Expandable modular wall file with hidden attachment and support means

A modular expandable wall-file system for use in storing documents on a wall comprising:

• at least first and second identical pocket modules, each pocket module comprised of a substantially vertical back wall, having an upper side and a lower side, and a front wall, said back and front walls defining an interior of said each pocket module for receiving the documents;
• said front wall of each pocket module extending outwardly at an angle from said back wall of each pocket module to form a substantially triangular cross-section such that a bottom end of said first pocket module may be inserted into a top opening of said second module with the interior of the second module still accessible in a space formed between the front walls of the respective modules;
• means for interconnecting said first and second modules comprised of:
• a hook portion on the lower back wall of the first module comprised of a recess and an L-shaped hook member extending outwardly therefrom;
• an aperture portion on the upper back wall of the second module comprised of an aperture and a substantially rectangular recess adjacent to said aperture for receiving the first module's L-shaped hook member when the bottom end of the first module is inserted into the top opening of the second module with the lower back wall of the first module adjacent to the upper back wall of the second module,
• said hook and aperture portions being located entirely on the back walls of the respective modules so that the interconnecting means is not visible after the modules are mounted against the wall;
• and
• said hook and aperture portions being dimensioned such that, after interconnection, the back walls of the first and second modules are flush with one another against the wall.

A module expandable wall file apparatus comprising:

• at least first and second separate identical pocket modules, each pocket module having an interior defined by a bottom, a substantially vertical back wall, a front wall extending outwardly at an angle from the vertical, and first and second side walls extending outwardly at an angle from the vertical, whereby a bottom end of the first pocket module may fit into a top end of the second pocket module such that a portion of their respective back walls are adjacent to one another;
• hidden interconnecting means, located on the back wall of each pocket module, for interconnecting the back wall of the first pocket module to the back wall of the second pocket module, wherein the interconnecting means is comprised of hook portions defined at a lower end of the back wall of each module and aperture portions defined at an upper end of the back wall of each module;
• and
• means for attaching the interconnected pocket modules to the wall.