Patent ID: 11952856
Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 12:
13. An electric bonnet comprising:
a housing;
a guide piston disposed in the housing,
wherein the housing in which the guide piston is disposed is void of any hydraulic fluid;
an electric motor having a motor shaft;
a rear housing connected to the housing;
a gearbox assembly disposed in the rear housing, the gearbox assembly being coupled to the motor shaft of the electric motor; and
a roller screw assembly disposed in the rear housing, the roller screw assembly having a first end and a second end,
wherein the first end of the roller screw assembly is connected to the gearbox assembly, and
wherein the second end of the roller screw assembly is connected to the guide piston,

wherein rotation of the motor shaft of the electric motor transmits rotary motion to the gearbox assembly,
wherein the gearbox assembly transforms the rotary motion into linear motion using the roller screw assembly, and
wherein the linear motion of the roller screw assembly actuates the guide piston.