Abstract: Disclosed is a spent fuel storage rack that exhibits high structural strength without unduly increasing the number of welds. The spent fuel storage rack having a plurality of storage cells for storing spent fuel assemblies includes a base plate, a plurality of partition plates having vertically-oriented comb-like slits formed at upper and lower parts thereof or at either the upper or lower part, the partition plates being stacked in multiple levels above the base plate, and a plurality of side plates which surround the peripheries of the plurality of partition plates stacked in multiple levels. The plurality of partition plates are adapted to form the plurality of storage cells in such a manner that a set of the partition plates is repeatedly stacked in the vertical direction while the upper slits formed in the partition plates at a relatively low position is engaged with the lower slits formed in the partition plates at a relatively high position.

Abstract: An upper housing and a lower housing of a mobile terminal apparatus has a hinge for rotatably and slidably supporting both the upper and lower housings at one end portion of each of the upper housing and the lower housing, and being able to slidably rotate one of the two housings relative to the other to make both the housings to be an opened state or a closed state. Further, positioning means performs a positioning in the closed state by detachably engaging the upper housing with the lower housing on another end portion opposite to the one end portion. As the positioning means is constituted of the projection and recess of the housings, the positioning means can be realized with a relatively simple structure and with a relatively low cost.

Abstract: Disclosed herein is a rear projection display device including a video image projection unit, a quadrilateral mirror for reflecting video image light emerging from the video image projection unit, a transmission screen onto which the video image light reflected by the mirror is projected from the rear side thereof, and a back cover for covering the rear side of the transmission screen; the back cover having a mirror holding structure for holding the four sides of the mirror along the inner surface of the back cover; the mirror holding structure including a mirror holder as a separate member fixed to the back cover for holding the upper side of the mirror, a first holding portion integral with the back cover for holding the lower side of the mirror, and a second holding portion integral with the back cover for holding the right and left sides of the mirror.

Abstract: An upper housing and a lower housing of a mobile terminal apparatus has a hinge for rotatably and slidably supporting both the upper and lower housings at one end portion of each of the upper housing and the lower housing, and being able to slidably rotate one of the two housings relative to the other to make both the housings to be an opened state or a closed state. Further, positioning means performs a positioning in the closed state by detachably engaging the upper housing with the lower housing on another end portion opposite to the one end portion. As the positioning means is constituted of the projection and recess of the housings, the positioning means can be realized with a relatively simple structure and with a relatively low cost.