Patent ID: 8091160

Claim:
A foldable bed frame, which is expandable and collapsible into an open state and closed state, respectively, comprising: a plurality of first pivotal coupling members, each of which having a groove opening facing outwardly with respect to the bed frame being in the open state; a pair of longitudinal beams, each pair of longitudinal beams being formed by a pair longitudinal bars, each longitudinal bar having a free end and an inner end, wherein adjacent inner ends of each of the pair of longitudinal bars are pivotally connected together within one of the groove openings of one of the plurality of the first pivotal coupling members; a plurality of second pivotal coupling members; a pair of transverse beams, each transverse beam being formed by a pair of transverse bars, each transverse bar having a first end and a second end, wherein adjacent first ends of each of the pair of transverse bars are pivotally connected together by one of the plurality of second pivotal coupling members; a plurality of third pivotal coupling members each of which is respectively provided along an inner side of and proximate to each free end of the longitudinal bars, each third pivotal coupling member being configured to have an opening facing inwardly towards an opposing longitudinal beam while the bed frame is expanded to the open state, the opening of each third pivotal coupling member being configured to pivotally connect one of the second ends of one of the pair of transverse bars of each pair of transverse beams such that the transverse beams extend substantially normal to the longitudinal beams in the open state; and a plurality of legs, wherein a first portion of the plurality of legs comprises four legs that are independently movable, each of the four independently movable legs being pivotally connected to a corresponding lower side of the free end of each longitudinal bar.