In the case of {HEAD ~ the clasp} of the present invention, {TAIL ~ such tension} acts on the junction between the projection 26 and the groove 16 and is resisted by the mechanical coupling force at the junction, so that said coupling will never be destroyed no matter how high a tension acts on the clasp 
In the case of { HEAD ~ the clasp } of the present invention , { TAIL ~ such tension } acts on the junction between the projection 26 and the groove 16 and is resisted by the mechanical coupling force at the junction , so that said coupling will never be destroyed no matter how high a tension acts on the clasp
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH