Multi-sectional percussive drill bit assembly

Details Multi-sectional percussive drill bit assembly Multi-sectional percussive drill bit assembly

2008-06-24

2008-06-24

Wright, Giovanna C (Department: 3672)

Boring or penetrating the earth

Bit or bit element

Impact or percussion type

C175S057000, C175S382000, C175S413000

Reexamination Certificate

active

07389833

ABSTRACT:
A multi-sectional percussive drill bit assembly for drilling holes in earth formation primarily used in conjunction with a pneumatic percussive device. The drill bit assembly is comprised of an easily removable bit that is rotationally driven by a lug and pocket structure and axially limited in travel by means of retaining members.

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