The braking means comprises a plurality of disks kept in {TAIL ~ frictional contact} by {HEAD ~ at least one axially elastic element} 
The braking means comprises a plurality of disks kept in { TAIL ~ frictional contact } by { HEAD ~ at least one axially elastic element }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD