The invention provides an electromagnetic actuator comprising at least two coils (5, 6) associated with ferromagnetic cores (11) and disposed facing each other, and a moving element (1) extending between the coils (5, 6) and associated with an actuator rod (2), the coils (5, 6) comprising conductors...http://www.google.com/patents/US6946937?utm_source=gb-gplus-sharePatent US6946937 - Electromagnetic actuator
