Single-point tensioning door system for containers

A door for a container having a door frame with top, sides and bottom, said door including in combination:

• a flexible door panel having a top, sides and a bottom;
• attachment means for attaching said door panel top to said door frame top;
• an upper right pulley and means for attaching said upper right pulley to said door frame at the upper right corner;
• an upper left pulley and means for attaching said upper left pulley to said door frame at the upper left corner;
• a lower left pulley and means for attaching said lower left pulley to said door frame at the lower left corner;
• a lower right pulley and means for attaching said lower right pulley to said door frame at the lower right corner;
• upper and lower cable junction means for joining cables together;
• a first cable carried by said door panel;
• first means for anchoring one end of said first cable to said door frame at said lower right corner, with said first cable running over said upper right pulley to said upper cable junction means;
• a second cable carried by said door panel;
• second means for anchoring one end of said second cable to said door frame at said lower left corner, with said second cable running over said upper left pulley to said upper cable junction means;
• a third cable having both ends joined to said lower cable junction means and running over said lower right pulley and said lower left pulley;
• and
• a buckle having upper and lower ends connected to said upper and lower cable junction means, respectively, said buckle including means for tensioning said first, second and third cables by drawing said upper and lower cable junction means toward each other.