Retractable In-Wall Cable System

摘要

A retractable cable system for coiling and uncoiling a cable. The system preferably includes an axle, a first drum having a spring nested inside the drum, a second drum, and a pulley assembly. The first drum is configured to be non-rotatably coupled to the axle while the second drum is configured to rotate around the axle. A cable is configured to wrap around the first and second drums and the pulley assembly, in which one of the ends of the cable is fixed to the system. The system prevents the cable from being twisted and allows the cable to maintain its geometry as the cable is being coiled and uncoiled.

主权项

1. A retractable cable system for coiling and uncoiling a cable, the system comprising:
a) an axle; b) a first drum adapted and configured to be non-rotatably coupled to the axle, and a second drum adapted and configured to be rotatably coupled to the axle; c) a shaft-pulley assembly including a shaft having a first end and a second end, and a pulley having an outer circumference, wherein the first end of the shaft is adapted and configured to be rotatably coupled to the axle, and the second end of the shaft is adapted and configured to be coupled to the pulley; and d) a spring adapted and configured to couple to the shaft and the first drum to provide torque to the shaft as the shaft rotates with respect to the axle, wherein a cable is configured to wrap around the first and second drums and the outer circumference of the pulley, and wherein the second drum rotates around the axle and the shaft-pulley assembly rotates around the axle as the cable is being coiled and uncoiled.