BULKY BODY FORMING APPARATUS Russian patent published in 1994 - IPC

FIELD: cultural and educational amenities. SUBSTANCE: apparatus has four rings. Two recesses are made on inner and outer side of each ring. Depth of each recess is equal to half the ring width and width of recess is at least equal to thickness of ring. Recesses are extending parallel one with respect to the other and are equally spaced from axis of symmetry of each ring. Recesses on inner side of each ring as well as recesses on outer side of rings are in opposed relation one with respect to the other. EFFECT: wider operational capabilities and enhanced reliabilities in operation. 3 dwg