Abstract: A common socket device for memory cards is a common inserted base with an upper cover to offer a common space for receive a smart media card, a multimedia card, and a secure digital memory card. The common base may be inserted by two or three memory cards without a need of providing two or three kinds of different socket device. Therefore, contact points in the common socket device is reduced substantially, a less volume of the common socket device is obtained comparing to the gross volume of two or three conventional socket devices, and it enhance the convenience for the user.

Abstract: A drain garbage collector of the invention includes a frame, a top grate, a separator grate, and a collector grate. A plurality of passages are defined through the top grate let the roadside garbage pass through. The separator grate prevents garbage from flowing out of the garbage collector via filtering wastewater flow. Thereby, the garbage collector collects garbage and the collected garbage can be cleaned regularly to prevent inundation caused by jammed drain.