FIELD: construction.
SUBSTANCE: floor panels are equipped with a mechanical locking device, comprising a dowel and grooves, and are made with ledges and grooves, which are displaced relative to each other and have such shape that ledges may occupy vertically unfixed position, in which they correspond to grooves, and vertically fixed position, in which ledges cover each other.
EFFECT: increased strength of panels fixation.
24 cl, 51 dwg
Authors
Dates
2013-06-20—Published
2009-01-30—Filed