Overlapping insert for cutting tooth
OwnerCharles D. MacLennan, Nick Palfyinventors
Life of this patent
Estimating the term…
Abstract
A saw tooth for a circular saw for a feller includes, in one embodiment, a square saw tooth body having a multi-faceted shape to be mounted on a holder and for receiving inserts fastened to inwardly sloping seating surfaces on the cutting end of the tooth body. The inserts are provided with cutting tips and cutting edges to form angled cutting edges about the entire periphery of the cutting end of the tooth body. Notches are made in the seating surfaces and inserts in order to permit adjacent inserts to overlap one another, such that the angled cutting edges are strengthened at their junctions, thereby reducing damage of the inserts and improving the cutting performance of the saw tooth.
Claims9
A saw tooth for a circular saw blade comprising:
- a multi-faceted shaped body having a mounting end, and a larger cutting end and a plurality of sides extending between the mounting end and the cutting end, the sides forming corners at the cutting end where they meet;
- a seating surface on the cutting end at each of the corners, each seating surface sloping inwardly and defined between two edges diverging from a corresponding corner;
- a hardened insert fastened to each seating surface, forming a single cutting tip with a pair of receding cutting edges;
- and
- each of the seating surfaces and each of the inserts including a seat-notch and an insert-notch, respectively, the seat-notch and the insert-notch in combination forming a groove for receiving a section of an adjacent insert so that adjacent inserts overlap one another and provide angled cutting edges about the periphery of the cutting end.
A saw tooth for a circular saw blade comprising:
- a tooth body of frusto-pyramidal configuration, the tooth body having a cutting end, a mounting end, and four flat sides extending therebetween and forming four corners at the cutting end;
- a flat seating surface on the cutting end at each of the corners, each flat seating surface sloping inwardly and being defined between two straight edges diverging from a corresponding corner;
- and
- a substantially triangular, hardened insert fastened to each seating surface, forming a cutting tip with a pair of receding cutting edges;
- and
- each of the seating surfaces and each of the inserts including a seat-notch and an insert-notch, respectively, the seat-notch and the insert-notch in combination forming a groove for receiving a section of an adjacent insert to permit overlapping of adjacent inserts, thereby providing angled cutting edges about the periphery of the cutting end.
Dependencies are inferred from the claim text.