초록 ▼

A portable articulated support device has an articulated quadrilateral frame having four straight sides formed of elongate thin rectangular panels pivotally connected at opposed ends with opposed sides disposed in parallel spaced relation. The frame can be expanded and collapsed between a generally

A portable articulated support device has an articulated quadrilateral frame having four straight sides formed of elongate thin rectangular panels pivotally connected at opposed ends with opposed sides disposed in parallel spaced relation. The frame can be expanded and collapsed between a generally rectangular configuration and a generally diamond-shaped rhombus configuration to be supported in a generally horizontal plane upon the lap of a seated user for supporting various objects on the lap of the seated user. A first pair and a second pair of the panels each are pivotally connected together at a first end, and the first pair and second pair of panels are pivotally and detachably connected together at a second end. The first pair of panels can be detached from the second pair of panels and each pair can be pivoted about their first end to assume an overlapped parallel superposed relation for compact storage.

대표청구항 ▼

1. A portable articulated support device for supporting objects on the lap of a seated user, comprising: an articulated quadrilateral frame having four straight sides connected at four corners with opposed sides disposed in parallel spaced relation, said sides formed of elongate thin rectangular pan

1. A portable articulated support device for supporting objects on the lap of a seated user, comprising: an articulated quadrilateral frame having four straight sides connected at four corners with opposed sides disposed in parallel spaced relation, said sides formed of elongate thin rectangular panels formed of rigid material;said rectangular panels comprising a first pair of said rectangular panels and a second pair of said rectangular panels, each pair formed of a top panel and a bottom panel, said top panel and said bottom panel superposed and pivotally joined together at first ends by a first pivot pin connector extending therethrough adjacent to said first end to provide relative angular movement therebetween, each said top panel having a second pivot pin connector adjacent to a second end thereof extending from a bottom surface thereof longitudinally spaced from, and axially aligned with said first pivot pin connector, and each said bottom panel having a generally V-shaped aperture extending transversely inwardly from a lateral side thereof adjacent a second end thereof terminating in communication with a central bore longitudinally spaced from, and axially aligned with, said second pivot pin connector to receive and releasably engage said second pivot pin connector in said central bore in a snap fit relation;in an assembled condition, said frame being pivotally movable between an expanded generally rectangular shape and a collapsed generally diamond-shaped rhombus to be supported in a generally horizontal plane upon the lap of the seated user; and said rectangular panels forming flat support surfaces for receiving and supporting objects on the lap of the seated user; andin a detached condition, said top panel and said bottom panel of each of said first pair and said second pair of rectangular panels is pivoted about said first pivot pin connector to assume an overlapped parallel superposed relation for compact storage. 2. The portable articulated support device according to claim 1, wherein said quadrilateral frame is of a parallelogram configuration and said opposed straight sides are of equal length. 3. The portable articulated support device according to claim 1, wherein in said assembled condition, said second pivot pin connector of said top panel of said first pair of said rectangular panels is received in said V-shaped slot and releasably engaged in said central bore of said bottom panel of said second pair of rectangular panels such that said first pair of said rectangular panels and said second pair of rectangular panels are pivotally and detachably connected together; andin said detached condition for compact storage, said second pivot pin connector of said top panel of said first pair of said rectangular panels is laterally withdrawn from said central bore and V-shaped slot of said bottom panel of said first pair of said rectangular panels; andsaid top panel and said bottom panel of each said pair of rectangular panels are pivoted toward one another about said first pivot pin connector extending therethrough to assume an overlapped parallel superposed relation such that said second pivot pin connector of said top panel is received in said V-shaped slot and releasably engaged in said central bore of said bottom panel in a snap fit relation.