| 摘要 |
A configurable briefcase desktop having two generally planar support columns, each support column having a fixed length section and an extendable section. The extendable section of each support column is comprised of a scissors linkage and an elongated foot member. The elongated foot member provides improved load distribution across the surface supporting the invention. Embodiments typically include a fold lock mechanism to releasably lock each support column in its folded configuration. Other embodiments have a support stiffening mechanism adapted to yieldably resist movement of its respective support member from its support configuration. Further embodiments comprise at least one load sensor system to provide a warning signal when the extendable section of a support column is in extended configuration and subjected to a compression force in excess of a predetermined amount. In some embodiments the fold lock mechanism and support stiffening mechanism of a particular support column may be mechanically ganged.
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