Patent ID: 8769746

Claim:
A support surface assembly for a sleeping person, said assembly comprising: a. four corner elements; b. four elongated, rigid frame sections defining a rectangular perimeter of said support surface assembly, each of said frame sections is provided with an upper edge, inner wall, and outer wall, wherein two adjacent and substantially mutually perpendicular frame sections are pivotally connected to a common corner element; and c. an air-permeable layer suspended on the upper edge of said frame sections, a plurality of peripheral portions being attached to said air-permeable layer, wherein each peripheral portion of the air-permeable layer is secured to a corresponding frame section, a frame contactable portion of the air-permeable layer being wrapped about said corresponding frame section upon application of a moment to each of said corresponding frame sections, whereby to tension said air-permeable layer and cause said corresponding frame sections to be coupled with two adjacent corner elements; wherein each of the two adjacent corner elements has a convex outer wall and an arcuate inner wall both of which subtending an angle of approximately 90 degrees, and two straight interface elements extending between said outer wall and said inner wall at each terminal end thereof, two apertures being bored in each of said interface elements by which a corresponding frame section is coupled with one of the two adjacent corner elements; and wherein the frame section has a cover member with a planar plate at each of its two longitudinal ends facing an adjacent one of the two adjacent corner elements, an axle by which the frame section pivots and a spring biased pin protruding from said cover member for engaging the two apertures, respectively, bored in an adjacent interface element of one of the two adjacent corner elements.