Patent ID: 6526694
Filing Date: 2003-03-04
Classification: E05B,E05D,E05Y,E06B

Abstract:
A two portion frame for an opening, comprising:(a) a fixed frame portion which is adapted to be fixedly secured about the opening; (b) a removable frame portion which is attached to the fixed frame portion by a first set of hinges; (c) a door which is attached to the removable frame portion by a second set of hinges, wherein the removable frame portion has a stepped profile cross section which engages the fixed frame portion when in a closed position, the first set of hinges being at an outer edge of the stepped profile cross section at a side of the fixed frame portion to which the removable frame portion opens so that the removable frame portion is moveable only outwardly from the opening, and the second set of hinges between the door and the removable frame portion being at an inner edge of the stepped profile cross section at a side of the fixed frame portion to which the door opens; and at least one spring-loaded quick release screw-threaded bolt for securing the removable frame portion to the fixed frame portion, the spring being co-axial with the screw-threaded bolt.