METHOD AND DEVICE FOR PROPELLING TORUS-SHAPED LOAD ENVELOPE Russian patent published in 1995 - IPC

FIELD: pneumatic transport. SUBSTANCE: method involves placing torus-shaped envelope on the external side of flexible tubular guide turned inside out in advance, then moving said envelope by building up excess pressure in guide. Device comprises sealed chamber 1 communicating with gas generator 2, and power-operated drum 3 wound with flexible hose 4 whose end is turned inside out and secured in pipe union of chamber 1. Torus-shaped load envelope 5 is installed on hose 4. As gas is supplied from gas generator 2 into hose 4, the latter is blown up and the load envelope starts rolling over it. Working length of hose is adjusted by winding the hose on or off the drum 3. EFFECT: improved functional and operating characteristics. 2 cl, 2 dwg