Boring or penetrating the earth – Cutter element laterally shiftable below ground – Cutter element shifted by fluid pressure
Reexamination Certificate
2005-11-01
2005-11-01
Neuder, William (Department: 3672)
Boring or penetrating the earth
Cutter element laterally shiftable below ground
Cutter element shifted by fluid pressure
C175S406000, C175S424000
Reexamination Certificate
active
06959774
ABSTRACT:
A drilling apparatus for earth boring operations is of the type having cutter blades mounted on a support body at the lower end of a drill string and includes a novel arrangement of fluid bore sections for delivering fluid under pressure into fluid discharge passages in each of the blades and a bifurcated pivotal mounting portion on the body which enables the bore sections to supply fluid to the cutter blades through a ball joint on the pivotal axis. Modified forms of invention are specifically designed for cutter blades which are intended to perform reaming operations but include the fluid delivery system as well as an extended delivery system for delivering fluid under pressure to other tools in the drill string.
REFERENCES:
patent: 2203998 (1940-06-01), O'Grady
patent: 2814463 (1957-11-01), Kammerer, Jr.
patent: 3196961 (1965-07-01), Kammerer
patent: 3552509 (1971-01-01), Brown
patent: 3554304 (1971-01-01), Link et al.
patent: 3656564 (1972-04-01), Brown
patent: 3684041 (1972-08-01), Kammerer, Jr.
patent: 4565252 (1986-01-01), Campbell et al.
patent: 5271472 (1993-12-01), Leturno
patent: 5385205 (1995-01-01), Hailey
patent: 5494121 (1996-02-01), Nackerud
patent: 6454024 (2002-09-01), Nackerud
patent: 6691803 (2004-02-01), Nackerud
patent: 6695074 (2004-02-01), Nackerud
patent: 2002/0050409 (2002-05-01), Nackerud
Neuder William
Reilly John E.
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