Safety lock, in particular to tanks of flammable liquids, allowing the control of an exhaust gas compresses

摘要

Safety lock, in particular to tanks of flammable liquids, allowing the control of an exhaust gas compresses. / p & & p & it comprises a pair of retaining members 9 mounted on an element of the base 4, an opening 6, a locking bar 14, a cover 7, a device 18 of the mounting of the bar 14 on the cover plate 7 so that it can perform displacements limits, to penetrate into the retaining members 9 and out, as well as a rotation about its longitudinal axis x, a cam 40 fixed to the locking bar 14 and having a projecting portion 44 located has a maximum distance from the axis x, and a concave portion 45, a device for the elastic biasing 47, 49, 53. When the gas pressure exceeds predetermined a value within the reservoir 1, the elastic device 47, 49, 53 makes it possible to lift at least a portion of the lid 7 is the subject of the base 4, as well as an internal-combustion engine of the gas out of the reservoir 1.