made symmetrical with respect to the radial center line of each pole thereof and that the gap between the permanent magnets and a predetermined range from the center line of the arc-shaped ou...

A copying apparatus for producing a visible image of an original on a copy sheet which has a conductive base and a dielectric surface. During the movement of a carriage across a photoconductive base plate, charging means imposes a uniform electrostatic charge on the photoconductive surface of the base plate, projecting means successively projects a partial light image onto the uniformly charged photoconductive surface of said base plate through framing means to form an electrostatic latent image...

A copying apparatus for producing a visible image of an original on a copy sheet which has a conductive base and a dielectric surface. The original is supported by support means. An electrostatic latent image of the original is formed on a photoconductive surface of a photoconductive plate by charging means and an optical assembly. The copy sheet is fed by sheet feed means in such a way that the dielectric surface of the copy sheet faces and is against the photoconductive surface on which the el...

First and second trenches are formed on an n.sup.+ type substrate at a power MOSFET formation region and a peripheral device formation region, respectively. An n.sup.- type epitaxial film, a p type epitaxial film, and an n.sup.+ type epitaxial film are deposited on the substrate and in the trenches, and then flattening is performed. As a result, an n.sup.- type region is provided in the second trench of the peripheral device formation region. Then, a p type well layer is formed in the n.sup.- ty...

A tamping shoe for a vibration rammer has a plurality of through holes communicating between an under surface and an upper surface. The through holes permit the escape of air trapped between the under surface and a surface being tamped, and thereby reduce the amount and pressure of air compressed under the tamping shoe. This reduces noise pollution produced during tamping. In a preferred embodiment, the through holes are tapered outward in the direction of air flow. Air passing through a through...

In a magnetic tape recording/playing device, a reciprocating member control mechanism, in which reciprocating members employed in the channel change mechanism, FF (fast forward)/REW (rewind) mechanism and the like are interlocked with a cam which is driven by a rotary member driven by a tape drive motor, and provided between this rotary member and cam is an idler which is engaged with an electromagnetic plunger which is so arranged as to selectively transmit or shut off the rotation from the rot...

In a magnetic tape recording/playing device, a reel base driving mechanism wherein a pulley driven by an electric motor and a reel drive block are fitted rotatably independently of each other to a shaft of each of forward- and reverse-side reel bases, while an idler is movably provided between said reel bases, which idler having an input section or idler which engages said pulleys and an output section or idler which engages said reel drive blocks, said idler being made to engage the forward- or...

A polyphenylene sulfide resin composition comprising (1) a polyphenylene sulfide resin having a melt flow value of at least 1,000 g/min., (2) silicic acid and/or a silicate, and (3) a silane compound composed of a vinylsilane and an aminosilane and/or an epoxysilane.

A floating apparatus for use in an attractive floater railway includes a magnetic rail mounted on the underside of a track. The magnetic rail comprises sheets of ferromagnetic material laminated together and is formed to have a cross section in the shape of a trapezoid or a quadrant of a circle with faces of the rail including a horizontal surface and a vertical surface. A guiding electromagnet is disposed opposite to the vertical surface and a supporting electromagnet is disposed opposite to th...