Abstract: In an automotive compressor, a pulley (6) is rotatably supported on a compressor housing (1) through a bearing (5) to have an axial gap (10) left between the compressor housing and the pulley. A waterproof cover (13) covers the axial gap and serves to suppress water from the outside from reaching the bearing. The waterproof cover is fixed to the compressor housing by a ring-shaped fastener (14). Instead of use of the waterproof cover, the axial gap may be controlled in size thereof.

Abstract: An auxiliary equipment of driving force for bicycle is provided wherein a reduction gear of the traction roller type is adopted, and the contact pressure between the outer peripheral surfaces of the traction rollers and the outer peripheral surface of the rotatable shaft and the inner peripheral surface of the outer ring is controlled corresponding to the torque to be transmitted, so that the battery is less exhausted and that the traveling distance of the electrically power augmented bicycle is prolonged.

Abstract: The printer device of the present invention makes use of a thermal head to transfer ink to recording paper on a platen roller, and includes a thermal head support member, cooling means, and a support member that supports the cooling means. The thermal head support member has a support component that supports the thermal head, and a recess provided to the back side, which is the opposite side from the support component, and is movably disposed between a transfer position where the ink is transferred and a retracted position to which the thermal head support member) is retracted from the transfer position. The cooling means radiates the heat generated by the thermal head. The support member supports the cooling means such that at least part of the cooling means will enter the recess when the thermal head support member is moved to its retracted position.

Abstract: The printer device of the present invention makes use of a thermal head to transfer ink to recording paper on a platen roller, and comprises a thermal head support member, cooling means, and a support member that supports the cooling means. The thermal head support member has a support component that supports the thermal head, and a recess provided to the back side, which is the opposite side from the support component, and is movably disposed between a transfer position where the ink is transferred and a retracted position to which the thermal head support member) is retracted from the transfer position. The cooling means radiates the heat generated by the thermal head. The support member supports the cooling means such that at least part of the cooling means will enter the recess when the thermal head support member is moved to its retracted position.

Abstract: A semiconductor package includes a semiconductor chip having a plurality of electrodes on a main surface thereof, and a package substrate having first and second parallel surfaces, wherein the package substrate is fixed to the semiconductor chip in such a positional relationship that the main surface of the semiconductor chip faces the first surface, and has substantially the same size as a size of the semiconductor chip as viewed on a projection plane vertical to the first surface, and wherein the package substrate has a passage extending between the first and the second surfaces for electrically connecting the electrodes of the semiconductor chip to predetermined portions of the circuit board. A method of mounting the above-mentioned semiconductor package to the circuit board comprises electrically connecting the electrodes of the semiconductor chip to predetermined portions of the circuit board by bonding wires or bumps, through the passage provided to the semiconductor package.