Patent ID: 6582164
Filing Date: 2003-06-24
Classification: B23B,Y10S,Y10T

Abstract:
A drill comprising:a drill body having a main body portion, a thread, and a reduced diameter portion between said main body portion and said thread; and a removable tip having a cutting tip and a thread that is adapted to engage said thread of said drill body, wherein one said thread is an internal thread in a connection bore and the other one of said threads is an external thread extending from a shaft, said internal thread being defined by a front face, a rear face, and a radial surface extending between said front face and said rear face, said external thread being defined by a front face, a rear face, and a radial surface that extends between said front face and said rear face, and said shaft being adapted to be inserted in said connection bore and rotated to engage said internal and external threads.