Telescopic tube and method for the manufacture thereof

Details Telescopic tube and method for the manufacture thereof Telescopic tube and method for the manufacture thereof

E - Fixed Constructions

04

H

20/115, 154/53

E04H 12/18 (2006.01) A01K 87/02 (2006.01) B29C 53/58 (2006.01) B29C 69/00 (2006.01) E04H 12/32 (2006.01) F16B 7/10 (2006.01) F21V 21/22 (2006.01)

Patent

CA 1181218

Abstract A telescopic tube, comprising a plurality of relatively sliding tube members (10, 11) fitted within each other. Along a major part (Lo) of their length, the tube members are straight cylindrical tubes whose ends are provided with conical bulges (14, 15), so that one end is provided with an external cone (14) which diverges towards the end and the other end is pro- vided with an internal cone (15) which converges towards the end. The latter end is surrounded by an external annular flange (16). The external and internal conical bulges (14) and (15) of individual tube members (10) and (11) are wedged against each other with friction engagement and keep the telescopic tube in the extended condition.

396159

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