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US 2007/0175668 A1Published application
Process and system for drilling and lining a bore hole
AssigneeJ. S. Redpath Ltd.
InventorsMorris Medd, Mike Kelly, Dan Kelly
Life of this patent
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AssigneeJ. S. Redpath Ltd.
InventorsMorris Medd, Mike Kelly, Dan Kelly
Estimating the term…
An apparatus is provided for the drilling of a borehole and its simultaneous lining with cement or the like by the same apparatus. The apparatus comprises a combination spray bead and reamer head, a means to drive the reamer head through a borehole and a means for delivering cement to the spray head. Cement is fed to a rotatable spray disc or arms of the spray head, which is arranged to distribute the cement substantially evenly over the internal surface of the borehole created by the reamer head. The apparatus uses lined drill rods, as well as a lined reamer core with a double walled plastic tube. An air transfer assembly is used to connect an internal air source to an air passage contained in the plastic tube, such that the external air source remains stationary during rotation of the lined drill rods and attached reamer and spray beads.
A reamer assembly for use with a raise bore drilling and lining apparatus, said reamer assembly including a reamer head, a spreader assembly secured to said reamer head for movement therewith and for distributing a liner material on the wall of said bore hole during operation thereof, said spreader assembly comprising a plate rotatable relative to said reamer head;
A drill rod comprising an outer casing, a connection at opposite ends of said rod to permit a plurality of said drill rod to be connected in seriatim to form a drill string;
A reamer assembly for use with a raise bore drilling and lining apparatus, said reamer assembly including a reamer head;
Dependencies are inferred from the claim text.