| 摘要 |
An automatic door opening apparatus for a canopy door (10) comprises a drive mechanism (18, 20) to be fitted to the canopy door and a pivoting lever arm mechanism (62) to be fitted to a structure (14), typically the walls of a garage, that defines an opening (12) in which the canopy door is housed. The pivoting lever arm mechanism (62) is driven by the drive mechanism (18, 20) to open and close the canopy door. The control circuitry for the drive device may be user actuated by a key fob containing an infra-red transmitter. The lever arm may take the form of a pivoting track mechanism. |
