Expandable ramp gripper

Details Expandable ramp gripper Expandable ramp gripper

2011-06-07

2011-06-07

Thompson, Kenneth (Department: 3672)

Boring or penetrating the earth

With below-ground tool drive prime mover

With means to anchor prime movers support to bore wall

C166S217000

Reexamination Certificate

active

07954562

ABSTRACT:
A gripper for use in a downhole tool is provided. The gripper can include an actuator, an engagement assembly, and an expandable assembly. The engagement assembly can comprise a leaf-spring like elongate continuous beam. The expandable assembly can comprise a linkage including a plurality of links. The linkage can be coupled to the actuator such that the actuator expands the expandable assembly which in turn expands the engagement assembly. In operation, during one stage of expansion radial forces are transmitted to the engagement assembly through both interaction of a rolling mechanism on the engagement assembly with the expandable assembly and pressure of the linkage assembly directly on an inner surface of the engagement assembly.

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