Actuator with energy recovery return

摘要

An electronically controlled actuator (13) which compresses a fluid thereby storing potential energy as it translates from a first to a second position is disclosed. The compressed fluid exerts a high force on the actuator (13) and the potential energy is recovered in returning the actuator (13) to the first position. A latching arrangement (23) automatically locks the actuator shaft (11) as it reaches the second position. The latching arrangement is selectively unlocked at the prescribed time to allow the stored potential energy to return the actuator (13) to the first position.