Shank assembly
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United States of America Patent
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Aug 30, 2011
Grant Date -
Mar 20, 2008
app pub date -
Nov 29, 2007
filing date -
Aug 11, 2006
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In one aspect of the invention, a pick comprises a carbide bolster disposed intermediate an impact tip and a shank assembly. The impact tip comprises a superhard material bonded to a carbide substrate, and the tip is bonded to the bolster opposing a base of the bolster. The shank assembly comprises a central axis, a first end that protrudes into a cavity formed in the base of the bolster, and also an inducible attachment mechanism disposed proximate the first end. The inducible attachment mechanism is adapted to attach the shank assembly to the carbide bolster and restrict movement of the shank assembly with respect to the carbide bolster. The attachment mechanism may restrict movement of the shank assembly in a direction parallel to the central axis.
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