Harris, Nicholas Robert, Beeby, Stephen Paul, Tudor, Michael John and White, Neil Maurice (Inventors) (2003) A locking arrangement comprising two independent locking mechanisms. GB2380224.
Abstract
A locking arrangement comprising an independent electrical locking mechanism 5 and an independent mechanical locking mechanism 1, operated by a single key 2. The electrically controlled mechanism 5 matches a code, received electronically from the key, to a code stored locally to the lock. The mechanically controlled lock is operated by a conventional bitted key. In use, the electronic part of the lock interrogates the key for its electronic code and if this is acceptable then the lock can be opened. The key 2 combines a conventional bitted key with a passive transponder circuit 4 such that the key appears to be substantially conventional in appearance. The control module 3 may be powered by means of batteries or by connection to the mains power supply. Keys may be programmed to activate the lock using a control box and either a master key containing a unique code or use of control buttons. The locking arrangement may also activate and deactivate a burglar alarm.
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