A method for locking a vacuum cleaner telescopic suction tube has linearly spaced depressions in the inner tube into which a locking member as part of an encircling spring rests

摘要

The inner tube (3) of a telescopically extending suction hose is provided with indentations (7) spaced in line along the length with a rotation prevention groove (16) and the outer tube (2) has a sleeve (4) with an operating button (5) by which a circumferential spring (15) is depressed to release an engagement with one of the indents to adjust the tube length.