Abstract: A collapsible water filter has a telescopic container and a filter cartridge. The telescopic container has a telescopic segment and a connection segment, and the telescopic segment having a first end and a second end opposite to the first end. The telescopic segment defines a holding space, and the holding space has a first opening adjacent to the first end of the telescopic segment. When the first end and the second end of the telescopic segment are under a force such that the first end and the second end approach each other, the volume of the holding space is reduced. When the first end and the second end of the telescopic segment are under a force such that the first end and the second end move away from each other, the volume of the holding space is increased.

Abstract: A collapsible water filter has a telescopic container and a filter cartridge. The telescopic container has a telescopic segment and a connection segment, and the telescopic segment having a first end and a second end opposite to the first end. The telescopic segment defines a holding space, and the holding space has a first opening adjacent to the first end of the telescopic segment. When the first end and the second end of the telescopic segment are under a force such that the first end and the second end approach each other, the volume of the holding space is reduced. When the first end and the second end of the telescopic segment are under a force such that the first end and the second end move away from each other, the volume of the holding space is increased.

Abstract: A water filtering device includes a filter element and telescopically interconnected inner and outer cylinder units. Each of the inner and outer cylinder units has an open inner end and a closed outer end. A first space is formed in the inner cylinder unit. The filter element is disposed within the inner cylinder unit, and is adjacent to the inner end of the inner cylinder unit so as to define a second space between the filter element and the outer cylinder unit. The outer cylinder unit is movable on the inner cylinder unit, such that the outer ends of the inner and outer cylinder units are moved toward each other, thereby forcing water to flow from the second space into the first space through the filter element.

Abstract: An ultrasonic cleaning device includes a drain connecting member adapted to be engaged with a drain hole of a sink, and having a valve seat, a valve member having a valve portion angularly movable relative to the valve seat between an opened position to be disengaged from the valve seat to thereby allow for liquid communication between a reservoir of the sink and the drain hole, and a closed position to be engaged with the valve seat for interrupt the liquid communication, and an ultrasonic generating unit disposed in the valve member for exerting ultrasonic vibration on liquid within the reservoir.

Abstract: A water filtering device includes a filter element and telescopically interconnected inner and outer cylinder units. Each of the inner and outer cylinder units has an open inner end and a closed outer end. A first space is formed in the inner cylinder unit. The filter element is disposed within the inner cylinder unit, and is adjacent to the inner end of the inner cylinder unit so as to define a second space between the filter element and the outer cylinder unit. The outer cylinder unit is movable on the inner cylinder unit, such that the outer ends of the inner and outer cylinder units are moved toward each other, thereby forcing water to flow from the second space into the first space through the filter element.

Abstract: An ultrasonic cleaning device includes a drain connecting member adapted to be engaged with a drain hole of a sink, and having a valve seat, a valve member having a valve portion angularly movable relative to the valve seat between an opened position to be disengaged from the valve seat to thereby allow for liquid communication between a reservoir of the sink and the drain hole, and a closed position to be engaged with the valve seat for interrupt the liquid communication, and an ultrasonic generating unit disposed in the valve member for exerting ultrasonic vibration on liquid within the reservoir.