Bubble generating device

Year	Description
2000	Invention patented by Chien-Nan Yang on March 22th, 2000. Abstract: A bubble generating device is to be used with a water tank which has a water receiving chamber, and includes a bubble emission member adapted to be disposed in the water receiving chamber and formed with bubble emission holes, an air pump for providing pressurized air, a first air passage tube with a first end connected to the air pump and an opposite second end, and a second air passage tube with a first end connected to the bubble emission member and an opposite second end. The control unit includes a cam wheel, a valve seat formed with an air chamber which communicates fluidly the second ends of the first and second air passage tubes, and a spring-loaded piston rod with a first end portion in contact with a peripheral cam surface of the cam wheel and a second end portion extending into the air chamber and provided with a valve piece. A drive unit is coupled to the cam wheel for driving rotation of the cam wheel so as to permit the cam surface to intermittently push the piston rod toward the air chamber to enable the valve piece to alternatingly block and unblock air flow through the air chamber from the second end of the first air passage tube to the second end of the second air passage tube.
2000	Invention patented by Sen-Yung Lee, Sheng-Jye Hwang, Shueei-Muh Lin, and Hsin-Mao Hsieh on November 29th, 2000. Abstract: A bubble generating device includes a central tube having a hollow interior and a float is connected to the central tube. The central tube extends through a disk and a porous film is fixedly mounted to a peripheral wall of the disk A U-shaped tube is connected to the disk and communicates with the hollow interior of the central tube. Two ends of the U-shaped tube respectively communicate with a space between the disk and the porous film. Air enters from the central tube and flows out from two ends of the U-shaped tube to generate bubbles via the porous film.
2001	Invention patented by Douglas Thai on October 14th, 2001. Abstract: A bubble producing device has at least one loop, with each loop having a cylindrical wall having an interior channel, a top edge and a bottom edge. A flared edge extends at an angle with respect to the cylindrical wall from a portion of the bottom edge. A connector is attached to the cylindrical wall of each loop at a location that is offset from the top edge of each loop.
Source: selected by the editor from original sources.

Bubble generating device

Invention: Bubble generating device