Abstract: A drill includes: a drill housing having a chuck collar of the drill made as a polygonal prism or a cylindrical collar having at least a secant flat surface formed thereon, a central drilling tool axially mounted in the drill housing, and a sleeve member having a hollow bore portion centrally formed through the sleeve member, having a coupling adapter formed on a proximal end of the sleeve member concentrically detachably secured to the chuck collar of the drill housing and having a screw driver member detachably mounted on a distal end of the sleeve member, whereby upon coupling of the sleeve member secured with the screw driver member onto the chuck collar of the drill, the hollow sleeve member on the drill will encase the central drilling tool previously axially mounted in the drill housing without first dismantling the central drilling tool for convenient replaceable uses of the drill.

Abstract: A toilet paper case includes a generally U-shaped housing which has a base mounting segment and two side segments. The housing is opened at the top, front and bottom sides thereof. The side segments are formed in the upper end portions thereof with open-ended vertical slide slots in which two ends of a reel are received slidably. A generally L-shaped cover plate is hinged to the front end portions of the side segments and has a generally horizontal portion covering the top side of the housing, and a generally vertical portion covering the front side of the housing. The rear end of the cover plate rests on the upper end of the base mounting segment and cannot be turned down. The cover plate has a forked lower end which includes serrated outer and inner edges for cutting a roll of toilet paper single handedly while mounted rotatably in the housing.

Abstract: A toilet paper case comprises a U-shaped housing, a curved cover plate hinged to the housing and a shaft for carrying a reel of toilet paper. The curved cover plate is provided with a forked end which has an inner toothed edge and an outer toothed edge. The inner toothed edge may be an edge with a series of sharp teeth, needles, or bumps or a rough edge face to engage with the paper so as to limit the unreeling of the paper, and the outer toothed edge includes sharp teeth to cut the paper. The cover plate is normally biased to an open position and a tongue-and-hole engagement means is provided to lock the cover plate in a closed position.

Abstract: An extension cord winding device includes: a frame body integrally formed with an upper frame and a lower frame; an extension cord having a plug at one end and a terminal socket at the other end uniformly wound around the upper frame; and a relay socket electrically connected at a middle place of the extension cord. The upper frame includes: a relay-socket supporting seat fixed on a top surface; a plurality of corrugated positioning grooves, together with a plurality of cord grips, which are located at each side of the upper frame; and a terminal-socket receiving chamber located at an end portion. The lower frame includes a plurality of cord holding members provided on each side, a plurality of supporting struts integrally formed at four corners, and a plurality of stabilizing angle plates movably connected to the supporting struts.