COLLAPSIBLE FORM FOR COLUMN PRODUCTION Russian patent published in 2008 - IPC B28B7/24 E04G13/02 

FIELD: concrete and reinforced concrete column production, particularly ones having round cross-sections.

SUBSTANCE: collapsible form comprises tray, walls, at least one partition and fastening members. The partition is made as pipe with longitudinal blades and may reciprocate and rotate in clockwise and counterclockwise directions. Blades adjoin wall and are arranged between two partitions. One partition rests upon wall.

EFFECT: extended functional capabilities and possibility to produce columns having different surface appearances.

4 cl, 4 dwg