Copyright © Philip M. Parker, INSEAD. Terms of Use.

| Year | Description |
| 2000 | Invention patented by Tsun Shin Chang and Shih Ching Chuang on June 31th, 2000. Abstract: A bubble generating apparatus includes a hollow shell having a plurality of bottom inlets through and a side outlet, a screw rod longitudinally mounted in the shell, a baffle threaded onto one end of the screw rod and suspended inside the shell above the bottom inlets, the baffle having a plurality of smoothly arched bottom notches for baffling intake flows of high pressure liquid to produce bubbles, and a knob fastened to one end of the screw rod outside the shell and rotated to move the baffle along the screw rod relative to the bottom inlets. |
| Source: selected by the editor from original sources. | |
Copyright © Philip M. Parker, INSEAD. Terms of Use.