BANISTERS FOR SPIRAL STAIRS AND METHOD OF THEIR MANUFACTURE Russian patent published in 1997 - IPC

FIELD: civil engineering. SUBSTANCE: banisters have reinforcement made from a continuous rod of preset longitudinal spacious configuration which is dictated by geometrical form of stairs, and handrail created of components in the form of disks with slot which is larger than diameter of reinforcement rod and filled with compound containing filler of handrail component material which are connected with it and between each other to create common surface over entire length of rod. Handrail is treated till producing needed configuration over entire length of banisters and in their cross section. EFFECT: high efficiency. 3 cl, 4 dwg