Drill bit having trapezium-shaped blades

Details Drill bit having trapezium-shaped blades Drill bit having trapezium-shaped blades

1997-06-03

2000-02-08

Bagnell, David

Boring or penetrating the earth

Bit or bit element

Specific or diverse material

175428, 175429, 175393, E21B 1038

Patent

active

060218584

ABSTRACT:
A steel bodied PCD drag bit is disclosed having a plurality of blades integrally formed thereon, each blade having a bottom surface that includes an angular front section and rear section intersecting to form an apex, the front section having a plurality of sockets formed thereon to receive a plurality of cylindrical cutters elements, the rear section being substantially parallel to the cylindrical cutting.

REFERENCES:
patent: 4073354 (1978-02-01), Rowley et al.
patent: 4491188 (1985-01-01), Grappendorf
patent: 4499795 (1985-02-01), Radtke
patent: 4558753 (1985-12-01), Barr
patent: 4577706 (1986-03-01), Barr
patent: 4883132 (1989-11-01), Tibbitts
patent: 4898252 (1990-02-01), Barr
patent: 4949598 (1990-08-01), Griffin
patent: 4995887 (1991-02-01), Barr et al.
patent: 5222566 (1993-06-01), Taylor et al.
patent: 5332051 (1994-07-01), Knowlton
patent: 5383527 (1995-01-01), Azar

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