公开(公告)号：US06470952B1

公开(公告)日：2002-10-29

申请号：US09874334

申请日：2001-06-06

Applicant: John Cline ,  Hal Gebert

Inventor： John Cline ,  Hal Gebert

IPC: E05F1500

CPC classification number: E05D15/266 ,  E05F15/603 ,  E05F15/605 ,  E05F15/627 ,  E05F15/643 ,  E05F15/646 ,  E05Y2201/626 ,  E05Y2201/638 ,  E05Y2201/652 ,  E05Y2900/00 ,  E05Y2900/132

Abstract: A laterally symmetrical bi-folding door assembly permits manual operation in the event of a power failure, without requiring readjustment or realignment of any of the door components for operation when power is restored. Each (left and right) door assembly comprises a pair of rigid panels, with the panels hingedly attached to the jamb edge of the door opening having a width substantially half that of the main panels. The two main panels are pivotally secured to upper drive mechanisms along their vertical centerlines, and abut one another along the doorway vertical centerline when the door assembly is closed. When they door assembly is opened, the inwardly disposed edges of the jamb panels and attached outward lateral edges of the main panels, move inwardly. The central edges of the two central panels thus swing outwardly relative to the building structure, due to their vertical centerline attachment to the drive mechanism.

Abstract translation: 横向对称双折门组件允许在电源故障的情况下进行手动操作，而不需要在电源恢复时操作的任何门组件进行重新调整或重新对准。 每个（左和右）门组件包括一对刚性面板，其中面板铰接地附接到门开口的侧边缘，其宽度基本上是主面板的一半。 两个主面板沿其垂直中心线枢转地固定到上驱动机构，并且当门组件关闭时沿门口垂直中心线彼此邻接。 当门组件打开时，侧板的向内设置的边缘和附接的主面板的外侧边缘向内移动。 因此，两个中央面板的中心边缘由于其垂直中心线连接到驱动机构而相对于建筑结构向外摆动。