Boring or penetrating the earth – Below-ground impact members – Fluid-operated
Reexamination Certificate
2006-06-06
2008-12-23
Neuder, William P (Department: 3672)
Boring or penetrating the earth
Below-ground impact members
Fluid-operated
C175S417000
Reexamination Certificate
active
07467675
ABSTRACT:
A device is for channeling solids and fluids within a reverse circulating, fluid operated drill that has first and second ends, an axis extending between the ends, a casing and a piston. The casing has a bore extending between the drill ends and drive and valve chambers defined within the bore, the piston being movably disposed within the bore. The channeling device includes an elongated body disposeable within the casing bore so as to extend along the casing axis and through the piston. The body has a longitudinal axis, a first end locatable proximal to the drill first end, and a second end spaced from the first end and locatable proximal to the drill second end. A material transport passages extends axially between the two body ends and provides a path for moving solid materials through the drill. A fluid passage is configured to couple the valve and drive chambers.
REFERENCES:
patent: 3941196 (1976-03-01), Curington et al.
patent: 4706764 (1987-11-01), Hughes
patent: 4819746 (1989-04-01), Brown et al.
patent: 4921052 (1990-05-01), Rear
patent: 5085285 (1992-02-01), Elsby et al.
patent: 5154244 (1992-10-01), Elsby et al.
patent: 5301761 (1994-04-01), Fu et al.
patent: 5407021 (1995-04-01), Kane et al.
patent: 5685380 (1997-11-01), Purcell et al.
patent: 5778993 (1998-07-01), Moir
patent: RE36002 (1998-12-01), Elsby et al.
patent: 6035953 (2000-03-01), Rear
patent: 6209665 (2001-04-01), Holte
patent: 6386301 (2002-05-01), Rear
patent: 6550554 (2003-04-01), Gien
patent: 6702045 (2004-03-01), Elsby
patent: 7152700 (2006-12-01), Church et al.
patent: 2008/0029307 (2008-02-01), Green
Atlas Copco Secoroc LLC
Michael & Best & Friedrich LLP
Neuder William P
LandOfFree
Device for channeling solids and fluids within a reverse... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Device for channeling solids and fluids within a reverse..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device for channeling solids and fluids within a reverse... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4028872