Wells – Processes – Placing or shifting well part
Reexamination Certificate
2007-03-08
2009-12-01
Gay, Jennifer H (Department: 3672)
Wells
Processes
Placing or shifting well part
C166S212000, C166S217000, C175S099000, C175S230000
Reexamination Certificate
active
07624808
ABSTRACT:
A gripper for use in a downhole tool is provided. The gripper can include an actuator, a toe assembly, and an expandable assembly. The toe assembly can be a leaf-spring like elongate continuous beam. The expandable assembly can be a linkage including a plurality of links. The linkage is coupled to the actuator such that the actuator expands the expandable assembly which in turn expands the toe assembly. In operation, during one stage of expansion radial forces are transmitted to the toe through both interaction of a rolling mechanism on the toe with the expandable assembly and pressure of the linkage assembly directly on an inner surface of the toe.
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Gay Jennifer H
Hutchins Cathleen R
Knobbe Martens Olson & Bear LLP
Western Well Tool, Inc.
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