GATE WITH BALANCING DEVICE ON HELICAL SPRINGS Russian patent published in 2002 - IPC

FIELD: gates. SUBSTANCE: gate has a balancing device, with one end connected to the rotating leaf and with the other fixed, and containing at least a single block of helical springs comprising at least two coaxially arranged helical springs. The internal spring has an outside helix diameter lesser than the inside helix diameter of the respective external spring. One of the springs in one and the same axial direction has a left-handed coiling, and the other spring has a left-handed coiling, and the other spring has a right-handed coiling, as a result, the coils of both springs intersect. The springs are made in the direction of elastic energy storage deformation in the form of tension springs. The ends of both coaxial springs forming a single spring block terminate in the form of a helix and are pushed on a common fastener that has the first narrow fastening section facing the springs and used for fastening of the internal spring, and a wider section adjoining it on the opposite side of the springs and used for fastening of the external spring. The fastening sections on their edges are made with hooked bosses engageable with the pushed helix of the springs. The quantity of the fasteners on the common bearing member of fasteners equals the quantity of the connected spring blocks. EFFECT: enhanced safety in service of the gate. 2 cl, 5 dwg