| 摘要 |
<p>A device (6) for a lifeline (1), the device comprising a main body (7) having a first portion (8) and a second portion (9), opposed to the first one; a first secondary body (10) coupled to said main body (7) by placing therebetween a spring system (12) and intended to be hooked to an element (5) of the lifeline on the side of the first portion (8); a second secondary body (11) bound to the main body and intended to be hooked to an additional element (2) of the lifeline on the side of the second portion (9); wherein the spring system, when subjected to a force of 2 kN, has a total length differing from the total length thereof without applied forces of at least 3 mm.</p> |
