FIELD: aerial equipment. SUBSTANCE: hinges 4 are installed in intermediate platform 5 manufactured, for instance, in the form of orthogonal tetrahedron. Orthogonal platform with orthogonally directed toothed sectors 6 and 10 facing each other with their bevels 12 form monolithic rigid spatial power structure together with braces. EFFECT: enhanced structural reliability. 2 dwg
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Authors
Dates
1994-08-30—Published
1990-11-19—Filed