초록 ▼

A telescopic extension for an electric household appliance comprises an inner tube, an outer tube, a sleeve, at least one first constraining element, a thrusting slider, resilient elements and an actuating element; in the extension the sleeve is arranged between the inner tube and the outer tube hav

A telescopic extension for an electric household appliance comprises an inner tube, an outer tube, a sleeve, at least one first constraining element, a thrusting slider, resilient elements and an actuating element; in the extension the sleeve is arranged between the inner tube and the outer tube having a cross-section of substantially constant diameter, the sleeve is provided with a longitudinal cavity and a recess formed on the bottom of the cavity, the thrusting slider is housed in the longitudinal cavity and retained radially by the outer tube, the thrusting slider is provided with at least one first slot and the resilient means are housed in the first slot of the thrusting slider and are engaged with a recess of the sleeve.

대표청구항 ▼

1. Telescopic extension for an electric household appliance comprising:a) an inner tube and an outer tube sliding inside one another, b) a sleeve fastened to said outer tube, c) at least one first constraining means capable of locking together said inner tube and said outer tube, d) a flat and long

1. Telescopic extension for an electric household appliance comprising:a) an inner tube and an outer tube sliding inside one another, b) a sleeve fastened to said outer tube, c) at least one first constraining means capable of locking together said inner tube and said outer tube, d) a flat and long thrusting slider, engaging at least said first constraining means under the action of resilient means, and e) actuating means operationally connected to said thrusting slider, f) said inner tube being provided with a row of notches of predefined shape, g) said outer tube having a cross-section of substantially constant diameter and having a lateral opening, h) said first constraining means and thrusting slider being movably supported by said sleeve, i) said thrusting slider acting on said first constraining means, through the action of said resilient means, so as to force said first constraining means inside a first notch of said inner tube and lock said inner tube inside said outer tube; j) said actuating means being capable of disengaging said thrusting slider from said first constraining means so as to leave said first constraining means free to move radially and come out of said first notch, releasing said inner tube from said outer tube and allowing said inner tube to slide with respect to said outer tube so as to adjust the length of said extension, characterized in that k) said sleeve is arranged between said inner tube and said outer tube having a cross-section of substantially constant diameter, l) said sleeve is provided with a longitudinal cavity and a recess formed on a bottom wall of said cavity, m) said thrusting slider is housed in said longitudinal cavity and is retained radially by said outer tube, n) said thrusting slider is provided with at least one first slot, and p) said resilient means are housed in said first slot of said thrusting slider and engage said recess of said sleeve.