| 摘要 |
A HOOK FOR TENSION SPRING IS DISCLOSED AND THE HOOK IS PROVIDED WITH AN OVAL SHAPED RING AND A MOUNTING O-RING INTEGRALLY CONNECTED BY A SHANK TO ONE END OF THE OVAL-SHAPED RING FOR SLIDABLY LAND MOVEABLY FITTED INTO A SPRING SUPPORT, CHARACTERIZED IN THAT ONE SECTION OF THE OVAL-SHAPED RING PROXIMITY TO THE SHANK CONNECTED THE O-RING IS PROVIDED WITH A HOOK MOUTH OPENED AT AN ANGLE RANGING FROM 40 TO 60 DEGREE AND THE CENTER OF THE OVAL-SHAPED RING IS AN OPENING HAVING A SLOT AT THE TOP OF THE OPENING, AND THE HOOK MOUTH IS IN COMMUNICATION WITH THE OPENING, AND THE SPRING SUPPORT IS PROVIDED WITH A VERTICAL SLOT SUCH THAT THE HOOK IS SAFETY FITTED INTO THE VERTICAL SLOT VIA THE HOOK MOUTH. THE OVAL SHAPED RING CAN BE RAPIDLY INSTALLED ONTO THE SPRING SUPPORT AND THE HOOK CAN BE EASILY UNLOADED BY ROTATING THE OVAL-SHAPED RING IN ONE DIRECTION SO THAT THE HOOK MOUTH IS DISENGAGED FROM THE VERTICAL SLOT. A METHOD OF MOUNTING THE HOOK ONTO A SPRING SUPPORT IS ALSO DISCLOSED.
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