Earth borer system with drill-rod changer
Patent 6189628 Issued on February 20, 2001. Estimated Expiration Date: 
April 23, 2019. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
April 23, 2019. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References Re30071 Drilling apparatus Drill pipe handling and placement apparatus Patent #: 4547109 InventorApplicationNo. 298754 filed on 04/23/1999US Classes:175/52, WITH MAGAZINE FOR SUCCESSIVELY MOVING UNCONNECTED, ORIENTED TOOL OR SHAFT SECTIONS TO USE POSITION175/85, WITH ORIENTING OR RACKING MEANS FOR UNCONNECTED TOOLS OR SECTIONS OF SHAFT OR CASING175/122, WITH MEANS TO FEED DRIVE414/22.51WELL PIPE OR ROD RACKING MECHANISMExaminersPrimary: Schoeppel, Roger J.Attorney, Agent or FirmInternational ClassE21B 019/00Foreign Application Priority Data1999-01-13 DEAbstractThis invention relates to an earth borer system with a frame (48) incorporating a moveable rotary drive (50, 54) for a drill rod assembly consisting of at least two drill rods which can be detachably connected with one another along a bore axis (58); with a drill rod magazine (44) attached to the frame (48); with a release mechanism positioned on the frame provided with a clamping unit (102, 104, 106, 108, 110) that engages in a first drill rod and a breakaway unit that engages in one section of the rotary drive (50, 54) or in a second drill rod; and with at least one transport arm (66) that is attached to the frame and which can move a drill rod released from the drill rod assembly into a standby position in the drill rod magazine (44) or retrieve a drill rod from its standby position and place it on the drill rod assembly. According to this invention, at least one component unit of the release mechanism is mounted on the transport arm (66).Field of SearchWITH MAGAZINE FOR SUCCESSIVELY MOVING UNCONNECTED, ORIENTED TOOL OR SHAFT SECTIONS TO USE POSITIONWITH ORIENTING OR RACKING MEANS FOR UNCONNECTED TOOLS OR SECTIONS OF SHAFT OR CASING TOOL ELEMENT OR CONTINUOUSLY DRIVEN FLEXIBLE OR ARTICULATED ENDLESS MEMBER WITH MEANS TO SIMULTANEOUSLY FEED AND ROTATE TOOL FROM A SINGLE MECHANICAL ELEMENT WITH MEANS TO FEED DRIVE WITH ABOVE-GROUND MEANS TO FEED TOOL Rotary drive for a relatively advancing tool (e.g., rotary table) WITH ABOVE-GROUND MEANS TO ADVANCE OR RETRACT BORING MEANS WITH RELEASABLE MEANS NORMALLY HOLDING JOINTED SHAFT SECTIONS IN ANGULAR RELATION WELL PIPE OR ROD RACKING MECHANISM | |
