Twist drill with reverse flutes
OwnerWayne C. Jarvisinventor
Life of this patent
Estimating the term…
Abstract
A twist drill comprising a shank section at a top of the drill and a body section at a bottom of the drill, the body section having two or more flutes which spiral downwardly in a first direction and terminate proximate a point, the drill having cutting lips formed by the flutes and operatively arranged to cut material when the drill is rotated in a second direction opposite that of the orientation of the spiral flutes.
Claims5
A twist drill comprising a shank section at a top of the drill and a body section at a bottom of the drill, said body section having two or more flutes which spiral downwardly in a first direction and terminate proximate a point, said drill having cutting lips formed by said flutes and operatively arranged to cut material when said drill is rotated in a second direction opposite that of the orientation of said flutes.
Dependencies are inferred from the claim text.