Inexpensive and disassemblable structural units

A class of non-permanent structures characterized by locking and interlocking panels of uniform thickness which may be assembled in a variety of modes to provide a plurality of different structures, said panels including:

• a. a first plurality of rectangular panels, each such first panel having:
• 1. a first plurality of slots of a first predetermined length, said first slots extending longitudinally along a first long edge of said first panel in a uniformly spaced array, with each of said first slots having a width equal to said uniform thickness;
• and
• 2. a second plurality of slots of a second predetermined length, said second slots extending perpendicularly to said first long edge of said first panel and being spaced at intervals along said first long edge thereof, said second slots also having a width equal to said uniform thickness;
• and
• b. a second plurality of longitudinal vertical panels, each such panel having:
• 1. a first plurality of tabs of said first predetermined length, said first tabs extending along a first long edge of said second panel in a uniformly spaced array corresponding to the spaced array of said first slots of said first panel so as to be engageable therewith;
• 2. a second plurality of tabs of one-half said first predetermined length, said second tabs extending along a second long edge of said second panel in a uniformly spaced array and positioned thereon so as to be engageable, in a first relative orientation of said first and second panels, and engageable in a second relative orientation of said first and second panels, within the other half of the first slots of said first panels;
• and
• 3. a third plurality of slots of said second predetermined length, said third slots extending perpendicularly to the long edges of said second panel and being spaced therealong in manner identical to the spacing of said second slots of said first panel;
• and
• c. a third plurality of transverse vertical panels, each such third panel having:
• 1. a third plurality of tabs of said second predetermined length positioned along a first edge of said third panel, said third tabs being engageable with second slots of said first panel;
• 2. a fourth plurality of tabs, each comprising one-half of said third tab and half of said second predetermined length, positioned along a second edge of said third panel, said second edge of said third panel being disposed on opposite side of said third panel from first edge, said half tabs positioned thereon so as to be engageable with the fourth half-tabs of another said third panel within the second slots of said first panel;
• and
• 3. a fifth plurality of tabs of said second predetermined length positioned along a third edge of said third panel and intermediate to said first and second edges thereof, so as to be engageable with said third slots of said second panel when said first, second, and third panels are joined at right angles to each other.