A second member 13 is provided with {TAIL ~ a recess} 14 defined thereon, preformed friction spring elements 17 are positioned on the second member 13 by sliding the elements 17 on member 13 at the recessed end as explained in {HEAD ~ conjunction} with the description of FIGS 4 and 5 
A second member 13 is provided with { TAIL ~ a recess } 14 defined thereon , preformed friction spring elements 17 are positioned on the second member 13 by sliding the elements 17 on member 13 at the recessed end as explained in { HEAD ~ conjunction } with the description of FIGS 4 and 5
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