| 摘要 |
1. Resilient element comprising a helical spring (1) consisting of a wire having a constant pitch and a constant cross-section from end to end, each end turn being engaged on a helicoidal support surface (31, 41) of a support end plate (3, 4) having a vertical stop against which the end of the wire bears, characterised by the fact that the end turns are freely supported on the said helicidal support surfaces (31, 41) of the said end plates (3, 4).
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