Boring or penetrating the earth – Below-ground impact members – Fluid-operated
Patent
1999-01-27
2000-12-05
Perruto, Robert E.
Boring or penetrating the earth
Below-ground impact members
Fluid-operated
173 13, 173 73, E21B 414
Patent
active
061553611
ABSTRACT:
A hydraulic reciprocating piston hammer percussion drill includes an elongated piston hammer having opposed reduced diameter shank portions and disposed in a cylinder for reciprocating movement in response to pressure fluid acting continuously on one transverse face of the piston hammer and in response to valving of pressure fluid alternately to an opposed piston face of the piston hammer by a tubular sleeve valve which is disposed in sleeved relationship around the piston hammer between a piston portion of the piston hammer and an impact blow receiving bit. The tubular sleeve valve is provided with ports which communicate with high pressure and fluid exhaust ports in the piston hammer to effect reciprocation of the sleeve valve and of the piston hammer to deliver repeated impact blows to the bit. The bit may be configured to have a major portion of a transverse face disposed at an acute angle with respect to a plane normal to the bit and drill axis to allow directional drilling when the bit receives impact blows without being rotated. Retractable or fixed stabilizer or guide shoe members may be mounted on the exterior of the drill cylinder to aid in centering the drill in the drillhole or allow lateral deflection of the drill to accomplish directional drilling.
REFERENCES:
patent: 3896889 (1975-07-01), Bouyoucos
patent: 3903972 (1975-09-01), Bouyoucos et al.
patent: 4006783 (1977-02-01), Granholm
patent: 4022108 (1977-05-01), Juvonen
patent: 4044844 (1977-08-01), Harris et al.
patent: 4084486 (1978-04-01), Juvonen
patent: 4150603 (1979-04-01), Etherington
patent: 4474248 (1984-10-01), Musso
patent: 4646854 (1987-03-01), Arndt et al.
patent: 4660658 (1987-04-01), Gustafsson
patent: 4828048 (1989-05-01), Mayer et al.
patent: 5014796 (1991-05-01), Gustafsson
patent: 5107944 (1992-04-01), Gustafsson
patent: 5680904 (1997-10-01), Patterson
patent: 5715897 (1998-02-01), Gustafsson
LandOfFree
Hydraulic in-the-hole percussion rock drill does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Hydraulic in-the-hole percussion rock drill, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydraulic in-the-hole percussion rock drill will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-952628