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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9/00
Screening or protective devices for; wall or similar; openings, with or without operating or securing mechanisms; Closures of similar construction
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E06B9/02
Shutters, movable grilles, or other safety closing devices, e.g. against burglary
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E06B9/15
with closing members formed of slats or the like
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E06B2009/1577
Slat end pieces used for guiding shutter
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E06B2009/1588
inserted in engaging section of adjacent slats
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E06B2009/1588

Fire rated door
11512523 · 2022-11-29 · ·

A closure may include a door configured to seal an opening. The door may include a section with an internal cavity. The closure may also include a core within a first portion of the internal cavity of the section. The core may be configured to expand from a relaxed state to an expanded state and provide a seal between the door and an edge of the opening when the core is in the expanded state.

FIRE RATED DOOR
20210087874 · 2021-03-25 · ·

A closure may include a door configured to seal an opening. The door may include a section with an internal cavity. The closure may also include a core within a first portion of the internal cavity of the section. The core may be configured to expand from a relaxed state to an expanded state and provide a seal between the door and an edge of the opening when the core is in the expanded state.