VACUUM DEVICE FOR UNLOADING AND LOADING OF POWDER PRODUCTS Russian patent published in 1994 - IPC

FIELD: materials handling equipment. SUBSTANCE: installed additionally in housing-tube for reciprocating are rod, metering device and brushes, and torus-shaped member is arranged between housing-tube and rod and is installed for reciprocating by rolling when rod is moving. Metering device and brushes are installed in housing-tube by means of rollers arranged in pairs opposite to each other relative to axis of rod and engaging with housing-tube and rod. Torus-shaped member made of flexible material has flexible cord placed inside flexible material in planes passing through axis of torus-shaped member. EFFECT: enlarged operating capabilities. 2 cl, 6 dwg