Patent ID: 8196344

Claim:
An arrangement of modular plant tower assemblies, comprising: (a) a first generally pyramidal plant tower assembly comprising: i. a self-supporting vertical framework of rigid vertical supports defining a relatively large base, and extending inwardly and upwardly from said base to a smaller top of said vertical framework; ii. upper and lower vertically spaced horizontal closed-end frameworks of respective rigid horizontal supports, said horizontal supports of each horizontal framework being interconnected at their respective ends and surrounding said vertical framework at a location intermediate said base and said top; and iii. at least one of said horizontal supports of each horizontal framework comprising a lateral bridge connector; (b) a second generally pyramidal plant tower assembly spaced apart from said first plant tower assembly, and comprising: i. a self-supporting vertical framework of rigid vertical supports defining a relatively large base, and extending inwardly and upwardly from said base to a smaller top of said vertical framework; ii. upper and lower vertically spaced horizontal closed-end frameworks of respective rigid horizontal supports, said horizontal supports of each horizontal framework being interconnected at their respective ends and surrounding said vertical framework at a location intermediate said base and said top; and iii. at least one of said horizontal supports of each horizontal framework comprising a lateral bridge connector; and (c) upper and lower vertically spaced horizontal bridge frames spanning said first and second spaced apart tower assemblies, and each bridge frame comprising elongated rigid horizontal bridge supports secured to respective lateral bridge connectors of each upper and lower horizontal framework of said first and second spaced apart tower assemblies, whereby said upper horizontal bridge frame defines a relatively large opening compared to a relatively small opening defined by said lower horizontal bridge frame, such that a space between said first and second tower assemblies is substantially inverse to a generally pyramidal form of each tower assembly.