Device 3, wherein the impulse sending wheel is {TAIL ~ a cup shaped sheet metal piece} which is separately attached by an additional nut to a head of the axial fastening bolt of {HEAD ~ the device} and radially surrounds the nut  
Device 3 , wherein the impulse sending wheel is { TAIL ~ a cup shaped sheet metal piece } which is separately attached by an additional nut to a head of the axial fastening bolt of { HEAD ~ the device } and radially surrounds the nut
OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH