| 摘要 |
A device with multiple elements for obtaining waves in succession on locks, comprising a plurality of flat elements (1) or half-cylindrical elements (5), with opposed concavities and convexities, linked like a hinge (4) and that may be place one upon the other in succession with an end block closing (6-7), determining the squeezing of the locks (C), housed therein, between one another, whereby said locks acquire waves with opposed curving direction.
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