{HEAD ~ A device} 3 wherein said {TAIL ~ clamp means} is comprised of a rigid clamp block and a movable clamp pad so as to permit a flexible sheet of foam material to be clamped therebetween 
wherein
{ HEAD ~ A device } 3 wherein said { TAIL ~ clamp means } is comprised of a rigid clamp block and a movable clamp pad so as to permit a flexible sheet of foam material to be clamped therebetween
HEAD HEAD HEAD HEAD HEAD HEAD OTH REL 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