UNIT OF DUST HEAD FOR VACUUM CLEANER (VERSIONS) Russian patent published in 2009 - IPC A47L9/04 

FIELD: items of private and domestic use.

SUBSTANCE: unit of dust head is provided for usage in vacuum cleaner and contains head case, allowing contaminations suction port, rotary drum, located in head case with ability of rotation and allowing projections, implemented on its outside peripheral surface and allowing form, selected from group, containing in essence form of bars, hone or loop, and also its any combination, and element restricting rotation for limitation of rotary drum rotation. At movement of head case by treated surface drum is brought into rotation by frictional force of projections by treated surface. In version of implementation unit of dust head contains head case, allowing contaminations suction port, couple of rotary drums, which are located in head case with ability of rotation and each of them allows projections, implemented on its external peripheral surface, and restricting rotation component for limiting of rotation of each of pairs of rotary drums. At movement of head case by treated surface couple of drums is brought into rotation by frictional force of projections by treated surface. Rotation restricting component is implemented with providing of rotation ability of drum from couple and with prevention of rotation of the second drum, when head case id moved in none direction, and with providing of rotation ability of the second drum and with prevention of the first drum rotation, when head case is moved backwards.

EFFECT: providing of effective removing from treated surface of thin contaminations.

11 cl, 22 dwg