SUPPORT MODULE FOR TRANSPORTATION OF LOADS Russian patent published in 1995 - IPC

FIELD: transportation of heavy loads. SUBSTANCE: unit intended to deliver working agent to module is made in form of cylinder installed vertically on housing and closed from one end. Cylinder open end is built into low pressure chamber. Cylinder accommodates two coaxial pistons. Lower piston has axial channel communicating with high-pressure chamber through radial channel made in piston body, groove on its external side surface, radial channel made in cylinder wall and channel is module housing. Lower end face of this piston is spherical and it engages with above-indicated working piston. Upper end face of piston has sealing ring. Upper piston is spring-loaded and it engages with travel stop. Lower end oface of piston is stepped. Step is made in form of seat engaging with sealing rings of lower piston. Radial channel to let in working agent is made in cylinder wall at level of space formed by cavity of lower end face of upper piston and upper end face of lower piston. EFFECT: enlarged operating capabilities. 3 dwg