Drilling device and method for producing undercut holes

Details Drilling device and method for producing undercut holes Drilling device and method for producing undercut holes

2007-03-13

2007-03-13

Gay, Jennifer H. (Department: 3672)

Boring or penetrating the earth

Bit or bit element

Rolling cutter bit or rolling cutter bit element

C175S082000, C175S321000, C175S408000, C408S236000, C082S001200

Reexamination Certificate

active

10798973

ABSTRACT:
A drilling device for producing undercut holes. The drilling device includes a drilling tool having an axis of rotation and a cutting portion arranged such that the cutting portion drills a hole with a longitudinal axis that is radially offset with respect to said axis of rotation and a centering device operable to apply a lateral force to said drilling tool for moving said axis of rotation towards said longitudinal axis to cause said cutting portion to form an undercut in a said hole.

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