SUCTION HEAD Russian patent published in 2007 - IPC A47L9/02 

FIELD: suction head used in commercial and household vacuum dust removal systems.

SUBSTANCE: suction head has casing with suction branch pipe, platform with supporting members formed as self-supporting rotary rollers, handle for moving of platform, branch pipe built into platform and adapted for mounting of casing, and feeding dust-laden air pipeline. Dust-laden air pipeline is made in the form of tubular member positioned within platform branch pipe for axial movement and following the relief of surface to be cleaned. Tubular member is retained by means of spiral spring having outer coil fixed in platform and inner coil clamped between tubular member and protective head on its lower end. Branch pipe of platform has cavity adapted for insertion therein of spiral spring. Slit-type washer is fixed between end of tubular member and protective head provided with grid. Spherical support positioned in end part of tubular member is adapted for rotation between slit-type washer and grid.

EFFECT: increased efficiency in cleaning of even surface and surface having complicated relief due to reduced friction between said surface and head members providing contact cleaning of dusty surface, wider range of movement of tubular member for cleaning of ridge-like obstacles having increased height, and improved operating characteristics of head.

2 dwg