Hole-cutting saw
OwnerThomas G. Guzda, Jan Guzdainventors
Life of this patent
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Abstract
The invention relates to a pilot guide and hole-cutting saw system for cutting deep holes through an indeterminate depth of material while eliminating the problem of drift and wobble associated with the use of conventional hole saws. The system comprises a hole saw and a pilot guide, the pilot guide being comprised of a stop, a front guide, a rear guide, and a pilot pin. The pilot pin is created by fitting the central apertures of the stop and front guide over the second end of the pilot pin and by fitting the central aperture of a base portion of the rear guide over the second end of the pilot pin so that the end of the pilot pin terminates inside of the central aperture of the rear guide without passing entirely through the rear guide.
Claims23
A pilot guide and hole-cutting saw system for precisely cutting holes through a great thickness of material or layers of material, comprising:
- a circular, metallic hole saw with a plurality of spaced cutting teeth and including both inner and outer cylindrical surfaces surrounding a void and a closed drive end to which a power source is connected for providing the necessary power and torque to cut through a material or layers of material;
- and
- a pilot guide for aligning and stabilizing said hole saw when cutting through an indeterminate depth of material;
- wherein said pilot guide comprises:
- a front guide connected to a pilot pin;
- a rear guide connected to the pilot pin;
- and
- a stop connected to the pilot pin for spacing the front guide from the surface of the material being cut by the hole saw.
A method for cutting holes of great depth, wherein said method comprises the following steps:
- drilling a pilot hole into the surface of the material through which a hole is to be cut;
- inserting a first end of a pilot pin of a pilot guide into said pilot hole;
- coupling a stop with a second end of said pilot pin by coaxially aligning and slidably engaging a central aperture of the stop with said second end of the pilot pin and pushing the stop down the length of the pilot pin toward the first end of said pilot pin so that said stop contacts the surface of the material to be cut;
- coupling a front guide with the second end of said pilot pin by coaxially aligning and slidably engaging a central aperture of the front guide with said second end of the pilot pin;
- coupling a rear guide with the second end of said pilot pin by coaxially aligning and slidably engaging a central aperture of a base of the rear guide with said second end of the pilot pin so that said pilot pin stops and rests against the interior of the rear guide where said aperture ends;
- coaxially aligning and slidably engaging a hole saw over the pilot guide, said pilot guide being comprised of the pilot pin, stop, front guide, and rear guide assembly, so that said pilot guide is nested inside a cylindrical void inside of said hole saw;
- connecting a drive shaft to a rear side of said hole saw and inserting said drive shaft into the chuck of an electric drill or other power source to provide rotation and torque to the hole saw;
- and
- applying either manual or mechanical force to the hole saw to achieve firm contact between a plurality of teeth of said hole saw and the material until a hole of the desired depth is cut.
A hole-cutting saw and pilot guide system for precisely cutting holes through a great thickness of material or layers of material, comprising:
- means for cutting a hole with only one pass of said cutting means through the material through which said hole is to be cut;
- means for coaxially aligning said cutting means;
- and
- means for stabilizing said cutting means to allow precision cutting of said hole by eliminating drift and wobble of said cutting means.
Dependencies are inferred from the claim text.