Patent ID: 7203980

Claim:
A collapsible three-sided mounting frame for supporting a rigid, rectangularly shaped raised platform and providing an access opening to the volume of space beneath said platform comprising: a first end frame assembly for attachment to an underside of said raised platform, said first end frame assembly having first and second spaced apart vertical posts and a plurality of first horizontal support members attached to and extending between said first and second vertical posts to retain said first and second vertical posts in parallel and coplanar relationship; a second end frame assembly for attachment to said underside of said platform, said second end frame assembly being a second side of said three-sided mounting frame, said second end frame member having third and fourth spaced apart vertical post and a plurality of second horizontal support members attached to and extending between said third and fourth vertical posts to retain said third and fourth vertical posts in parallel and coplanar relationship; a single folding horizontal frame stabilizer pivotally connected at a first end to said first vertical post and pivotally connected at a second end to said third vertical post, said horizontal frame stabilizer being a third side of said three-sided mounting frame, said single stabilizer comprising: first and second spaced apart vertical leg members; a plurality of horizontal support links of equal length, said links attached to and extending between said first and second vertical leg members to retain said first and second leg members in parallel relationship, each of said links having a hinge at a midpoint along said length of each of said links, said hinge movable from a first collapsed position wherein each of said plurality of horizontal support links is parallel to said plurality of first horizontal support member and said plurality of second horizontal support members to a second extended position wherein each of said plurality of horizontal support links is perpendicular to said plurality of first horizontal support members and said plurality of second horizontal support members, said first end frame, said second end frame, and said single folding horizontal stabilizer cooperating to provide said access opening.