Saw tooth with finishing protrusion

• US 6,543,326 B2
• Filed: 06/13/2001
• Issued: 04/08/2003
• Est. Priority Date: 06/13/2001
• Status: Expired due to Fees

• Current Assignee: Ralph Carl Bishop
• Original Assignee: Ralph Carl Bishop
• Inventors: Bishop, Ralph Carl
• Primary Examiner(s): Banks, Derris H.
• Assistant Examiner(s): WILLIAMS, JAMILA O
• Application Number:
  US09/880,650
• Publication Number:
  US 20030000362A1
• Time in Patent Office: 664 Days
• Field of Search: 838/35, 835/92, 125/15
• US Class Current: 83/835
• CPC Class Codes: B23D 61/021 Types of set; Variable teeth, e.g. variable in height or gullet depth: Varying pitch; Details of gullet
• CPC Class Codes: Y10T 83/8791 Tool mounted on radial face of rotor
• CPC Class Codes: Y10T 83/9319 Toothed blade or tooth therefor
• CPC Class Codes: Y10T 83/9377 Mounting of tool about rod-type shaft

Abstract

A protrusion on the side of the saw tooth rubs against the newly cut kerf surface as the tooth cuts. Pressure, friction and friction-generated heat are produced through this rubbing action. The confluence of this pressure, friction, and heat, performs a polishing action against the newly cut kerf surface.

Claims

1. In the process of a saw tooth with a sharp forward positioned cutting edge advancing into the material addressed with a scratch scrape action, the improvement wherein the side of the tooth having a bevel edged flat surfaced protrusion distinct from said tooth'"'"'s cutting edge, with

said protrusion projecting slightly further laterally from the center plane of the saw blade than a most lateral projection of the sharp forward positioned cutting edge, with

said protrusion projecting laterally far enough for its surface of engagement, wherein said protrusion has a working surface, to generate a rubbing action against the kerf surface that has been freshly cut by the forward positioned cutting edge of the saw tooth, but not projecting far enough laterally to cut into the kerf, with

said rubbing action of said protrusion'"'"'s working surface generating pressure, friction, and friction-generated heat, against said kerf surface, whereby

said protrusion serves as a finishing element rendering said kerf surface smoother, flatter, and denser.

2. A protrusion as recited in claim 1 in which the working surface is interspersed with one or more concave depressions.

3. A protrusion as recited in claim 1 in which the working surface is impregnated with an abrasive material.

4. A protrusion as recited in claim 1 in which the protrusion is an elemental part of the saw tooth created with the tooth as it was machined.

5. A protrusion as recited in claim 1 in which the protrusion is not of the same material as the saw tooth.

6. A protrusion as recited in claim 1 in which the protrusion is attached to the saw tooth by means selected from the group consisting of welding, and brazing, and riveting, and screwing.

7. A protrusion as recited in claim 1 in which its working surface has been submitted to a treatment selected from the group consisting of plating, and polishing, and case hardening.