Patent · US Expired

Electric actuator

US6595487B2 · kind B2 · utility

64Cited by

6References

5Claims

0Family size

Assignee

Kongsberg Offshore AS · NO

Inventors

John A. Johansen · Kongsberg, NO
Heyn Halfdan Magnus · Kongsberg, NO
Roy Almedal · Tønsberg, NO

Key dates

Filing date	May 16, 2001
Grant date	Jul 22, 2003
Priority date	—
Expiry date	May 16, 2021

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B34/025
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

An actuator system for actuating a valve in a subsea environment comprises a valve spindle that is arranged to be coupled to an electric motor. To provide for power to the motor, at least one local electrical storage unit is provided. The system also includes a control unit comprising switching means for controlling the power to the motor. The control unit includes an intelligent processor and is arranged to receive signals from external sensors measuring a number of external and internal parameters, The actuator is preferable housed in a modular cage for easy replacement.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.