VACUUM CLEANER AND SUCTION CHANNEL UNIT FOR THE SAME Russian patent published in 2006 - IPC A47L9/02 

FIELD: mechanical engineering.

SUBSTANCE: suction channel unit for vacuum cleaner is connected to vacuum cleaner casing through flow channel extension channel and is adapted for drawing air and dust from surface to be cleaned during operation of vacuum cleaner. Suction channel unit has suction head equipped with suction opening provided at its lower surface opposite surface to be cleaned. First connection member is extending from one side of suction head. Second connection member is rotationally connected at its one end with output end of first connection member and is designed for rotation around first axis for displacement upward and downward relative to suction head. Its other end is connected to flow channel extension. Third connection member is cooperating with second connection member through its one end which is rotating around second axis substantially perpendicular to first axis, and is connected with its other end to flow channel extension.

EFFECT: increased efficiency in cleaning of surface owing to improved pivot joint construction and simplified rotation of extension channel relative to suction head.

12 cl, 7 dwg