DEVICE FOR REPAIR OF HOLES WITH TORN EDGES IN WALL OF RESERVOIR Russian patent published in 1998 - IPC

FIELD: mechanical engineering; repair of holes in stiff reservoirs in filled state; repair of holes in ship's hulls. SUBSTANCE: device is provided with shaped drawing rod, retainer, sealing ring, stiffeners with bent edges, flexible patch, endless flexible rod, bush with lever, shaped rigid support with sealing gasket, additional rigid support and extender. Outer end of shaped drawing rod is provided with external thread for nut and internal thread for extender. Opposite end of shaped rod is provided with radial slots. Stiffeners have holes at their ends. Flexible patch is made with central hole and is provided with gaskets and hinges. Bush is provided with two segment recesses at its end surface and with washer. Shaped rigid support has central and radial holes and pipe union. Additional rigid support is provided with central hole. Extender has hole and thread for nut. Retainer includes pins, locking ring and compression spring. EFFECT: enhanced reliability. 5 dwg