Releasable suspension device for swing seat

Claim 1

A SUSPENSION DEVICE FOR RELEASABLY SUSPENDING AN INFANT SEAT AND THE LIKE FROM OPPOSITE SIDES OF A WALL ABOVE AN OVERHEAD DOOR FRAME COMPRISING, A PAIR OF PIVOTALLY INTERCONNECTED SUSPENSION ARM MEMBERS EACH HAVING UPPER AND LOWER, VERTICALLY EXTENDING ARM PORTIONS AND AN INTERMEDIATE ANGULAR PORTION JOINING THE UPPER AND LOWER ARM PORTIONS OF EACH SUSPENSION ARM MEMBER, SAID ANGULAR PORTIONS BEING PIVOTALLY INTERCONNECTED RELATIVELY NEAR SAID LOWER ARM PORTIONS AND AWAY FROM SAID UPPER ARM PORTIONS, WHEREBY THE MOMENT OF DOWNWARD FORCE APPLIED ACROSS SAID LOWER ARM PORTION IS REDUCED WHEN APPLIED ACROSS SAID UPPER ARM PORTION IS REDUCED WHEN THE INCREASED LENGTH OF SAID UPPER ARM PORTION WITH RESPECT TO SAID LOWER ARM PORTIONS, SAID UPPER ARM PORTIONS EACH TERMINATING IN AN UPPER CLAMPING END PORTION ARRANGED FOR INWARD EXTENSION TOWARD THE OTHER CLAMPING END PORTION, FLEXIBLE CONNECTING MEANS FOR SUSPENSION OF THE INFANT SEAT IN DOWNWARDLY DEPENDING RELATION FROM THE LOWER TERMINAL ENDS OF SAID LOWER ARM PORTIONS, AND A TENSION SPRING BETWEEN SAID UPPER ARM PORTIONS BEING BIASED TO NORMALLY URGE SAID UPPER CLAMPING END PORTIONS INTO CLAMPING ENGAGEMENT WITH OPPOSITE SIDES OF THE WALL ABOVE THE OVERHEAD FRAME.