INDUSTRIAL VACUUM-CLEANER Russian patent published in 1995 - IPC

FIELD: aspiration of contaminated air. SUBSTANCE: vacuum-cleaner has body with axially positioned cover, air-sucker mounted in cover, filter sleeve disposed in body and having lower cut connected with pan. Carcass formed from perforated disks disposed one above the other and device for cleaning filter by stirring are disposed in cavity. Filter cleaning device has bar extending in filter cavity through disks. One end of bar is rigidly connected with pan. Vacuum-cleaner carrier handle is fixed on cover. Filter cleaning device has auxiliary bar extending in filter cavity through disks and spring-biased with respect to cover. One end of auxiliary bar is rigidly connected with pan and other ends of bars are receiver in openings made in cover. Other ends of bars are rigidly connected with handle and positioned in symmetry with respect to longitudinal axis of body. Bar axes space exceeds air-sucker cross size. EFFECT: increased efficiency and enhanced reliability in operation. 2 dwg