| 摘要 |
THE POD COMPRISES A CENTRAL MAST (1, 8), A SUPPRT SECTION (9) OF WHICH BEARS ENDS OF ARMS (30) PIVOTALLY MOUNTED SO THAT RESPECTIVE OPPOSED FREE SECTIONS (32) ARE, IN A POSITION FOLDED BACK AGAINTS THE MAST (1, 8), MAINTANED BY A REMOVABLE LOCKING DEVICE COMPRISING AN AXIALLY MOVABLE CROWN MEMBER (10) FOR RADIALLY LOCKING THE ARMS (30), THE CROWN MEMBER (10) BEING HELD IN LOCKING POSITION THROUGH A HYSTERESIS EFFECT IN WHICH THE CROWN MEMBER (10) CAN BE DRIVEN, THROUGH THE EXPANSION OF A LOADED SPRING (20), IN A MOVEMENT OF RECOIL FROM ITS LOCKING CONDITION, ONLY AFTER ADDITIONAL LOADING OF THE SPRING (20) BY AN EXTERNAL FORCE IN ORDER TO RELEASE A MOBILE STOP (21), FOR INHIBITING THE ACTION OF THE SPRING (20), HELD IN PRECARIOUS ANTI-RECOIL STOP EQUILIBRIUM BY THE CROWN MEMBER (10).(FIG 4)
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