Patent ID: 6263947
Filing Date: 2001-07-24
Classification: E05D,E05F,E05Y

Abstract:
A cable control device in a sectional overhead door having a motor-driven counterbalance system comprising, a spring-loaded drive shaft, cable drums carried by said drive shaft, cables attached to and interconnecting said cable drums and the door and forming and releasing cable wraps of said cable on said cable drums upon raising and lowering of the door, unitary shrouds associated with each of said cable drums having cylindrical hoods in close proximity to said cable wraps through substantially the circumference of said cable drums to maintain axial alignment of said cable wraps with said cable drums in the event of the development of slack in said cables, chutes formed in said hoods permitting ingress and egress of said cables to said cable drums and limiting rotation of said hoods relative to said cable drums, an axial discontinuity in said hoods, and an axial hinge in said hoods displaced from said axial discontinuity forming two parts of said hoods being relatively pivotal at said hinge for mounting and demounting on said cable drums.