Ring drill bit with improved drill core removal
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United States of America
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Issued Date -
Dec 5, 2024
app pub date -
Sep 28, 2022
filing date -
Sep 28, 2022
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Abstract
Ring drill bit including a drilling shaft and a ring segment (22) which is fastened by an underside to an end face of the drilling shaft and which has an inner lateral surface (26). The inner lateral surface (26) has an inner distance (B(φ, h)) from the longitudinal axis (23) perpendicular to the longitudinal axis (23) of the drilling shaft. The inner distance (B(φ, h)) varies in the plane perpendicular to the longitudinal axis (23) and has a first minimum value (Bmin,1), a first maximum value (Bmax,1), a second minimum value (Bmin,2) and a second maximum value (Bmax,2).
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