Patent ID: 11971004
Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
Field: Civil engineering (Other fields)
Classification: CPC F  E | IPC E  F

Claim 15:
16. A method for regulating torque, comprising:
flowing a fluid across a fin in a first state coupled to a hub, the hub comprising a wall, an outer surface, an inner surface, and an opening extending from the outer surface to the inner surface, the fluid comprising a fluid property, the fin comprising:
a first portion disposed on the outer surface and comprising a leading edge of the fin and a hub locking feature; and
a second portion comprising a trailing edge of the fin, a backing, a locating feature, and a fin locking feature, wherein:
the trailing edge comprises a first exit angle when the fin is in the first state;
the fin locking feature is disposed in the hub locking feature;
the locating feature is disposed in the opening and engaged with a surface of the opening;
the backing is engaged with the inner surface; and
the trailing edge is movable relative to the backing; and

rotating the hub with a first torque based at least in part on the first exit angle;
changing the fluid property;
changing the fin from the first state to a second state in response to changing the fluid property, wherein the trailing edge comprises a second exit angle when the fin is in the second state; and
rotating the hub with a second torque based at least in part on the second exit angle.