| 摘要 |
A reversible drill/driver tool for use with power drills. The tool having a hollow cylindrical socket (12) that at one end has a drive shank (14) for insertion into a chuck of a powered drill, and, at the opposite end, has a polygonally shaped opening (16) therein for receiving a correspondingly shaped, two-ended, reversible tool assembly (318). This tool assembly is sized to slide within the hollow socket, and has a drill bit at one end, and, at the other end, a polygonally shaped opening for accepting a screw driver bit having a shank with a polygonal cross section. The tool assembly further has a cylindrical hollow retractable sleeve (324) located in surrounding relation to the drill bit and retractable into the assembly against a biasing means (330), the sleeve having a beveled distal end (336) for centering the drill bit in a pre-drilled hole. <IMAGE> |
