Patent Number: 6,305,722

Title: Telescopic tube, in particular for sprinkler systems

Abstract: The invention concerns a telescopic tube (10), in particular for sprinkler systems, comprising an outer tube (12) and an inner tube (14) which is movable relative to the latter and has an inner end piece (36) which extends inside the outer tube and has an outer diameter which is larger than the inner tube in their adjoining regions. The telescopic tube (10) further comprises a securing element (26) which surrounds the inner tube and is provided for the outer tube, the outer end (22) of the latter extending in said securing element (26). According to the invention, in order to provide a precise connection between the inner and outer tubes using precision screw machine parts in particular, the outer end (22) of the outer tube is widened and extends inside an annular mounting (24) of the securing element which in turn comprises an outer edge (34) which extends externally along the outer tube and is deformed in the direction of the outer end of the outer tube when the latter has been fitted in the mounting.

Inventors: Vieregge; Uwe (Grundau, DE)


International Classification: C04B 7/345 (20060101); C04B 7/42 (20060101); C04B 7/00 (20060101); F16L 27/12 (20060101); F16L 027/12 ()

Expiration Date: 10/23/2018