Drive

Details Drive Drive

E - Fixed Constructions

06

B

268/47, 74/53, 1

E06B 9/68 (2006.01) B66D 3/18 (2006.01) E05F 15/10 (2006.01) E06B 9/70 (2006.01) F16D 11/00 (2006.01) F16H 53/02 (2006.01)

Patent

CA 1292373

ABSTRACT A drive suitable for a door or gate operator mechanism is provided which has a motor (1) and a gear box (5). The gear box (5) has a drive disengaging means (29) therein which can be pulled by a chord (7) to effect drive engagement of the motor (1) with the fear box (5). When the chord (7) is next pulled drive disengagement of the motor (1) with the gear box (5) is provided. The arrangement permits a door or gate which is driven by the operator to be manually opened in the event of power failure. The mechanical advantage of the gear box (5) and the motor (1) on the door or gate is such that the gate cannot be manually opened without the drive being disengaged.

554949

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