Abstract: A wave energy converter is disclosed which includes a V-shaped floating frame having a first section and a second section that is narrower than the first section so as to form a V-shaped structure which is hollow in the middle, an anchor base mounted at the bottom of the sea and connected to the V-shaped floating frame at the first end by a set of chords, a first bucket turbine and a second bucket turbine placed in the hollow section and connected to second section so that they are partially submerged in the sea, and an electricity converting assembly operable to receive and convert energy generated by both first bucket turbine and said second bucket turbine into electricity.

Abstract: A method and device for cleaning drinkware without using electricity are disclosed including a handle, a shaft connected to the handle, a cleaning brush connected to the shaft, and a top section connected to the cleaning brush; when the interior bottom of a drinkware is pressed down, creating a pressure upon the top section, the cleaning brush is rotated in a first direction, and when the pressure decreases, the cleaning brush rotates in a second direction opposite to the first direction.

Abstract: A dust-proof drilling apparatus and method are disclosed which includes a body having a motor, a drill bit, a handgrip, and a power switch; an air suction unit, directly connected to the front of the body, designed to create an axial flow of air from the drill bit toward the body; and a dust collecting unit, directly and removably connected to the front of the air suction unit, designed to collect dusts and materials from the drilling operation of the drill bit, wherein the body, the air suction unit, and the dust collecting unit are connected sequentially along the axis of the drill bit.

Abstract: A smart portable toilet bowl is disclosed including a bottom tank releasably connected to a top tank, a hollow ball valve means operative to open when the toilet seat is open and close when the toilet seat is closed, and a controller operative to detecting when a user starts to use said smart portable toilet, starting a deodorizing fan to introduce antibacterial and deodorizing materials into the top tank and at the same time start an extractor fan to draw out odor, and when the user finishes using the toilet, activating a spray nozzle to clean the user for a first predetermined amount of time, drying up the user using drying fan for a second predetermined amount of time, and cleaning the toilet bowl using a flushing ring for a third predetermined amount of time.

Abstract: A smart portable toilet bowl includes a bottom tank releasably connected to a top tank, a hollow ball valve device configured to open when the toilet seat is open and close when the toilet seat is closed, and a controller configured to detect when a user starts to use the smart portable toilet, start a deodorizing fan to introduce antibacterial and deodorizing materials into the top segment and at the same time start an extractor fan to draw out odor, and when the user finishes using the toilet, activating a spray nozzle to clean the user for a first predetermined amount of time, dry up the user using drying fan for a second predetermined amount of time, and clean the toilet bowl using a flushing ring for a third predetermined amount of time.