Drill bit with improved removal of the drill core
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United States of America
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Issued Date -
Dec 19, 2024
app pub date -
Sep 28, 2022
filing date -
Sep 28, 2022
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Abstract
Drill bit (20) including a drilling shaft and a cutting portion having a first drilling segment (23-1) and a second drilling segment (23-2). The first drilling segment (23-1) has a first inner lateral surface (28-1) with a first inner distance (B1(φ), h)), and the second drilling segment (23-2) has a second inner lateral surface (28-2) with a second inner distance (B2(φ, h)) from the longitudinal axis (24) of the drilling shaft. The first inner lateral surface (28-1) is formed as a portion of a first inner cone (34-1) which tapers in the direction of a first upper side (32-1) opposite to the underside (31-1) of the first drilling segment (23-1).
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