In this connection, if the clasp assumed a longitudinal position, i.e., a position in which the coupled direction is perpendicular to the users body, {HEAD ~ the tension} on {TAIL ~ the clasp} would act as a force effective to pull apart the metallic parts on the lever principle if the body surface has a sharp curve 
In this connection , if the clasp assumed a longitudinal position , i.e. , a position in which the coupled direction is perpendicular to the users body , { HEAD ~ the tension } on { TAIL ~ the clasp } would act as a force effective to pull apart the metallic parts on the lever principle if the body surface has a sharp curve
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