A. Safety devices to limit the falling speed of persons or objects, including a friction brake consisting of at least one pressure plate, a floppy disk ring, a friction ring and a backup plate, and a rotary drum with a centrifugal crank; and I'm here to make safety devices.

摘要

Security Device comprising a operated centrifugal Friction Brake assembled and pretorqueado comprising at least a pressure Plate, a Ring RatchetA Friction ring and a Backing Plate and a rotating Drum; a method for Manufacturing a security device.