METHOD OF FORMING HIGH-STRENGTH MEMBER OF ANCHOR ATTACHMENT IN SOLID WALL Russian patent published in 1998 - IPC

FIELD: high-strength achorage in solid walls. SUBSTANCE: dense plastic plug is introduced into hole in solid wall providing for high- strength compressive joint between plastic plug and solid wall which simulates for high-strength chemical compound. Plug is introduced into hole in wall having the same size. The screw driven in plug has diameter equal to diameter of plug; plug is made from extrusion material, type polypropylene, high-density polyethylene and copolymers; screw driven in plug causes heavy compression of plastic between turns of thread and thin compressed film which covers turns of thread. Compressed areas of plastic ensure high resistance to removal of plug from wall. Plastic plug is provided additionally with one or more thin splits which are used for guiding the screw in its motion in center of plug providing for maximum degree of peripheral extrusion. EFFECT: enhanced reliability of anchorage. 10 cl, 4 dwg