Data processing: measuring – calibrating – or testing – Measurement system – Orientation or position
Reexamination Certificate
2007-04-03
2007-04-03
Barbee, Manuel L (Department: 2857)
Data processing: measuring, calibrating, or testing
Measurement system
Orientation or position
C702S159000, C356S138000, C356S400000
Reexamination Certificate
active
11238692
ABSTRACT:
An apparatus includes a strap that is positional about a drill and maintains a static relationship therewith while a drill bit and chuck rotate. The apparatus includes a plurality of light sources and sensors. The light sources and sensors face forwardly and emit corresponding light arrays aligned parallel to the drill bit and measure a linear distance to a target surface respectively. Each light source defines a reflection that has a unique diameter when the drill is not perpendicular, notifying the user to adapt the drill such that identical diameters are reflected on the work surface. A mechanism communicates an output signal to a display screen so that a visual representation of the drill bit location becomes displayed on a display screen. The drill bit is aligned perpendicular to the work surface when the light sources are equidistantly spaced from the work surface.
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