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US 2009/0267403 A1Published application
Resilient Pick Shank
AssigneeSchlumberger Technology Corporation
InventorsDavid R. Hall, Jeff Jepson, Gary Peterson
Life of this patent
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Abstract
In one aspect of the invention, a pick assembly comprises a pick shank press fitted within a bore of a pick holder. The pick comprises a pick head opposite the shank. The shank also comprises at least one longitudinal slot extending towards the pick head along the shank from a distal end of the shank. The slot allows the shank to resiliently collapse upon insertion into the bore while still allowing the shank to maintain a press fit while within the bore.
Claims15
A pick assembly, comprising:
- a carbide bolster supporting a diamond enhanced tip;
- the tip being bonded to the bolster at a forward end and a centralized cavity being formed on a rearward end of the bolster;
- the rearward end of the bolster also being bonded to a steel shank at a non-planar interface;
- wherein there is at least one void in the interface.
1 more element
Dependencies are inferred from the claim text.