| 摘要 |
A device for the passage of cables and pipes, for electrical applications and the like, comprising a plurality of disk-like members having a progressively smaller diameter with respect to each other and provided monolithically together with a shank. The disk-like members comprise at least one first base member, having a larger diameter, and an end member, having a smaller diameter. The end member has a pre-fracture means constituted by at least one recess, having a substantially triangular cross-section, which is formed on the inner side of the end member. The device allows the quick entry of rigid pipes and cables and is furthermore capable of passing the test finger test according to the IEC 60670-1 and IEC 60670-22 standards. |
