Abstract: The purpose of the present invention is to further level the amount of polishing during electrolytic polishing of the inside of a hollow pipe. A holding frame for vertically holding a hollow pipe is pivotally supported on a rack so as to be vertically invertible about the vertical center of the hollow pipe. An electrode is inserted through the hollow pipe and a liquid buffer is disposed on each end of the hollow pipe. A valve mechanism is capable of switching a liquid supply/discharge circuit so as to supply an electrolyte via the liquid buffer positioned at the bottom and discharge the electrolyte via the liquid buffer positioned at the top whether it is before or after the inversion of the holding frame (inversion of the hollow pipe). During an electrolyte supply period before and after the inversion, an electrolytic treatment is as a matter of course carried out for a predetermined length of time. Although said switching by the valve mechanism may be manually performed, a control means may also be used.

Abstract: Upon using a stethoscope, there is a problem that it had been needed to interrupt work and mount the stethoscope using both hands, resulting in poor work efficiency. Also, when it is needed to repeatedly mount and unmount the stethoscope for such as a group examination, for example, it had been necessary to continuously carry out an operation of expanding ear tubes many times, which is complicated. Thus the present invention provides an attachment for a stethoscope comprising a mounting part which can be mounted to both of ear tubes, and a manipulating part for manipulating the mounting part, the manipulating part and the mounting part being connected through a rotatable fulcrum, so that the mounting part may be opened and closed by opening and closing operation of the manipulating part.

Abstract: Upon using a stethoscope, there is a problem that it had been needed to interrupt work and mount the stethoscope using both hands, resulting in poor work efficiency. Also, when it is needed to repeatedly mount and unmount the stethoscope for such as a group examination, for example, it had been necessary to continuously carry out an operation of expanding ear tubes many times, which is complicated. Thus the present invention provides an attachment for a stethoscope comprising a mounting part which can be mounted to both of ear tubes, and a manipulating part for manipulating the mounting part, the manipulating part and the mounting part being connected through a rotatable fulcrum, so that the mounting part may be opened and closed by opening and closing operation of the manipulating part.

Abstract: A symbol illuminator of game machines includes a wheel member having symbols at an outer circumferential surface thereof; a casing for the wheel member attached a printed circuit board having a plurality of illuminants; and a reflective frame member having enclosure walls expanding outwardly to a forward direction from a central part thereof, having a plurality of windows into which the illuminants are set, the illuminants being arranged so as to project inside a center part of the reflective frame member; and a projection part, having a reflective face, reflecting the light emitted by the illuminants toward at least the symbol from the inner side of the wheel member so that it can irradiate a reflex of a reflective frame member equally without spots to the symbol of wheel member and can reduce the number of the parts.

Abstract: A symbol display device includes a stepping motor, a drive gear attached to a drive shaft of the stepping motor, a reduction gear meshing with the drive gear, and a reel fixed to the reduction gear. The stepping motor, the drive gear and the reduction gear are contained in the housing disposed in the reel. As a pitch radius of the reduction gear is set so as to be larger than that of the drive gear, a velocity of rotation of the reduction gear is lower than that of the drive gear. The stepping motor causes to rotate the reel with reduction of the rotational velocity.

Abstract: A case of a stepping motor is divided by a partition. One of divided portions of the case contains a rotor and a stator of the stepping motor. A small-sized drive gear is fixed to a drive shaft integrally rotated with the rotor. The drive gear is meshed with a larger gear of a transmission gear. This transmission gear includes a smaller gear integrally rotated with the larger gear. The smaller gear is meshed with a large-sized output gear fixed to an output shaft of the stepping motor. Two pairs of the reduction gear mechanisms transmit a rotation of the drive shaft to the output shaft in a reduced state.

Abstract: A case of a stepping motor is divided by a partition. One of divided portions of the case contains a rotor and a stator of the stepping motor. A small-sized drive gear is fixed to a drive shaft integrally rotated with the rotor. The drive gear is meshed with a larger gear of a transmission gear. This transmission gear includes a smaller gear integrally rotated with the larger gear. The smaller gear is meshed with a large-sized output gear fixed to an output shaft of the stepping motor. Two pairs of the reduction gear mechanisms transmit a rotation of the drive shaft to the output shaft in a reduced state.