US Patent 10258120 Multiple-fold frame assembly

A foldable frame is disclosed. The foldable frame contains at least one multiple-fold frame assembly containing an inner intermediate stretcher rib containing a first end and a second end, an outer intermediate stretcher rib containing a first end and a second end, and an outer leverage arm containing a first end and a second end, wherein the inner intermediate stretcher rib's second end is pivotally coupled with the outer intermediate stretcher rib's second end, wherein the outer leverage arm's second end is pivotally coupled with the outer intermediate stretcher rib adjacent to the first end, wherein the outer leverage arm's second end is pivotally coupled with the outer intermediate stretcher rib a first distance from the first end.