FIELD: furniture production. SUBSTANCE: sleeve has pyramidal body with side surfaces adapted for receiving chair legs and is provided with central cylindrical cavity for accommodating central rod of chair seat cushion. Lower part of each side surface of body is widened toward outside for defining inclined wing having at least one opening for receiving retaining screw to screw the wing in each leg from below. Each side surface has supporting member extending in radial direction and adapted for insertion into respective slot in each leg. EFFECT: enhanced reliability in usage and improved appearance. 12 cl, 4 dwg
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