Metal tools and implements – making – Blank or process – Drill
Patent
1985-06-12
1986-06-03
Parker, Roscoe V.
Metal tools and implements, making
Blank or process
Drill
419 6, 419 8, 419 48, B22F 708
Patent
active
045922527
ABSTRACT:
A roller bit cutter comprises a tough, metallic, generally conical and fracture resistant core having a hollow interior, the core defining an axis; an annular, metallic, radial bearing layer carried by the core at the interior thereof to support the core for rotation, the bearing layer extending about the core axis; a wear resistant outer metallic layer on the exterior of the core; metallic teeth integral with the core and protruding outwardly therefrom, at least some of the teeth spaced about the axis; and an impact and wear resistant layer on each tooth to provide hard cutting edges as the bit cutter is rotated about the core.
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CDP, Ltd.
Haefliger William W.
Parker Roscoe V.
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