FOUNDATION OF MAST Russian patent published in 2003 - IPC

FIELD: construction industry, members of mast structure. SUBSTANCE: foundation of mast includes rigid frame and four supporting posts used to confine frame and spreading from it along mutually diverging directions. Each supporting post has upper arm joined with its internal end to upper part of frame for turn around first horizontal turning axis with reference to frame and lower arm linked with its internal end to lower part of frame for turn with regard to frame around second horizontal turning axis. Two arms are interlinked with its external ends for turn one relative another and around third horizontal axis. At least one arm has variable length. Upper arm of each supporting posts includes two branches passing towards external end of mentioned arm in mutually converging directions and joined to frame for turn by means of one of two joints placed at some distance one from another in direction towards first horizontal turning axis. EFFECT: updated foundation of mast. 2 cl, 5 dwg