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Cutting element apparatuses, drill bits including same, methods of cutting, and methods of rotating a cutting element

  • US 8,061,452 B2
  • Filed: 10/22/2010
  • Issued: 11/22/2011
  • Est. Priority Date: 10/11/2005
  • Status: Active Grant
First Claim
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1. A rotary drill bit for drilling a subterranean formation, the rotary drill bit comprising:

  • a bit body; and

    a cutting element coupled to the bit body and structured to rotate in response to torque applied to the cutting element, the cutting element comprising;

    a first portion; and

    a second portion mechanically coupled to the first portion;

    wherein the first portion of the cutting element is structured to decouple from the second portion of the cutting element when a torque developed between the first and second portions exceeds a selected magnitude.

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