Patent ID: 7507149
Filing Date: 2009-03-24
Classification: B24B

Abstract:
1. A drill bit dresser for a twist drill having an elongated, generally cylindrical body with a rear shank end, adapted to being held in a chuck, and a pointed leading end, said drill bit body having two helical channels extending substantially the length of the body and each terminating in a drill bit face, and angling up to a point forming the drill bit leading end, said drill bit faces providing drill bit cutting edges, comprising: a dresser body having a front, rear, left side, right side, top, and bottom, said front, rear, sides, top and bottom defining a hollow dresser body interior, further comprising: a holding clamp slidably joined to the dresser body and having a front wall, rear wall, left side, right side, top, and bottom, said front, rear, sides, top and bottom defining a hollow holding clamp interior, wherein said holding clamp front wall has a cross bar adjacent the holding clamp top and extending from left side to right side, wherein said holding clamp front wall has a generally rectangular aperture formed centrally therein below the holding clamp front wall cross bar, wherein the holding clamp rear wall has a cross bar adjacent the holding clamp top and extending from left side to right side, said rear wall cross bar having an inverted “V” shaped groove facing downward toward the holding clamp bottom, wherein the holding clamp rear wall has a generally rectangular aperture formed centrally therein and extending from the rear wall cross bar to the holding clamp bottom, wherein the holding clamp interior has a protrusion formed on the holding clamp bottom, wherein a compression spring having two ends is inserted into the holding clamp interior and fitted, at one end, over the holding clamp interior bottom protrusion, the other spring end being fitted over the dresser body, bottom aperture well protrusion; and a sanding shoe pivotally attached to the dresser body, said sanding shoe having a front, an open rear, left side, right side, top, and bottom, said front, rear, sides, top and bottom defining a hollow sanding shoe interior, wherein the sanding shoe has an elongated sleeve formed at the junction of the sanding shoe front and right side, said sanding shoe sleeve slidably fitted over and engaging the dresser body pin.