Door closer assembly

Details Door closer assembly Door closer assembly

2011-07-05

2011-07-05

Bagnell, David J (Department: 3677)

Miscellaneous hardware (e.g., bushing, carpet fastener, caster,

Closers

Spring and gear

Reexamination Certificate

active

07971316

ABSTRACT:
A door closer assembly is provided, including a valve regulating an amount of hydraulic fluid that flows through the valve. The amount of hydraulic fluid flowing through the valve controls a force generated by the door closer assembly on a door. A first sensor measures an angular position of the door, and a second sensor measures an angular position of the valve. The angular position of the valve determines the amount of hydraulic fluid flowing through the valve. A controller controls the adjustment of the valve based on the angular position of the door and the angular position of the valve.

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