Cutting – Tool or tool with support – Toothed blade or tooth therefor
Reexamination Certificate
2001-06-13
2003-04-08
Banks, Derris H. (Department: 3712)
Cutting
Tool or tool with support
Toothed blade or tooth therefor
C083S592000
Reexamination Certificate
active
06543326
ABSTRACT:
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH AND DEVELOPMENT
Not applicable
REFERENCE TO A MICROFICHE APPENDIX
Not applicable
BACKGROUND OF THE INVENTION
Saw teeth, the cutting instruments at the leading edges of saw blades, serve only to cut into the material addressed. The teeth, in motion with the blade, through a series of controlled superimposed scratches and scrapes, generate a cutting action. The newly cut kerf surfaces are not subjected to any finishing treatment by the saw teeth. The saw teeth create kerfs no smoother than their scratch scrape action allows.
Until my invention I have not heard of, or seen, or found a record of saw teeth with design elements giving them the means to polish as well as cut.
BRIEF SUMMARY OF THE INVENTION
In accordance with the present invention, the configuration of the saw tooth would include a protrusion on the side of the tooth nearest to the kerf. The prior art cutting edge of the tooth performs a conventional cutting action. The protrusion at the side of the tooth simultaneously rubs against the newly cut kerf surface. This rubbing action generates pressure, friction, and friction-generated heat, against the newly cut kerf surfaces. The confluence of pressure, friction, and heat, has a polishing effect that produces flatter smoother and denser kerf surfaces than could be produced by the teeth's scratch scrape action alone.
REFERENCES:
patent: 3092094 (1963-06-01), Griffin et al.
patent: 4267814 (1981-05-01), Benson et al.
patent: 5184597 (1993-02-01), Chiuminatta et al.
patent: 5441033 (1995-08-01), Chiuminatta et al.
patent: 5794503 (1998-08-01), Asada
Banks Derris H.
Williams Jamila
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