Patent classifications
E
FIXED CONSTRUCTIONS
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E06
DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
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E06B
FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
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3/00
Window sashes, door leaves, or like elements for closing; wall or like; openings; Layout of fixed or moving closures, e.g. windows; in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
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E06B2003/7059
Specific frame characteristics
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E06B2003/7092
with frame members not directly or resiliently connected to each other
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E06B2003/7092

Fire rated door
10273746 · 2019-04-30 ·

A fire rated 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. The fire rated door may be clad around the pair of frame members.