Cutting member for rotary drill bits
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United States of America Patent
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-
Apr 3, 1984
Grant Date -
N/A
app pub date -
Mar 24, 1982
filing date -
Apr 11, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A cutting member for rotary drill bits consists of a carrier member with a supporting face which consists of two component supporting faces adjoining one another in wedge-shape forming a front edge, and applied to each of the two component supporting faces is a supporting member together with a cutting layer which occupies the whole area. The cutting member which is wedge-shaped in its contours develops high drilling performances particularly in comparatively soft ground formations and is considerably cheaper than known wedge-shaped cutting members and renders possible an extensive variability in the formation of the supporting members together with the cutting layers and their arrangement on the carrier member.
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