Cutlery – Cutting tools – Saw
Patent
1989-09-25
1991-03-19
Watts, Douglas D.
Cutlery
Cutting tools
Saw
83852, B23D 4900, B27B 3302
Patent
active
049999150
ABSTRACT:
A saw blade comprises a support member having at least one edge, and, spaced along that edge, a series of slots in each of which is secured a saw tooth and in which a portion of the tooth is located within the slot and a further portion extends beyond the slot to overlie a portion of a surface of the support member.
Part of the slot and a part of the tooth may be sector-shaped, each slot may include an entry portion with side edges and a base edge or edges, and the tip of the sector-shaped part is located centrally of the base edge, the sector-shaped part communicating with the entry portion via an opening in the base edge whose sides are rounded and which are a tight fit with a mating portion of a tooth, the remainder of a tooth fitting into the slot with some clearance.
The invention also extends to a tooth for the saw blade, the tooth having a cutting portion and a body portion to locate in said slot.
According to a further aspect of the invention, a cutting blade has hardened cutting teeth located in the slot in the blade, there being a support edge or edges spaced from the cutting edge of the blade and substantially parallel thereto which engages a support surface on a guide for the blade.
The support edge(s) may be provided by a strip fixed to the blade or by edges on the teeth remote from their cutting portion which project beyond the surface of the blade.
REFERENCES:
patent: 4640172 (1987-02-01), Killmann et al.
patent: 4690024 (1987-09-01), Chaconas
patent: 4798001 (1989-01-01), Grossmann et al.
Grossmann Horst
Jackson Brian K.
Bartlett Edward D. C.
Black & Decker Inc.
Dearing Dennis A.
Watts Douglas D.
Yocum Charles E.
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