Rotary boring tool alignment and depth indication system
OwnerJohn Cerwininventor
Life of this patent
Estimating the term…
Abstract
A system for a rotary boring tool that enables a user of the tool to align the tool perpendicularly with respect to a work surface of a work piece. In one embodiment the system enables a user to gauge distance or depth drilled into the work piece.
Claims10
An alignment and depth indication system with respect to a tool having a rotating means for rotating a drill bit, said rotating means having a longitudinal axis, comprising:
- first and second light sources;
- and
- a means for operably coupling said first and second light sources to said rotating means, whereby wherein said first and second light sources respectively produce first and second light beams, wherein said first light beam is projected at an adjustable acute angle with respect to said longitudinal axis, and said second light beam is projected parallel to said longitudinal axis,
- whereupon rotation of said rotating means and when said rotating means is held perpendicular to a work surface of a work piece said first and second beams of light project inner and outer concentric circles of light on the work surface thereby confirming that the tool is being held at a perpendicular angle with respect to the work surface,
- wherein said acute angle can be selected such that said first light beam defines the outer concentric circle of light, and wherein the distance between the outer and inner circles of light corresponds to a desired drill depth,
- whereupon drilling into the work surface the desired drill depth is achieved when the outer concentric circle of light merges with the inner circle of light to produce a single circle of light on the work surface.
A tool having a rotating means for rotating a drill bit attached to a cutting-tool holder, said rotating means having a longitudinal axis, wherein said tool is used to drill holes in a work surface of a work piece, said tool comprising:
- first and second light sources;
- and
- a means for operably coupling said first and second light sources to said rotating means such that said first and second light sources are located in the same transverse plane with respect to the longitudinal axis, wherein said first and second light sources respectively produce first and second light beams, wherein said second light beam is projected parallel to said longitudinal axis, wherein during normal operation of said alignment system the first and second light beams combine with a work surface to create a 45°-45°-90° right angle triangle, wherein said means for operably coupling said first and second light sources to said rotating means is a disk having a means for producing air flow to blow drill bit debris away from the tool, and
- whereupon rotation of said rotating means and when said rotating means is held perpendicular to a work surface of a work piece said first and second beams of light project inner and outer concentric circles of light on the work surface thereby confirming that the tool is being held at a perpendicular angle with respect to the work surface.
A tool having a rotating means for rotating a drill bit, said rotating means having a longitudinal axis, said tool comprising:
- first and second light sources;
- and
- a means for operably coupling said first and second light sources to said rotating means, whereby wherein said first and second light sources respectively produce first and second light beams, wherein said first light beam is projected at an acute angle with respect to said longitudinal axis, and said second light beam is projected parallel to said longitudinal axis,
- whereupon rotation of said rotating means said first and second light beams project first and second circles of light on a work surface such that when the drill bit of the tool is perpendicular to the work surface the diameters of said first and second circles of light are equal in size and therefore overlap thereby confirming to an operator that the tool is drilling perpendicularly with respect to the work surface.
Dependencies are inferred from the claim text.