Traylike rebound unit

Claim 1

A REBOUND BED INCLUDING: A REBOUND MAT; AN ENDLESS FRAME WHICH PREDOMINANTLY EXTENDS HORIZONTALLY AND SPACEDLY SURROUNDS THE MAT AND HAS A PLURALITY OF ELONGATED, STRAIGHT SIDES AND, ALTERNATING THEREWITH, A CORRESPONDING PLURALITY OF STUB POSTS; EACH STRAIGHT SIDE INCLUDING AN ELONGATED TRANSVERSELY RESILIENTLY YIELDABLE STRIP SPRING AND AN APPROXIMATELY AS LONG ANGLE/RAIL HAVING AN UPPER LEG WHICH IS SUBSTANTIALLY PROSTRATE AND INWARDLY DIRECTLY, AND, DESCENDING FROM IT, AN OUTER LEG, THE ANGLE/RAIL ROOT CONFRONTING THE MAT, THE ANGLE/RAIL TWO ENDS, WHICH ARE ENDS OF SAID LEGS, BEING RIGIDLY, AT LEAST INDIRECTLY, AFFIXED TO TWO SAID STUB POSTS RESPECTIVELY, EACH STRIP SPRING BEING CURVED TO BRING THE TWO LONG MARGINS THEREOF INTO ADJACENCY, THEREBY FORMING A "TUBE," SAID MARGINS BEING RIGIDLY HELD BY THE ANGLE/RAIL UPPER LEG; RIGIDLY HELD BY EACH ANGLE/RAIL, AT THE MUTUALLY ANGULARLY CONFRONTING OR INNER SURFACES OF THE TWO LEGS, A PLURALITY OF ELONGATED ANCHORING MEANS DISPOSED TRANSVERSELY TO THE ANGLE/RAIL AXIS AND SUCCESSIVELY PARALLELWISE SPACED, WHEREBY EACH OF THE TWO LEGS IS STIFFENED AND BOTH ARE MUTUALLY BRACED; A MAT-SUPPORTING MEANS INTERVENTINGLY CONNECTING THE MAT MARGINS AND SAID ANCHORING MEANS, AND MAINLY CONSISTING OF RESILIENTLY STRETCHABLE HOLDERS IN A PLURALITY OF GROUPS CORRESPONDING TO THE PLURALITY OF SAID SIDES OF THE FRAME; A PLURALITY OF ELASTIC APRONS, AT LEAST ONE FOR EACH SAID SIDE, THE TOTAL APRON LENGTH IN EACH SIDE APPROXIMATING THAT OF THE RESPECTIVE STRIP SPRING, EACH APRON HAVING A MAT-DISTAL OR OUTER EDGE AND A MATPROXIMAL OR INNER EDGE; AN APRON OUTER EDGE HOLDING MEANS ENGAGING A RESPECTIVE ANGLE/RAIL OUTER LEG, AND AN APRON INNER EDGE HOLDING MEANS HOLDING THE INNER EDGE AGAINST SUBSTANTIAL MOVEMENT RELATIVE TO, WHILE NEIGHBORING, THE MAT; EACH APRON OBLIQUELY EXTENDING, UPWARDLY AND OUTWARDLY FROM, THE RESPECTIVE STRIP SPRING AND EXTEND DOWNWARDLY FROM, THE RESPECTIVE STRIP SPRING AND TERMINATE IN THE RESPECTIVE APRON OUTER EDGE HOLDING MEANS.