Cargo tie-down apparatus

Claim 1

IN COMBINATION: A LOWER CORNER MEMBER FOR A CARGO CONTAINER COMPRISING WALLS DEFINING AN UNDERSURFACE AND A RECESS EXTENDING UPWARDLY THEREFROM, AND A PAIR OF OPPOSING WALLS HAVING APERTURES DISPOSED ALONG A HORIZONTAL AXIS EXTENDING THROUGH SAID RECESS, ONE OF SAID APERTURES EXTENDING DOWNWARDLY AS A SLOT IN ONE OF SAID WALLS TO DIVIDE ITS LOWER EXTREMITY, THE OTHER APERTURE HAVING A CONTINUOUS PERIPHERY; AN ANCHOR MEMBER HAVING A BASE AND A STUD PROJECTING ABOVE THE BASE ADAPTED FOR EXTENSION INTO SAID RECESS WITH THE BASE ENGAGING SAID UNDERSURFACE; THE STUD HAVING A KEYWAY EXTENDING THERETHROUGH ALONG AN AXIS AND, WHEN POSITIONED IN THE CONTAINER MEMBER, COINCIDING GENERALLY WITH SAID AXIS OF THE MEMBER; SAID KEYWAY BEING ECCENTRICALLY ENLARGED TO DEFINE A RADIALLY OFFSET REGION ALONG AN INTERMEDIATE PORTION OF ITS LENGTH, AND A GROOVE EXTENDING LENGTHWISE OF THE KEYWAY FROM SAID REGION TO THE TERMINUS OF THE KEYWAY AT ONE SIDE OF THE STUD; THE ANGULAR EXTENT OF THE GROOVE ABOUT THE AXIS OF THE KEYWAY BEING SUBSTANTIALLY LESS THAN THAT OF SAID REGION; A KEY COMPRISING A HANDLE AND A PIN CONNECTED IN END-TO-END PIVOTAL RELATION WITH RESPECT TO AN AXIS PERPENDICULAR TO THE LENGTH OF THE PIN; THE PIN HAVING A LATERALLY PROJECTING LUG TRAVERSABLE THROUGH SAID GROOVE AND WHEN DISPOSED WITH THE LUG IN SAID REGION HAVING ITS END PORTION PROTRUDING INTO SAID CORNER MEMBER APERTURE OF CONTINUOUS PERIPHERY; SAID KEY BEING MOVABLE TO TRAVERSE THE LUG LENGTHWISE OF THE KEYWAY TOWARD SAID ONE SIDE OF THE STUD TO RETRACT SAID PROTRUDING PIN PORTION WITHIN THE STUD; SAID HANDLE, WITH SAID LUG POSITIONED IN SAID OFFSET REGION, FOLDING RELATIVELY TO THE PIN INTO SAID SLOT AND A RECESSED PORTION OF SAID BASE.