METAL SECURITY SYSTEMS WITH HORIZONTAL INVISIBLY-FIXED BARS FOR ALL-KIND OF FRAMES - CONSTRUCTION TECHNIQUE OF THE SAME

摘要

Novelty: a metal security system with horizontal invisibly-fixed bars applicable to all-kind of frames and construction technique of the same are disclosed. Constitution: two vertical aluminium profiles constitute the system’s steady frame in the apertures of which there are inserted horizontal invisibly-fixed metal bars M which are secured in a unique invisible mode with no use of a lock, for offering optimal protection against break-ins. No welding is required by the construction technique in use.