FIELD: universal collapsible bar constructions. SUBSTANCE: construction has bars assembled into bar-type frame of at least one post and at least pair of height-spaced girth rails joined to post by means of docking device; bars are hollow or have pockets in docking device areas; cavities or pockets have different sizes of relatively perpendicular axes of this cross-sections. EFFECT: enhanced service life; enlarged functional capabilities. 18 cl, 17 dwg
Authors
Dates
2003-07-10—Published
2002-07-17—Filed