Patent ID: 6317922
Filing Date: 2001-11-20
Classification: E05F,E05Y,Y10T

Abstract:
A door closer for a door pivotally mounted to a door frame, the door closer comprising:a cylinder having a free end and comprising a cylinder housing and an inner end cap, an attachable end adapted for attaching to one of the door or door frame, and a rotatable end cap coupled to the free end of the cylinder and having a passage extending through the rotatable end cap, the rotatable end cap rotating about the axis of the cylinder from a first position to a second position;a piston slidably mounted within the cylinder and having a piston rod mounted on the piston and extending through the passage in the rotatable end cap, wherein the piston rod is adapted for mounting to the other of the door or door frame;a biasing element within the cylinder urging the piston toward a retracted position; anda lock mechanism enclosed within the rotatable end cap exterior of the cylinder housing and inner end cap for arresting the piston relative to the cylinder.