| 摘要 |
An automatic door opener adaptable to manual doors which includes a door hinged along at least one edge to a door frame, and manually movable between open and closed positions; an automatic door opener mechanism secured to the door, which further includes a motor; a first gear driven by the motor; at least an output gear for driving an output shaft secured to the door; a pair of gear dog portions on a face of the output gear defining free travel spaces therebetween; a pair of pins extending from the output shaft within the travel spaces, so that when the output gear is rotated by the motor, the gear dog portions engage the pins on the output shaft and rotate the door from a first closed position to a second opened position; a timer for allowing the door to remain in the opened position a pre-determined amount of time before returning to the closed position; and when the door is moved manually to the opened position and allowed to close, the pin members are not engaged by the gear dogs, and travel within the free travel spaces without imparting movement to any components of the automatic door mechanism.
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