Rotary cone drill bit with improved cutter insert
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United States of America Patent
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Jun 6, 1995
Grant Date -
N/A
app pub date -
Mar 22, 1994
filing date -
Mar 22, 1994
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A cutter insert (34) is designed for mounting within a socket (48) bored in a roller cone cutter (10,12,14). The insert (34) includes a base (52) having a length (L2), a width (W2), and a depth (D), where the length (L2) differs substantially from the width (W2). The base (52) is sized to have an interference fit with the socket (48). A cutting tip (54) is integrally formed with the base (52) and protrudes outwardly from the socket (48) when the base (52) is mounted therein. The noncylindrical base (52) and socket (48) prohibit rotation of the insert (34) within the socket (48). Additionally, more inserts (34) with noncylindrical bases (52) can fit in a row (28-32, 36-46) than can cylindrical inserts having cylindrical bases and cutting tips of similar dimensions.
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