Guide rail system for a telescoping mast on a drilling rig

Details Guide rail system for a telescoping mast on a drilling rig Guide rail system for a telescoping mast on a drilling rig

2008-01-03

2010-11-09

Gay, Jennifer H (Department: 3676)

Boring or penetrating the earth

With above-ground means to advance or retract boring means

C175S113000, C175S162000, C175S220000, C166S077100, C166S085100

Reexamination Certificate

active

07828086

ABSTRACT:
A guide track system for a tool that can be raised and lowered within a telescoping drilling rig tower is provided. The system includes parallel guide rails mounted on a fixed lower tower section and on a movable upper tower section of the drilling rig tower. The lower and upper guide rails are parallel to one another and overlap one another when the lower tower section is nested with the upper tower section. Guide wheels rotatably attached to the tool can have parallel grooves to roll on the guide rails. The grooves can have sidewalls that flare outward so that they do not scuff against the guide rails as the tool travels up and down within the tower.

REFERENCES:
patent: 6112834 (2000-09-01), Barrett
patent: 6412576 (2002-07-01), Meiners
patent: 2005/0194189 (2005-09-01), Barnes

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