Boring or penetrating the earth – Bit or bit element – Specific or diverse material
Reexamination Certificate
2011-07-05
2011-07-05
Stephenson, Daniel P (Department: 3676)
Boring or penetrating the earth
Bit or bit element
Specific or diverse material
Reexamination Certificate
active
07971663
ABSTRACT:
PDCs including a barrier receptacle that holds a thermally-stable PCD body at least partially within a substrate, and methods of fabricating such PDCs are disclosed. A PDC comprises a substrate including a substrate recess formed therein, a barrier receptacle defining a receptacle recess, and a thermally-stable PCD body including an upper surface, a back surface, and at least one lateral surface. The barrier receptacle is received by the substrate recess. The thermally-stable PCD body is at least partially received by the receptacle recess. Other applications include utilizing the disclosed PDCs in various articles and apparatuses, such as rotary drill bits.
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Stephenson Daniel P
US Synthetic Corporation
Workman Nydegger
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