Boring or penetrating the earth – Processes
Patent
1996-08-23
1998-09-08
Neuder, William P.
Boring or penetrating the earth
Processes
175296, 175393, 175415, F21B 1036
Patent
active
058031871
ABSTRACT:
A down-hole pneumatic rotary-percussion hammer drilling apparatus is disclosed. The apparatus includes a drill string for progressively extending into a hole in the earth; an elongated housing connected to the drill string; an impact drill bit, rotationally coupled to the housing, having an engaging surface, an earth impacting surface, a channel, and a plurality of conduits extending from about an exit of the channel to an exit portion of the conduits; a piston within the housing for engaging the engaging surface; and a working fluid handler for energizing the piston with a working fluid. The impact drill bit is rotatable about a longitudinal axis, with the channel and the conduits providing a path of flow of the working fluid from the piston to the exit portions of the conduits. The exit portions are displaced from the longitudinal axis and extend generally downwardly and outwardly. The working fluid emerges from the exit portions and effects rotation of the impact drill bit about the longitudinal axis. Associated method and impact drill bit apparatus are also disclosed.
REFERENCES:
patent: 2218130 (1940-10-01), Court
patent: 2783971 (1957-03-01), Carle et al.
patent: 3576222 (1971-04-01), Acheson et al.
patent: 4273201 (1981-06-01), Garrett
patent: 4406332 (1983-09-01), Dismukes
patent: 4739845 (1988-04-01), Dennis
patent: 4911729 (1990-03-01), Rooker
patent: 4958691 (1990-09-01), Hipp
patent: 5029657 (1991-07-01), Mahar et al.
patent: 5305837 (1994-04-01), Johns
patent: 5305838 (1994-04-01), Pauc
patent: 5322136 (1994-06-01), Bui et al.
patent: 5435402 (1995-07-01), Ziegenfuss
Mildren, D., et al., Know Your Hammer, A DTH Drilling Perspective, Sandvik Rock Tools, Inc., pp. 1-16 (1991).
Houser Kirk D.
Neuder William P.
Silverman Arnold B.
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