美國
US 12,697,515 B2
Multi layer fire curtain
US 12,697,515 B2 是美國專利商標局（USPTO）的核准專利，日期 2026-08-04。申請人：McKeon Rolling Steel Door Co., Inc.。PDF 可在本頁下載，未登入每天最多 5 篇。
- 申請人
- McKeon Rolling Steel Door Co., Inc.
- 發明人
- Andrew C. LAMBRIDIS; Ashraf GOMAA
- 公開日
- 2026-08-04
- 申請日
- 2024-07-26
- 文件種類
- B2 核准公告
- 也寫作
- US 12,697,515 B2 · US12697515 · 12697515
摘要
A multi-layer rolling fire curtain assembly includes: a multi-layer fire curtain wrappable about a roller and to be deployable between an extended position and an open position, such that a free end of the curtain is movable between a retracted position and an extended position. The fire curtain has a fire resistant inner curtain layer having a first width between first and second lateral edges, and a fire resistant outer curtain layer arranged opposite the inner layer and having first and second scalloped lateral edges varying between the first width and a second width less than the first wid…
這裡只列摘要開頭，完整內容在 PDF 裡。
不用登入，每天可下載 5 篇（今天還剩 5 篇）。批次下載與 OA 引證整理需免費註冊。
專利局網站： 美國專利商標局（USPTO）