Drill bit with adjustable cutters

Details Drill bit with adjustable cutters Drill bit with adjustable cutters

2009-02-26

2011-11-22

Thompson, Kenneth L (Department: 3676)

Boring or penetrating the earth

Bit or bit element

Specific or diverse material

C175S381000, C175S382000

Reexamination Certificate

active

08061455

ABSTRACT:
A drill bit is provided that in one embodiment may include a blade profile having a cone section and one or more cutters on the cone section configured to retract from an extended position when an applied load on the drill bit reaches or exceeds a selected threshold. The drill bit is less aggressive when the cutters are in the retracted position compared to when the cutters are in the extended position.

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