FIELD: rung ladders. SUBSTANCE: rung ladder has a stairs section with a landing and a post with a hooked grip and a bearing cross-piece. With one end face the landing is hinge-joined to the stairs section, with the opposite end face it is hinge-joined to the support. The landing is secured around the edges by shoulders. The bearing cross-piece on its two ends is welded to ribbed V-shaped bearing members. EFFECT: enhanced safety and convenience in use. 4 dwg
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