Referring to FIG 3, {TAIL ~ another preferred embodiment} in {HEAD ~ accordance} with the present invention is shown in a cross sectional view 
Referring to FIG 3 , { TAIL ~ another preferred embodiment } in { HEAD ~ accordance } with the present invention is shown in a cross sectional view
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH