YIELDING UNIT Russian patent published in 1995 - IPC

FIELD: mining. SUBSTANCE: yielding unit of metal support of special section have support internal and external members lap-jointed with the aid of upper and lower locks in form of clamps with nuts and strips having convex flanges engageable with flanges of support external member. Strip flanges are made in form of two straight parts arranged at angle and interconnected by curved part. In this case, strip of upper lock is installed for engagement of its flange straight parts with edges of flanges of support external member. Straight parts of flanges are arranged at different angles. EFFECT: higher efficiency. 5 cl, 5 dwg