Motor vehicles – With means for controlling operation responsive to...
Reexamination Certificate
2007-07-03
2009-12-01
Dickson, Paul N (Department: 3618)
Motor vehicles
With means for controlling operation responsive to...
C180S169000, C180S204000, C180S305000, C180S306000, C173S184000, C173S028000
Reexamination Certificate
active
07624831
ABSTRACT:
A method and apparatus to move a modular drilling rig in formation wherein the drilling rig includes a plurality of self-propelled modules to facilitate the movement of the rig while all systems are intact and fully operational. The apparatus includes a plurality of wheel assemblies which are steerable to guide the modules during movement. The apparatus also includes a propulsion system for each of the modules to drive each of the modules during movement. A steering control and position feedback system is also provided for determining the relative position of each module with respect to the master module. This control and feedback system provides feedback to the steering control and feedback systems of other modules in order to move the modules in a formation.
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National-Oilwell 1998-1999 Composite Catalogs, pp. 555-559.
Major Christopher Alan
Orr Melvin Alan
Stauder Robert Lee
Trevithick Mark
Akin Gump Strauss Hauer & Feld & LLP
Dickson Paul N
Evans Bryan A
Helmerich & Payne, Inc.
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