公开(公告)号：US07343958B1

公开(公告)日：2008-03-18

申请号：US11098187

申请日：2005-04-04

Applicant: A. Anthony East ,  Darrin Brunk ,  Yannick Funk ,  Normand Savard ,  Mathieu Provencal

Inventor： A. Anthony East ,  Darrin Brunk ,  Yannick Funk ,  Normand Savard ,  Mathieu Provencal

IPC: E05F11/04

CPC classification number: E05D13/1261 ,  E05Y2201/618 ,  E05Y2201/654 ,  E05Y2201/664 ,  E05Y2900/106 ,  Y10T16/84

Abstract: A garage door cable drum is disclosed for a sectional overhead door of a type having a substantially non-linear lift-weight to lift-height characteristic. The drum includes a generally spiral cable groove having a variable minor radius. The groove minor radius at any intermediate point along the groove is sized to provide a lift-cable moment arm that yields a corresponding cable lift force that is slightly less than an instantaneous lift weight of the garage door at any intermediate door elevation.

Abstract translation: 公开了一种用于具有基本上非线性升力至升高高度特性类型的截面顶门的车库门电缆卷筒。 滚筒包括具有可变小半径的大致螺旋形的缆线槽。 在槽的任何中间点处的凹槽小半径的尺寸被设计成提供提升缆绳力矩臂，其产生相应的电缆提升力，其略小于任何中间门高度处的车库门的瞬时提升重量。