Abstract: A gravity-feed flow rack apparatus for multiple articles with rack modules arranged vertically.The rack apparatus include main module, front and rear auxiliary modules having article conveyance skid rails, insert joint for joining said modules, tiltable stopper means for serially advancing articles on said module, and control means performing control of desired operation condition of the rack apparatus.The rack apparatus may be a constructionally changeable in desired number and spaces of the rack modules in which flexible change is desired.

Abstract: The present invention relates to an apparatus for suctioning and collecting flotage on the water surface. The apparatus consists of a water guide passage to collect surface flotage, a guide plate floating below the water surface in said water guide passage, a rearward facing means to eject a pressurized water current, and an additional means similarly ejecting a pressurized water current to check and suppress currents which hinder the effect of the water flowing in said water guide passage.

Abstract: The invention relates to a water surface cleaner method and apparatus for suctioning flotage such as oil, pollutants, floating debris and the like from water surfaces. A water guide passage extends between front and rear ends of a floating body. Exhaust flow of a pump generates an effective surface current in front of the body and through the passage. A flotage collecting section is provided at the rear end of the water guide passage. Buoyant means support the flotage collecting section at and under the water surface. A propeller system is connected to a radio control receiver provided on said body.