The Boeing Company
Bit puller

Abstract:

A bit puller incorporates an inner element with a longitudinal axis and having a central shaft, a base with external threads and an engagement mechanism internal to the inner element adapted to engage a drill bit. An outer element is concentric with the inner element and has a foot portion for engaging a work piece. Internal threads in the outer element are adapted to engage the external threads of the base wherein rotation of the inner element with respect to the outer element withdraws the inner element along the longitudinal axis.