Door (gate) fitted with security bolt

摘要

The invention relates to increasing the security of doors (gates) at the two most sensitive points, that is to say the fixing and the closure. 1. Fixing: the hinges are replaced by two trunnions 3 and 4 pivoting on a tube 1 closed at its top and locked in this position by a collar 2 welded 20 mm above the lower trunnion 4. 2. Closure: the closure of the door is provided by a security bolt of very high strength, which cannot be damaged as the latch is constituted by a steel bar of 30 mm diameter. The keeper is also of great ruggedness as it is machined from a 50 mm x 50 mm square block of steel. <IMAGE>