Importance

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Abstract

A tool for moving within a passage comprises an elongated body having an internal fluid chamber, at least one gripper assembly engaged with the body, a turbine, and a power transmission assembly. The body is configured to be secured to a fluid conduit so that a first fluid flowing through the conduit flows into the internal fluid chamber of the body. The gripper assembly has an actuated position in which the gripper assembly grips onto an inner surface of the passage to substantially limit relative movement between the gripper assembly and the inner surface. The gripper assembly also has a retracted position in which the gripper assembly permits substantially free relative movement between the gripper assembly and the inner surface of the passage. The turbine is configured to receive the first fluid flow through the internal fluid chamber, the turbine having an output shaft configured to rotate as the first fluid flows through the turbine. The power transmission assembly is configured to convert rotation of the output shaft into power for moving the gripper assembly to its actuated position.

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First Claim