초록 ▼

A barrier device for preventing passage, having a simple construction and capable of being lowered into a shallow trench. The barrier device, preferably constructed as a gate for preventing passage to and from buildings or property, comprises a moveable framework for supporting a telescopic barrier

A barrier device for preventing passage, having a simple construction and capable of being lowered into a shallow trench. The barrier device, preferably constructed as a gate for preventing passage to and from buildings or property, comprises a moveable framework for supporting a telescopic barrier arrangement and a movement device for moving the support device between a barrier position and an open position of the telescopic barrier arrangement. The telescopic barrier arrangement is shortened during the movement from the barrier position to the open position with the help of a counter-force which can be applied by a sunken base, and extended in the opposite direction during movement from the open position to the barrier position, with the help of the force of gravity.

대표청구항 ▼

[ What is claimed is:] [1.]1. Barrier comprising:a sunken trench having an upper perimeter at ground level and a lower level defining a base;two essentially vertical supports (1, 1') each of which having an upper end and a lower end, said lower end extending into said sunken trench (5),an upper esse

[ What is claimed is:] [1.]1. Barrier comprising:a sunken trench having an upper perimeter at ground level and a lower level defining a base;two essentially vertical supports (1, 1') each of which having an upper end and a lower end, said lower end extending into said sunken trench (5),an upper essentially horizontal cross-beam (2) having a top side and a bottom side and having first and second ends guided in said vertical supports (1, 1') and moveable upwards to a raised position and downwards to an open position,a lower essentially horizontal cross-beam (3) having a top side and a bottom side and having first and second ends guided in said vertical supports (1, 1'), andtelescopic barrier elements (4; 4a, 4b, 4c) having first and second ends, which are connected at one end with the upper cross-beam (2) and at the other end with the lower cross-beam (3),wherein raising said upper cross-beam (2) causes said barrier elements (4; 4a, 4b, 4c) to be telescopically extended by the weight of the lower cross-beam (3), and wherein the lower cross-beam (3) remains in the sunken trench (5) when the upper cross-beam is in the raised position, andwherein lowering said upper cross-beam (3) to the open position causes said lower transverse support (3) to come into contact with said base (5a) of said sunken trench (5) and to telescopically constrict said barrier elements (4; 4a, 4b, 4c) in the sunken trench (5).