Pusher set for fire-proof door, has latches made of welded steel pipes in which electronic warning device is arranged with section of latch having square hollow pin through which cable with connector passes

摘要

The pusher set (2) has latches (4) which can be locked and opened with a catch whereby the set can be displaced through fire or water. The warning signal is provided in acoustical or optical form, in the latter case possibly using light produced by a chemical reaction. Each latch of the fireproof door consists of two parts which are made from welded steel pipes in which an electronic warning device is arranged. The door arrangement may operate with automatic extinguishing systems. A section of the latch exhibits a square hollow pin through which a cable with connector passes which is connected to electronic warning device.