VACUUM CLEANER TELESCOPIC SUCTION TUBE Russian patent published in 1999 - IPC

FIELD: household equipment. SUBSTANCE: telescopic tube has outer and inner tubes, at least one stop member engageable with retaining slot of inner bushing and held within guiding bushing, which partially encloses inner tube. Guiding bushing is surrounded with handling bushing having at least one cavity for receiving stop member. At least one springy retaining member is positioned between guiding bushing and handling bushing. Annular cap is positioned on and connected with handling bushing end opposed to outer tube. Annular cap is adapted for displacement with respect to guiding bushing. Slot for receiving springy member is disposed between handling bushing and annular cap so as to provide axial return motion of springy member. EFFECT: increased efficiency, simplified construction and reduced production cost. 10 cl, 29 dwg