Supporting stand for rebound tumbling apparatus

Claim 1

A ROLLER STAND FOR REBOUND TUMBLING APPARATUS HAVING A PLURALITY OF SECTIONS COLLAPSIBLE INTO A FLAT RECTANGULAR FOLDED UNIT WITH A CENTRAL BISECTING AXIS, SAID STAND COMPRISING, IN COMBINATION, A SUPPORT OF INVERTED T SHAPE WITH A POST AND CROSSBAR NORMAL TO THE POST AT ONE OF ITS ENDS, CASTER WHEELS DISPOSED BELOW AND MOUNTED ADJACENT OPPOSITE ENDS OF SAID CROSSBAR TO SWIVEL ABOUT UPRIGHT AXES WHEN SAID POST IS IN AN UPRIGHT POSITION, A MEMBER SECURED TO THE UPPER END OF SAID POST AND ADAPTED FOR PIVOTAL CONNECTION WITH SAID FOLDED UNIT AT ONE SIDE OF THE UNIT AND ALONG SAID AXIS WHEREBY TWO STANDS SO CONNECTED AT OPPOSITE SIDES OF THE UNIT LOCATE THE AXIS HORIZONTALLY AND SUPPORT THE UNIT FOR SWINGING ABOUT THE AXIS WHEN THE WHEELS OF THE TWO STANDS ENGAGE A HORIZONTAL SUPPORTING SURFACE AND THE POSTS ARE UPRIGHT, A STOP ON SAID POST ENGAGEABLE WITH SAID FOLDED UNIT TO LIMIT SWINGING THEREOF IN EITHER DIRECTION ABOUT SAID HORIZONTAL AXIS AND COMPRISING A SHANK JOURNALED IN THE POST TO SWING ABOUT AN AXIS NORMAL TO THE POST AND PARALLEL TO THE HORIZONTAL AXIS AND A HOOK OF U SHAPE EXTENDING FIRST LATERALLY IN ONE DIRECTION FROM ONE END OF THE SHANK, THEN TRANSVERSELY AND LONGITUDINALLY OF THE SHAFT AND FINALLY REVERSELY TO PROVIDE SPACED LEGS JOINED BY A CROSS PORTION AND DISPOSED TRANSVERSELY OF THE SHANK, AND RELEASABLE MEANS HOLDING SAID SHANK ASSEMBLED ROTATABLY IN SAID POST WHILE PERMITTING SELECTIVE REMOVAL AND REPLACEMENT OF THE SHANK.