Sonic drill

Boring or penetrating the earth – With seismic shock generating

Reexamination Certificate

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Details

C173S142000

Reexamination Certificate

active

10522104

ABSTRACT:
A sonic drilling apparatus having a work piston within a cylinder chamber to provide a vibratory force through the alternate application of fluid under pressure into the bore above and below the piston in a manner that the piston will be forced to reciprocate within the bore. The cylinder chamber includes an inlet gallery to allow fluid under pressure to pass into the bore above a first face of the work piston and an exhaust gallery to allow fluid to escape from the bore below the second face of the work piston. A relief bypass is provided to prevent excessive build up of pressure in the bore during the reciprocating movement of the work piston.

REFERENCES:
patent: 2763060 (1956-09-01), Swanson
patent: 2821962 (1958-02-01), Swanson
patent: 3375884 (1968-04-01), Bodine, Jr.
patent: 3379263 (1968-04-01), Bodine, Jr.
patent: 3680442 (1972-08-01), Kanning
patent: 3736843 (1973-06-01), Leibundgut
patent: 4308924 (1982-01-01), Boguth
patent: 4527637 (1985-07-01), Bodine
patent: 4836299 (1989-06-01), Bodine
patent: 5209564 (1993-05-01), Manci et al.
patent: 5222425 (1993-06-01), Davies
patent: 5392865 (1995-02-01), Piras
patent: 5417290 (1995-05-01), Barrow
patent: 5549170 (1996-08-01), Barrow
patent: 5562169 (1996-10-01), Barrow
patent: 5806608 (1998-09-01), DuBois
patent: 5884713 (1999-03-01), Shinohara et al.
patent: 6378951 (2002-04-01), Bouyoucos et al.
patent: 2345931 (2000-07-01), None
patent: 01/83933 (2001-11-01), None

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