A system for decoupling a barrier (24) from a barrier movement apparatus for the manual operation of the barrier (24). Advantageously, the decoupling is performed in response to a wireless signal (61) and may be done only when the barrier (24) is determined to be in a safe position.
申请公布号
WO03096536(A3)
申请公布日期
2003.12.24
申请号
WO2003US14499
申请日期
2003.05.08
申请人
THE CHAMBERLAIN GROUP, INC.
发明人
GRIFFIN, JAMES, C.;FITZGIBBON, JAMES, J.;LAIRD, EDWARD, T.;OLMSTED, ROBERT, J.
