Door closer assembly

A door closer comprises a piston cooperating with a rotating pinion. Upon rotation of the pinion in the door opening direction, the piston moves toward the second end of the housing forcing fluid from a second variable volume chamber through a passage to a first variable volume chamber and compressi...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	McGinty Joseph, Faes Steven Michael, Burris Charles E, Tadlock, Jr. Robert L, White John, Gurley Jason Scott, Patterson Wade
Format:	Patent
Sprache:	eng
Schlagworte:	CHECKS FOR WINGS CONTROLLING DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION FIXED CONSTRUCTIONS KEYS LOCKS PHYSICS REGULATING SAFES SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES WINDOW OR DOOR FITTINGS WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THEFUNCTIONING OF THE WING
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Beschreibung
Zusammenfassung:	A door closer comprises a piston cooperating with a rotating pinion. Upon rotation of the pinion in the door opening direction, the piston moves toward the second end of the housing forcing fluid from a second variable volume chamber through a passage to a first variable volume chamber and compressing a spring assembly for storing energy. The spring assembly urges the piston toward the first end of the housing for forcing fluid from the first variable volume chamber to the second variable volume chamber and rotating the pinion in the door closing direction. A controller controls the position of a valve in the passage based on the sensed angular position of a door and the position of the valve for determining the amount of hydraulic fluid flowing through the valve.