Patent ID: 9233423
Filing Date: 2016-01-12
CPC Classification: B23B,B23Q,B25H,Y10T

Claim Text:
1. A hand-held drilling apparatus comprising: a carriage mounting plate having at least one guide rail, a drill carriage slidably mounted on the at least one guide rail, a means for driving the drill carriage in forward and reverse directions along the guide rail, and a drill motor mounted on the drill carriage for rotating a drill bit having an axis of rotation oriented parallel to the guide rail; a stationary plate guide mounted on the carriage mounting plate, a rear plate guide attached perpendicularly to the stationary plate guide, a movable plate guide slidably mounted to the rear plate guide, means to move the movable plate guide relative to the stationary plate guide in order to grip a workpiece between the plate guides, means to lock the movable plate guide in position when the workpiece is gripped, the stationary and movable plate guides being oriented perpendicularly to the axis of the drill bit, and a depth adjustment knob extending through the rear plate guide and perpendicularly to the axis of the drill bit in order to push against an edge of the workpiece to adjust the position of the axis of rotation of the drill bit relative to the edge of the workpiece; two handgrips mounted on the carriage mounting plate adjacent the stationary and movable plate guides such that the hand grips are oriented generally perpendicularly to the axis of rotation of the drill bit and generally parallel to the stationary and movable plate guides, wherein the operator will be oriented orthogonally relative to the axis of rotation of the drill bit; a laser distance sensor mounted on the carriage mounting plate for measuring the distance between the carriage mounting plate and a reference surface generally parallel to the axis of the drill bit, such that the axis of the drill bit may be located at a desired distance from the reference surface when multiple holes are drilled on spaced workpieces.