Play pen

Claim 1

A FOLDABLE PLAY PEN, COMPRISING: A PAIR OF SPACED CONNECTOR PLATES; A PAIR OF U-SHAPED TOP RAILS NORMALLY DISPOSED UNFOLDED IN A HORIZONTAL PLANE AND DISPOSED ADJACENT OPPOSITE ENDS OF SAID CONNECTOR PLATES, THE ENDS OF ONE OF SAID RAILS CONFRONTING THE ENDS OF THE OTHER AND PIVOTALLY CONNECTED TO SAID CONNECTER PLATES TO FORM A FOLDABLE RECTANGULAR FRAMEWORK IN WHICH EACH RAIL IS FOLDABLE DOWNWARDLY TO A MUTUAL SUBSTANTIALLY PARALLEL ARRANGEMENT; A PAIR OF FOLDABLE U-SHAPED LEG-FORMING FRAMES PIVOTALLY CONNECTED AT THEIR UPPER ENDS TO SAID CONNECTER PLATES INTERCONNECTING SAID PLATES, FOR SUPPORTING SAID FRAMEWORK, SAID LEG FRAMES BEING MOVABLE FROM A NORMALLY EQUALLY EXTENDED UNFOLDED POSITION TO A FOLDED SUBSTANTIALLY VERTICAL AND PARALLEL ARRANGEMENT; A VERTICAL USHAPED LEG-FORMING FRAME FIXED AT ITS UPPER ENDS TO SAID CONNECTER PLATES INTERCONNECTING THEM AND DISPOSED BETWEEN SAID FOLDABLE LEG FORMING FRAMES, SAID VERTICAL LEGFORMING FRAME EXTENDING TO THE PLANAR GROUND SUPPORT OF SAID FOLDABLE LEG-FORMING FRAMES WHEN SAID FOLDABLE LEGFORMING FRAMES ARE NORMALLY UNFOLDED, AND SAID VERTICAL LEG FORMING FRAME BEING RETRACTIBLE FROM ITS GROUND ENGAGEABLE POSITION WHEN THE FOLDABLE LEG-FORMING FRAMES ARE FOLDED, EACH OF SAID LEG-FORMING FRAMES HAVING UPSTANDING LEG MEMBERS AND A CROSS MEMBER ADJACENT THE LOWER ENDS THEREOF; A FLOOR COMPRISING A PAIR OF EQUAL LENGTH FLOOR PANELS HINGEDLY CONNECTED AT THEIR ADJACENT ENDS, AND SAID FLOOR BEING PIVOTALLY SUPPORTED AT ITS REMOTE ENDS ON THE CROSS MEMBERS OF THE NORMALLY UNFOLDED FOLDABLE LEG-FORMING FRAMES, RESPECTIVELY, SAID HINGE AXIS AND PIVOTAL AXES BEING MUTUALLY PARALLEL, WHEREBY TO FOLD SAID FLOOR PANELS UPWARDLY WHEN THE FOLDABLE LEG-FORMING FRAMES ARE MOVED TOWARD ONE ANOTHER, AND WHEREBY SAID FLOOR IS SUPPORTED ON THE CROSS MEMBER OF SAID VERTICAL LEG-FORMING FRAME WHEN THE FOLDABLE LEG-FORMING FRAMES ARE NORMALLY UNFOLDED; AND MEANS FOR CROSS-BRACING SAID TOP RAILS AND SAID LEG-FORMING FRAMES, COMPRISING A SLEEVE SLIDABLY ENGAGED ON EACH OF THE LEG MEMBERS OF THE VERTICAL LEG-FORMING FRAMES, A PAIR OF LEVERS PIVOTALLY CONNECTED AT THEIR LOWER ENDS TO EACH OF SAID SLEEVES, RESPECTIVELY, AND EACH LEVER OF SAID PAIR BEING ALSO PIVOTALLY CONNECTED INTERMEDIATE ITS ENDS TO AN ADJACENT LEG MEMBER OF A FOLDABLE LEG-FORMING FRAME, RESPECTIVELY, AND LINKS PIVOTALLY INTERCONNECTING THE FREE ENDS OF SAID LEVERS AND THE CORRESPONDING ADJACENT TOP RAILS, RESPECTIVELY, SAID LINKS BEING NON-ALIGNED WITH THEIR ASSOCIATED LEVERS IN AN OVER-THE-CENTER RELATION WHEREBY TO LOCK THE TOP RAILS IN THEIR NORMALLY UNFOLDED POSITION, AND WHEREBY SAID CROSSBRACING MEANS IS ADAPTED TO PERMIT THE FOLDABLE LEG-FORMING FRAMES AND TOP RAILS TO FOLD ADJACENT THE VERTICAL LEGFORMING FRAME INTO A SUBSTANTIALLY PARALLEL ARRANGEMENT.