Patent ID: 8347509

Claim:
A hand-held tool system comprising: an elongated body having a handle portion and a tool end configured to receive functionally different first and second interchangeable user removal tool cartridges, each tool cartridge comprising a cartridge assembly of: (a) a tool bit, (b) a tool bit holder that securely holds the tool bit fixed relative to the holder, (c) a retractable tool bit cover coupled to the tool bit holder and biased toward a closed position when the tool bit is not in use and when the cartridge is not coupled to the elongated body, and (d) a housing securely coupled to the tool bit holder and having a fastener configured to releasably fasten the tool cartridge to the tool end of the body; and wherein the tool bit cover mechanically engages with a trigger disposed on the elongated body, where actuation of the trigger unlocks the cover and allows the cover to move freely relative to the tool bit holder from a closed position covering the tool bit to an open position that exposes the tool bit for use.