Mechanism that assists tractoring on uniform and non-uniform...

Details Mechanism that assists tractoring on uniform and non-uniform... Mechanism that assists tractoring on uniform and non-uniform...

2005-06-28

2005-06-28

Neuder, William (Department: 3672)

Wells

Expansible anchor or casing

C175S099000, C074S103000

Reexamination Certificate

active

06910533

ABSTRACT:
A six-bar linkage mechanism for conforming to the configuration of a tractored surface having a central link defined by a tool body and a saddle link spaced from the central link and movable for conforming with the tractored surface. A pair of front links each having pivotal connection with respective ends of the saddle link and having linearly movable pivotal connection with the central link to permit angular and spacing changes of the saddle link relative to the central link. A pair of centralizer links are located between the front links and have pivotal connections with the saddle link and pivotal connections with the central link. One of the pivotal connections is linearly movable on the central link. For tractor tools, when the tractored surface is a wellbore or well pipe, a plurality of six-bar linkages radiate from a tool body for surface conforming traction with the tractored surface.

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