Suspension grid for ceilings

Claim 1

A SUSPENSION GRID FOR SUSPENDED CEILINGS COMPRISING A RUNNER HAVING A VERTICAL WEB AND HORIZONTAL FLANGES AT THE BOTTOM OF SAID WEB, A FIRST CROSS-MEMBER HAVING A VERTICAL WEB AND HORIZONTAL FLANGES AT THE BOTTOM OF ITS WEB, SAID CROSS-MEMBER ENDWISE ABUTTING ONE SIDE OF SAID RUNNER IN GRID-FORMING POSITION, A SECOND CROSSMEMBER HAVING A VERTICAL WEB AND HORIZONTAL FLANGES AT THE BOTTOM OF ITS WEB, SAID SECOND CROSS-MEMBER ENDWISE ABUTTING THE OTHER SIDE OF SAID RUNNER IN LONGITUDINAL ALIGNMENT WITH SAID FIRST CROSS-MEMBER, SAID RUNNER HAVING A HOLE THROUGH ITS WEB, SAID HOLE BEING IN ALIGNMENT WITH THE ABUTTING ENDS OF SAID CROSS-MEMBERS, EACH OF SAID CROSS-MEMBERS HAVING AN ELONGATED PIN-RECEIVING TUBULAR PORTION AS PART OF AND PARALLEL TO THEIR RESPECTIVE WEBS, SAID TUBULAR PORTIONS BEING IN ALIGNMENT WITH EACH OTHER AND WITH SAID HOLE IN SAID RUNNER WEB, ALL OF SAID FLANGES IN ASSEMBLED GRID-FORMING POSITION BEING IN SUBSTANTIALLY THE SAME PLANE, A PIN EXTENDING FROM WITHIN THE TUBULAR PORTION OF SAID FIRST CROSS-MEMBER THROUGH THE HOLE IN THE WEB OF SAID RUNNER AND INTO THE TUBULAR PORTION OF SAID SECOND CROSS-MEM BER, SAID HOLE BEING IN THE UPPER PORTION OF THE WEB OF SAID RUNNER, SAID CROSS-MEMBERS BEING SHEET MATERIAL BENT TO PROVIDE FACE-WISE ABUTTING LAYERS FORMING THE WEB OF EACH CROSS-MEMBER WITH THE BEND CONNECTING THE LAYERS BEING ENLARGED TO PROVIDE SAID TUBULAR PINRECEIVING PORTIONS FOR EACH CROSS-MEMBER, RESPECTIVELY, SUCH THAT THE TUBULAR PORTIONS ARE RIDGES AT THE TOP OF THEIR RESPECTIVE WEBS AND HAVE THEIR AXES IN SUBSTANTIALLY THE SAME PLANE AS THEIR RESPECTIVE WEBS.