US 11,713,837 B2
Tube assembly, pressure exchanger and reverse osmosis system
Stig Kildegaard Andersen, Krusaa (DK); and Tommi Kolb, Nordborg (DK)
Assigned to Danfoss A/S, Nordborg (DK)
Filed by Danfoss A/S, Nordborg (DK)
Filed on Dec. 13, 2021, as Appl. No. 17/548,759.
Claims priority of application No. 20215491 (EP), filed on Dec. 18, 2020.
Prior Publication US 2022/0196189 A1, Jun. 23, 2022
Int. Cl. F16L 15/02 (2006.01); F16L 15/00 (2006.01); F16L 58/18 (2006.01); F16L 15/04 (2006.01)
CPC F16L 15/006 (2013.01) [F16L 15/02 (2013.01); F16L 58/182 (2013.01); F16L 15/04 (2013.01)] 23 Claims
OG exemplary drawing
 
1. A tube assembly comprising an inner tube having an outer thread, an outer tube having an inner thread engaging the outer thread, and means for securing an angular position between the inner tube and the outer tube, wherein the inner tube comprises at least a groove on its outer surface and the outer tube comprises a recess on its inner surface, wherein a blocking element is arranged in a space formed by the recess and the groove in overlapping relation with the groove and the recess, wherein the blocking element is in form of a nut, and wherein a screw penetrating the outer tube is threaded into the nut.