Vision panel frame

Details Vision panel frame Vision panel frame

E - Fixed Constructions

06

B

108/73

E06B 3/62 (2006.01) E06B 3/58 (2006.01) E06B 5/16 (2006.01)

Patent

CA 1285823

ABSTRACT OF DISCLOSURE A vision unit which can be easily assembled into the opening in a door such as a fire door which is constructed so that it can withstand high temperatures without disintegration. The vision unit is readily assembled into an opening in the door by one person working alone. The vision unit is composed basically of a first frame assembly adapted to be mounted in said opening and to one side of said door; a second frame assembly adapted to be mounted in said opening and to the opposite side of said door; said first and second frame assemblies having flange sections for extending over peripheral edges of said opening; support arms for extending toward each other from said first and second frame assemblies into said opening and defining an open holding channel; a transparent panel member for mounting in said opening with its margin disposed in said channel; wherein said support arms maintain said transparent panel member in place including times when said transparent panel member becomes semi-molten, said support arms including sharp edge portions adapted to be biased inwardly into contact with said transparent panel member wherein said sharp edge portions will imbed in said transparent panel member when said transparent panel member becomes semi- molten; at least one support element for positioning between said first and second frame assemblies and closing the open channel to support the bottom of said transparent panel member; and securing means for clamping the first and second frame assemblies to the door and to said transparent panel member. Securing means such as threaded nuts and bolts or screws pass through the door opening and fasten the frame members to the door as well as to the panel member.

488332

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