Electrically isolated actuator output shaft

摘要

The invention pertains to a system for operating a fuel valve adapted to be disposed within a fuel tank. The system comprises a motor, an actuator assembly coupling the motor to a fuel valve, said actuator assembly including a first metallic section (12) coupled to the motor, a drive shaft to be coupled to the fuel valve, a second metallic section (14) coupled to the drive shaft and an electrically insulating section (60) coupled to the first metallic section and the second metallic section adapted to transmit torque from the motor to the drive shaft. The electrically insulating section (60) consists of an annular portion (62) disposed at least partially within the first metallic section and at least partially extending beyond an open end of the first metallic section and a longitudinal portion (64) extending from the annular portion disposed within the first metallic section. A diameter (66) of the annular portion is greater than a diameter (68) of the longitudinal portion.