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US 9,909,356 B1Granted
Fire door
OwnerWilliam O'Keeffeinventor
Life of this patent
Estimating the term…
Abstract
A fire door utilizing a pair of frame members each having cases forming opposing open chambers. The open chambers are filled with fire resistant material and include structural plates that do not contact the cases. Holders attach to the cases support a fire resistant glazing unit.
Claims12
A fire door device having a vision panel, comprising:
- one frame member, said one frame member comprising a first case, said first case having a sheet portion and first and second legs connected to said sheet portion, said sheet portion and said first and second legs of said first case forming a first open chamber, and a second case, said second case having a sheet portion and first and second legs connected to said sheet portion, said sheet portion and said first and second legs of said second case forming a second open chamber;
- one plate lying across said first and second open chambers without contacting said first and second cases;
- a first fastener for fixing said first case to said one plate;
- a second fastener for fixing said second case to said one plate;
- a fire resistant filler positioned in said first and second open chambers;
- one holder, said one holder providing a recess, the vision panel at least partially occupying said recess of said one holder;
- and
- said first and second fasteners connecting said one holder to said first and second cases, respectively.
5 more elements
Dependencies are inferred from the claim text.