Cutting – Tool or tool with support – Toothed blade or tooth therefor
Patent
1986-12-01
1988-06-14
Schran, Donald R.
Cutting
Tool or tool with support
Toothed blade or tooth therefor
83839, 83840, B27B 3308
Patent
active
047503963
ABSTRACT:
The present invention is a rotary tool cutter tooth having a readily replaceable cutting portion and a tool employing the tooth. The tooth consists of an elongated shank for mounting the tooth on the tool body with a cutter element being bolted to the forward end of the shank. Preferably the back face of the cutter element is vertically grooved to receive the forward end of the shank so that the two are precisely aligned and any forces which tend to rotate the cutter element during use are resisted. The face of the shank that adjoins the cutter element may further be provided with a negative or inverted step which engages a corresponding step across the groove of the cutter element. These steps interlock to resist forces which would tend to translate the cutter element radially outward when in use. The cutter element may be made of a tool steel or other hard alloy, whereas the shank is typically formed from a mild steel.
REFERENCES:
patent: 4563929 (1986-01-01), Ringlee et al.
Gaddis Paul G.
Ringlee David R.
Gehr Keith D.
Schran Donald R.
Weyerhaeuser Company
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