Extendible table

An extendible table comprising:

• a lower load-supporting tabletop having lower-tabletop upper and lower surfaces and at least one lower-tabletop edge;
• an upper load-supporting tabletop, slidably overlapping said lower load-supporting tabletop, having:
• an upper-tabletop lower surface slidably engaged with said lower-tabletop upper surface;
• at least one sliding guide constraining said upper-tabletop lower surface to slide continuously along a sliding extension path traversing at least a portion of said lower-tabletop upper surface;
• at least one upper-tabletop edge, less than about 5 mm thick, that traverses at least a portion of said lower-tabletop upper surface as said upper-tabletop lower surface traverses said sliding extension path, said at least one upper-tabletop edge delineating variable overlapping and non-overlapping portions of said lower-tabletop upper surface;
• and
• an upper-tabletop upper surface that forms in combination with said non-overlapping portions of said lower-tabletop upper surface a substantially continuous combined-tabletop surface having an extendible combined-tabletop horizontal dimension that varies continuously as said upper-tabletop lower surface traverses said sliding extension path;
• and
• at least one support member affixed to a selected one of said lower tabletop and said upper tabletop to support said combined-tabletop surface in a substantially horizontal position when the extendible table is in use.