Boring or penetrating the earth – With above-ground means for handling drilling fluid or cutting – Fluid or cuttings directing or receiving means engaging bore...
Reexamination Certificate
2006-03-14
2006-03-14
Gay, Jennifer H (Department: 3672)
Boring or penetrating the earth
With above-ground means for handling drilling fluid or cutting
Fluid or cuttings directing or receiving means engaging bore...
C175S066000, C175S171000, C299S012000
Reexamination Certificate
active
07011167
ABSTRACT:
In a device for sealing a bore hole and discharging drill cuttings and stripped excavation material, including a housing adapted to receive sealing elements and an opening capable of being connected to the bore hole, one side wall of the housing is provided with at least one opening for the connection of a haulage duct, wherein the housing end side facing the bore hole is equipped with a lockable, particularly screwable, sealing flange (13) for the detachable connection with a bore hole lining (11). The sealing flange (13) is rotationally and sealingly mounted within the housing and carries projections, in particular an annular brim (15) which is overlapped by a stop (14) of the housing.
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Ebner Bernhard
Reumüller Bruno
Schmitke Barry
Weinberger Gerhard
Chapman and Cutler LLP
Cigar Lake Mining Corporation
Gay Jennifer H
VOEST-ALPINE Bergetechnik Gesellschaft m.b.H.
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