Rotary drill bits

Boring or penetrating the earth – Bit or bit element – Plural separable cutter elements

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Details

175375, 407 40, 407 48, E21B 1046

Patent

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043824773

ABSTRACT:
In a rotary drilling bit having preform cutting elements, a partial or total structural discontinuity is disposed between the elements and the underlying structure or within the underlying structure to reduce the bending strain upon the preform cutting elements. In this way there is a reduction in the fracture or damage of preform cutting elements.

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