The elastomeric mat includes {HEAD ~ a distributed array} of {TAIL ~ hollow protuberances} that extend toward and contact the force translation plates, and the mat has a stiffness that normally provides a clearance between the switch mechanism and one of the force translation plates 
The elastomeric mat includes { HEAD ~ a distributed array } of { TAIL ~ hollow protuberances } that extend toward and contact the force translation plates , and the mat has a stiffness that normally provides a clearance between the switch mechanism and one of the force translation plates
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL 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