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1. (WO2018183339) FIRE RATED DOOR

Pub. No.:    WO/2018/183339    International Application No.:    PCT/US2018/024584
Publication Date: Fri Oct 05 01:59:59 CEST 2018 International Filing Date: Wed Mar 28 01:59:59 CEST 2018
IPC: E06B 5/16
E06B 9/15
Applicants: CIW ENTERPRISES, INC.
Inventors: DAWDY, David
Title: FIRE RATED DOOR
Abstract:
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.