Vision panel assembly for fire door panels
OwnerJack C. LaSeeinventor
Life of this patent
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Abstract
A vision panel assembly for a fire door includes a frame structure and a glass vision panel which are mounted in a rectangular opening in the fire door. The frame structure includes a pair of frames which are anchored in grooves in the fire door and which are clamped against the glass vision panel. One frame is provided with fastener bars which are threadedly engaged by fastening screws for securing the frames together. Panel support elements extend through openings in the fastener bars for engaging edges of the glass vision panel to provide support therefor.
Claims8
In combination with a fire resistant door having rectangular shaped opening therein, the opening in the door presenting flat surfaces, each surface having an elongate groove therein,
- a fire resistant vision panel assembly mounted in said opening and including a pair of similar rectangular frames formed of a metallic material, and a glass vision panel, each frame being comprised of a plurality of frame members rigidly secured together in right angular relation, each frame member being of C-shaped cross sectional configuration and having a panel engaging lip and a groove engaging lip, said groove engaging lip for each frame member being disposed in one of said grooves in one of said surfaces, said panel engaging lip for each frame member engaging said glass vision panel,
- a plurality of elongate fastener bars each being positioned within one of said frame members of one frame, a plurality of threaded elements engaging the other frame and said fastener bars for clamping the frames together and against said glass vision panel,
- and a plurality of panel support elements engaging said fastener bars and the frame members of said one frame and supporting said glass vision panel when the frames are clamped together.
Dependencies are inferred from the claim text.