DETACHABLE CONNECTION Russian patent published in 2016 - IPC A47B88/00 

FIELD: manufacturing technology.

SUBSTANCE: ring shell, in particular, of U-shaped cross-section, containing at least one ring adapter on ring shell wall, wherein said adapter is connected to said wall by means of at least one detachable joint. Detachable joint essentially consists of recess made in wall, and tab fitted into said recess passing across ring shell longitudinal extension, wherein tab is located in ring adapter recess area. Recess forms first stop and first stop ledge projecting across tab insertion direction, wherein stop and stop ledge resting against recess limiting edge so, that said limiting edge is located and retained between stop and stop ledge with prevention of tab extracting from recess. Recess has second stop resting against recess second limiting edge, in particular, second limiting edge stop surface, and/or recess has second stop ledge resting against recess second limiting edge, particularly against second limiting edge opposite to stop surface, and/or limiting edges are located at inclination relative to tab or relative to tab insertion direction so, that distance between limiting edges increases in ring shell upper side direction.

EFFECT: higher reliability of connection between elements.

7 cl, 9 dwg