Saw tooth attack face and edge structure

Details Saw tooth attack face and edge structure Saw tooth attack face and edge structure

1994-03-29

1996-12-03

Rada, Rinaldi I.

Cutting

Tool or tool with support

Toothed blade or tooth therefor

83853, 83854, B27B 3308

Patent

active

055796745

ABSTRACT:
A square saw tooth having four cutting edges of the type which is rotatable about its axis on a saw disc to present a fresh cutting edge when the radially outermost edge wears out has carbide wear plates covering the high wear areas of its attack face and providing its cutting edges. A wear plate is provided at each corner of the attack face, and each wear plate has a flat rear surface for attachment to the tooth body and a front surface of a complex shape, having plateau surface areas at the corners, where the plates are thicker, and curved surfaces which recede from the plateau areas toward the interior of the attack face, so that the plate recedes in thickness away from the plateau area. This construction helps provide more uniform wear over the surfaces and edges of the attack face for a more efficient consumption of the wear plates.

REFERENCES:
patent: 1037146 (1912-08-01), Hunter
patent: 3818561 (1974-06-01), Montana et al.
patent: 4932447 (1990-06-01), Morin
patent: 5131305 (1992-07-01), MacLennan
patent: 5203649 (1993-04-01), Katbi et al.
patent: 5205199 (1993-04-01), MacLennan
patent: 5207538 (1993-05-01), Satran
patent: 5207748 (1993-05-01), Katbi et al.
patent: 5261306 (1993-11-01), Morey et al.
Applicant'Exhibit 1-a Polaroid of saw tooth (undated).
Applicant's Exhibit 2-a Polaroid of saw tooth (undated).
Drawing containing Figs. P1-P5 of saw tooth admitted prior art. (undated).

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