Abstract: An interlocking system for preventing simultaneous opening of drawers of a cabinet, including activation members affixable to back sides of the drawers and coupled to carriage members slideably mounted in guide supports affixable in the cabinet behind the drawers in respective registration with the activation members. An elongated track member affixable in the cabinet on a side of the guide supports slideably guides a stack of mobile blocks between which bolt elements projecting from the carriage members are driveable only one at a time due to a limited space provided for displacement of the blocks and for insertion of one of the bolt elements. The carriage members slide using the pulling and pushing motions of the activation members when the drawers are opened and closed. Due to the limited space, only one bolt element is insertable between the mobile blocks and only one drawer is openable at a same time.

Abstract: An interlocking system for preventing simultaneous opening of drawers of a cabinet, comprising activation members affixable to back sides of the drawers and coupled to carriage members slideably mounted in guide supports affixable in the cabinet behind the drawers in respective registration with the activation members. An elongated track member affixable in the cabinet on a side of the guide supports slideably guides a stack of mobile blocks between which bolt elements projecting from the carriage members are driveable only one at a time due to a limited space provided for displacement of the blocks and for insertion of one of the bolt elements. The carriage members slide using the pulling and pushing motions of the activation members when the drawers are opened and closed. Due to the limited space, only one bolt element is insertable between the mobile blocks and only one drawer is openable at a same time.

Abstract: The wastewater treatment unit is operable under high intermittent flow rate variations. It comprises a first clarifier in which is carried out a gravitational settling of solids and a second clarifier comprising a network of parallel plates inclined with respect to the vertical and a portion defining a collecting pit. Each plate has an upper edge positioned at a height lower than the filling level of the first clarifier to define an overflow giving access to the collecting pit. The network of plates allows to carry out a further settling of solids to create a counterflow of settled matter toward the first clarifier and a flow of clarified wastewater falling in the collecting pit. A filtering chamber is positioned above the first clarifier and comprises a filtering media supporting a biomass for digesting the organic content of the wastewater coming from the second clarifier.