Control for a door closer having a power-assist opening feature

Details Control for a door closer having a power-assist opening feature Control for a door closer having a power-assist opening feature

E - Fixed Constructions

05

F

E05F 15/04 (2006.01) E05F 3/22 (2006.01)

Patent

CA 2097763

A control for a power-assist feature for an hydraulic closer is driven by structure mounted on the pinion shaft of the closer. It includes a pump-activating arm slidably mounted on the shaft, the end of the arm adapted to cover a pump-on sensor when the door is 'bumped'. It also includes a follower rotatably mounted near the pinion and engageable escapement-fashion by a wheel in friction fit on the pinion shaft, the follower carrying a pump- deactivating arm, the end of the latter arm adapted to move away from a pump-off sensor when the door opens to its pre-set limit.

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