Fig. 3
From: Fall inducing movable platform (FIMP) for overground trips and slips
The slip motor (red box) is mounted horizontally, with its output shaft connected to a bi-directional clutch (green box) and finally to a reel of ankle cable. The ankle cable is passed through a thick acrylic sheet to prevent over-reeling. The hole through the acrylic sheet also serves to guide the ankle cable onto the reel and prevents tangling. A resettable fuse in series with the motor acts as a safety measure to prevent the generation of excessive torque/ force. Similar to the trip brake, a power spring is also located within the reel to always keep the ankle cable taut