Boring or penetrating the earth – With tool shaft detail – Helix or helically arranged structure
Patent
1996-04-10
1998-07-21
Tsay, Frank
Boring or penetrating the earth
With tool shaft detail
Helix or helically arranged structure
285330, 175394, F21B 17046, F21B 1722
Patent
active
057823103
ABSTRACT:
Drilling augers comprise a tubular housing having an outer circumferential surface, with helical flighting mounted on the outer surface to effect drilling. Opposite ends of each auger terminate in a socket end connector and a plug end connector, the plug end connector of a succeeding auger received within the socket end connector to provide a connection between the augers. A circumferentially extending gasket seal is provided between the end of the plug end connector and a circumferentially extending rim on the socket end connector to prevent fluids from outside of the augers from leaking into the passage through the augers, and to prevent drilling fluids in the passage from leaking out. Pins carried by the socket end connector engage apertures in the plug end connector to provide a connection between the augers when the drilling string is withdrawn. Plug seals are snap fitted into the apertures and are held therein by a circumferentially extending rim engaging a surface surrounding the apertures.
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