It is therefore {HEAD ~ an object} of this invention to overcome the above mentioned drawbacks and to provide {TAIL ~ an improved rubber boot} 
to provide
It is therefore { HEAD ~ an object } of this invention to overcome the above mentioned drawbacks and to provide { TAIL ~ an improved rubber boot }
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL