Electronic locking device

An electromagnetic locking device comprising:

• first and second body portions located adjacent one another and having a junction therebetween, said locking device providing said body portions with an unlocked condition in which said body portions are moveable relative to one another and with a locked condition in which said body portions are not moveable relative to one another;
• a locking mechanism comprising at least one first shuttle and at least one electromagnet fixed to one of said first and second body portions and associated with said first shuttle such that when said electromagnet is in a dormant condition said first shuttle straddles the junction between said first and second body portions so as to prevent movement of said first and second body portions relative to one another and such that when said electromagnet is energised said shuttle moves and does not straddle said junction thereby allowing movement of said first and second body portions;
• a jammer mechanism comprising at least one jammer comprising at least one ferromagnetic material said jammer adapted to move between a first jammer condition in which said jammer straddles the junction between said first and second body portions thereby preventing movement of said first body portion relative to said second body portion and a second jammer condition in which said jammer does not straddle the junction between said first and second body portions thereby allowing movement of said first body portion relative to said second body portion wherein the or each jammer tends towards said second jammer condition.