Abstract: A device for producing mineral-containing water comprises a case communicated with a water outlet of a water storage vessel with or without the use of a plug, the case being provided with a plurality of small diameter water passages. Small masses of ceramics serving as mineral-water production material are accommodated in the case. The device permits only a required quantity of supply water to be rendered to mineral-containing water for drinking or cooking, by contacting the water with the small masses of ceramics. Mineral-containing water is produced when pouring supply water from the faucet into the water storage vessel, for instance, a canteen, a kettle, a pot, a bottle, etc., and this requires no substantial change in the appearance of the vessel or in the operation of pouring water.

Abstract: There is provided a device for converting water into mineral water which comprises a covered or uncovered porous filter and ceramic as a calcium and magnesium source and active carbon as a deodorizer randomly held in the filter whereby when water flows through the filter the water is converted into mineral water.

Abstract: A show case for displacing articles of commerce having an electronic lock and partially open in the front side for slidably receiving a pair of sliding doors which are adapted to overlap at their inner edges when the doors are in the closed position, said doors having holes at their inner edges adapted to align with each other when the doors are the closed position and said electronic lock including a solenoid in a position corresponding to the position of said inner edges of the doors in the closed position, a lock pin movable between the retracted position in which the lock pin is received in the solenoid and the extended position in which the lock pin is received in the holes in the doors in the closed position, a receiver adapted to receive radio waves from an external source, door closing detection means and a solenoid drive circuit electronically connected to said receiver though a timer for driving said lock pin to the retracted position upon receipt of the output signal from said receiver and also con