The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 24, 2008
Filed:
Apr. 14, 2005
H. Stanley Mullins, Perry, OK (US);
Jerry W. Beckwith, Perry, OK (US);
Kelvin P. Self, Stillwater, OK (US);
Brent G. Stephenson, Stillwater, OK (US);
Floyd R. Gunsaulis, Perry, OK (US);
H. Stanley Mullins, Perry, OK (US);
Jerry W. Beckwith, Perry, OK (US);
Kelvin P. Self, Stillwater, OK (US);
Brent G. Stephenson, Stillwater, OK (US);
Floyd R. Gunsaulis, Perry, OK (US);
The Charles Machine Works, Inc., Perry, OK (US);
Abstract
A system for boring horizontal boreholes and installing products using a dual member drill string. The system is comprised of a boring machine with a frame and a rotary drive supported on the frame, a downhole tool, and a dual member drill string. The drill string comprises an inner member disposed within a tubular outer member such that the inner member is rotatable independent of the outer member. The outer member has at least one helical projection supported on an exterior surface of the outer member. The projections on the outer member function as an auger to clear spoils and support the bore. The auger arrangement with the dual member drill string can be used in forward reaming or backreaming operations.