| 摘要 |
<p>There is provided a new and useful garage door opening/closing system comprising a garage door having top, bottom, and first and second sides and having a series of rollers associated with the first and second sides; a pair of door rails at the first and second sides of the door for receiving the rollers for movement of the door along the rails, in a door opening path; at least one hinge part mounted on the door intermediate the first and second ends; a central guide rail extending outwardly from the plane of a closed position of the door from a position above the top of the door; a trolley mounted on the central guide rail for movement along the guide rail, the trolley for operative connection to at least one hinge part; at least one cable drum having a pair of cables thereon operatively associated with the trolley for moving the trolley along the central guide rail; and operator means operatively associated with at least one drum for driving at least one drum.</p> |
