| 摘要 |
<p>The invention relates to a friction cup (11-14) for a security rotor, having a smooth spherical head (22) provided on its free end with a spherical idling cap (21). The friction cup (11-14) comprises a cylindrical body (11) with eccentric inner walls (111) on which a pair of cylindrical rollers (12) move, guided by a basket or cage (13), and axially retained (12, 13) in the body (11) by a ring (14). The cup-rotor system can be used for protecting inspection cameras in underground communication networks, electrical networks, drainage systems, aqueducts, offices etc., by means of the installation thereof in various mechanisms, such as security doors, covers or security gates.</p> |
