Patent ID: 6872036
Filing Date: 2005-03-29
Classification: B23B,B23C,B23Q,Y10T

Abstract:
1. An axial feed control system for a hand-held drill, said system comprising: a cutting tool extending in an axial direction; a drive for rotating the cutting tool about an axis offset from the tool axis; an axial positioning mechanism, including; a rear housing connected to said cutting tool; a front housing at least partially surrounding said cutting tool and configured to be non-rotatably attached relative to a workpiece by a bayonet socket; and a ring rotatably attached to one of said rear housing and said front housing, said ring being threadedly coupled to an other of said rear housing and said front housing such that rotation of said ring moves said cutting tool together with said rear housing in said axial direction relative to said front housing while maintaining said front and rear housings mutually non-rotatable; and a stroke length adjustment mechanism, including: a return mechanism configured for reversing a direction of axial movement of said cutting tool from a forward direction to a backward direction; a latch connected to said return mechanism, said latch being movable between a first position in which said return mechanism is not activated, and a second position in which said return mechanism is activated; and a projection having a position which varies with an axial position of said cutting tool, said projection being configured for engaging said latch to thereby move said latch from said first position to said second position.