The top cover of the improved assembly has an integral pressure blade which extends downward to apply {TAIL ~ pressure} to {HEAD ~ the cover material} 
The top cover of the improved assembly has an integral pressure blade which extends downward to apply { TAIL ~ pressure } to { HEAD ~ the cover material }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD