Cutting by use of rotating axially moving tool – Processes – Bit detachable
Reexamination Certificate
2007-07-03
2007-07-03
Howell, Daniel W. (Department: 3722)
Cutting by use of rotating axially moving tool
Processes
Bit detachable
C408S201000, C408S204000
Reexamination Certificate
active
11160580
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.
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text for Swedish patent 81021.
Guzda Jan
Guzda Thomas G.
Howell Daniel W.
Malin Haley & DiMaggio, P.A.
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