Patent ID: 8567825

Claim:
A telescopic extension comprising: a) an inner tube; b) an outer tube, wherein said inner tube and said outer tube are telescopically slidable with respect to each other, wherein said inner tube comprises a plurality of deformations of predefined shape on its outer surface; c) a constraining device which is configured so as to block sliding of the inner tube with respect to the outer tube when said constraining device at least partially engages one of said deformations; d) a slider and elastic means, wherein said slider cooperates with said constraining device by means of said elastic means; e) an actuating device operatively connected to said slider, wherein said actuating device extends over at least half the length of said outer tube, wherein said actuating device comprises a substantially cylindrical body fitted on at least part of the outer surface of said outer tube; and f) wherein said substantially cylindrical body has a lateral surface which corresponds to a lateral surface of said outer tube, wherein said lateral surface of the substantially cylindrical body comprises at least one opening positioned to expose a surface of the outer tube whereby grip of user on the substantially cylindrical body may also contact the exposed surface of the outer tube and lock the cylindrical body with respect to the outer tube.