Abstract: Rack arrangement designed for installation in, for example, a warehouse or a factory for storage of loads. A pair of stationary racks having a plurality of vertically and/or laterally partitioned storage spaces are arranged in spaced parallel relation. A movable rack or racks having a plurality of similarly partitioned storage spaces are arranged between the two stationary racks, with a working space defined between the facades of any selected pair of adjacent racks. A rail is mounted on the top of each stationary rack and supported thereon. A girder supported and guided by the pair of rails is movable along the length of the rails. A load transfer unit is supported and guided by the girder for movement within the working space. The load transfer unit includes a take-in/take-out device which is up-and-down movable within the transfer unit, able to support a load, and is retractably movable relative to a storage space for delivery of the load to and from the storage space.

Abstract: The can end is formed with a circular severing score for severing the area defined thereby from the can end by pulling a manipulating tab secured within the area defined by the score at a position adjacent thereto. In order to increase the pressure resisting strength against the internal pressure caused by the content in the can, the can end is made from a thin aluminum alloy sheet having the yield strength in the range of 24-29 kgf/mm.sup.2 as well as the elongation equal to or greater than 6%, while the aperture rate defined by the ratio of the area formed within the score with respect to the total area of the can end is made at least equal to or greater than 60% so that the pressure resisting strength is kept substantially at least 5 kgf/cm.sup.2.