Emergency escape door for secure technical enclosure - has additional remote operated security lock which can be operated at need by personnel inside enclosure

摘要

An escape door (1,2,3) for a secure technical enclosure has a locking bolt (6) with key operated lock (5) and an emergency handle (7) operable from inside the enclosure. An additional security lock (8) necessary to comply with other safety needs, comprises a pair of electromagnetically operated armatures (15,16,9,10) connected by yoke (12) to security bolt (13). Remote operation of the electromagnets (15,16) provides the necessary locking action and de-energisation of either magnet (15) or (16) results in unlocking via reversing force of tension spring (19) or weight (18). To enable escape. ADVANTAGE - Safety of personnel working inside enclosure is not prejudiced by remote security arrangements. Simple and reliable adjuct to existing safety practice.