Power-assist door closer

Details Power-assist door closer Power-assist door closer

E - Fixed Constructions

05

F

268/18

E05F 15/02 (2006.01) E05F 3/04 (2006.01) E05F 3/22 (2006.01) E05F 15/04 (2006.01)

Patent

CA 2029442

An hydraulic door closer has a motor/pump component to assist opening the door by supplying oil under pressure to the closer cylinder. The component is activated by a switch sensitive to the turning of the closer pinion shaft as the door is moved out of its frame. Further, the distance which the door must move until the switch activates the motor/pump component is adjustable. The hydraulic circuitry is conveniently embodied in a single manifold block.

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