Patent ID: 8240960

Claim:
A depth stop for use with a drill having a drill bit extending therefrom for drilling a hole in a workpiece comprising: a) first tubular member, said first tubular member having a forward end closer to the workpiece when the drill is in use, and a rearward end closer to the drill, said first tubular member having grooves therein, and adapted to receive the drill bit of the drill; b) a second tubular member outside of said first tubular member threadably engaging said first tubular member, and having a forward end closer to the workpiece when the drill is in use, and a rearward end closer to the drill, said second tubular member having an internally threaded aperture extending outwardly from its rearward end; c) a lock screw having external threads adapted to be received by said threaded aperture of said second tubular member; and d) a sensing sleeve anti-rotational member having teeth extending axially therefrom and adjacent said lock screw, said sensing sleeve anti-rotational member and said lock screw having a spring therebetween, whereby rotational movement of said lock screw to a locked position causes axial movement of said sensing sleeve anti-rotational member until said teeth of said sensing sleeve anti-rotational member engage said grooves of said first tubular member, thereby locking said first tubular member in a fixed position relative to said second tubular member, and limiting the travel of the drill bit into the workpiece when the forward end of said first tubular member contacts the workpiece.