FORCE MEMBER Russian patent published in 1995 - IPC

FIELD: mining, construction, mechanical engineering. SUBSTANCE: force member has sliding force jaws with slants on their inner surfaces, trapeziform inserts, that are mounted between sliding jaws and leaned with their inclined planes to slant surfaces of sliding jaws; flexible tube-type chamber, mounted between sliding force jaws and big bases of inserts; butt locking tools with union to feed working agent into flexible tube-type chamber; separating partitions, guides and butt member. Flexible chamber is mounted so as to form at least one V-shaped section. Separating partitions are located between force member branches and have aperture for bent part of flexible tube-type chamber. During working agent feeding chamber is increasing its volume and moves apart force jaws. They are moving in guides. After pressure of working agent dropped sliding force jaws are coming back in initial position. EFFECT: force member allows to increase productivity in production of block stone and demolishing of monolithic objects. 2 cl, 2 dwg