In {HEAD ~ order} to provide {TAIL ~ a contact preopening} of two spring legs of a contact spring, at least one spring leg is provided in a contact zone with a cusp in the form of a protrusion pointing to the other spring leg in the region of at least one long edge 
to provide
In { HEAD ~ order } to provide { TAIL ~ a contact preopening } of two spring legs of a contact spring , at least one spring leg is provided in a contact zone with a cusp in the form of a protrusion pointing to the other spring leg in the region of at least one long edge
OTH HEAD HEAD HEAD HEAD HEAD REL REL TAIL 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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH