Patent ID: 7021181

Claim:
A screwdriver comprising: a handle including a chamber formed therein, and includes a passage formed in a lower portion thereof and communicating with said chamber thereof, said handle including at least one slit formed in said lower portion thereof and communicating with said passage thereof, to form at least two blades, and including an outer thread formed in said lower portion thereof, and including an inclined surface formed in said at least two blades, said handle including at least one opening formed therein and communicating with said chamber thereof, a driving shank received in said passage of said handle and to be rotated and driven by said handle, a control ferrule threaded with said outer thread of said handle and engaged with said inclined surface of said at least two blades of said handle, to force said at least two blades to engage with and to grasp said driving shank to said handle, a magazine rotatably received in said chamber of said handle, and including a plurality of compartments formed therein and defined between ribs, for receiving screwdriver bits therein, and including at least one projection extended upwardly therefrom, and including a serrated outer surface provided thereon, said serrated outer surface of said magazine being exposed and reachable via said at least one opening of said handle, to allow said magazine to be rotated relative to said handle by users, a cover attached to said handle, to enclose said chamber of said handle, and to rotatably retain said magazine within said chamber of said handle, said cover including a passage formed therein for selectively aligning with either of said compartments or either of said ribs of said magazine when said magazine is rotated relative to said handle, and said cover including a plurality of depressions formed therein to selectively receive said at least one projection of said magazine, and to anchor and position said magazine relative to said handle at a selected angular position, and to maintain either of said compartments and said ribs of said magazine in alignment with said passage of said cover, the screwdriver bits being engageable into and disengageable from said compartments of said magazine when either of said compartments of said magazine is aligned with said passage of said cover by rotating said magazine relative to said handle, the screwdriver bits being retained within said handle and being prevented from being disengaged from said handle and said magazine when either of said ribs of said magazine is aligned with said passage of said cover, by rotating said magazine relative to said handle and by offsetting said compartments of said magazine from said passage of said cover, and means for biasing said magazine toward said cover, to bias said at least one projection of said magazine to engage into either of said depressions of the cover.