AIR HOIST Russian patent published in 1994 - IPC

FIELD: hoisting devices. SUBSTANCE: air hoist has hollow housing, tubular guides, source for pressure feed of working medium, drive drum, flexible hoses and load platform. Source for pressure feed of working medium communicates with inner space of housing. Drive drum is mounted inside hollow housing. Each flexible hose is positioned in corresponding tubular guide. One end of flexible hose is closed and connected with end of flexible tie. Second end of flexible hose is turned inside out and is secured along perimeter of corresponding tubular guide. Free end of each flexible tie is secured on drum. Load platform is kinematically associated with each flexible hose by means of rods one end of which is secured on load platform. Free end of each rod is mounted to interact with closed end of corresponding flexible hose. Tubular guides are rigidly connected to each other and to housing. EFFECT: enhanced efficiency. 1 dwg