Patent · US Active

Firestop collar

US11628321B2 · kind B2 · utility

0Cited by

80References

7Claims

0Family size

Assignee

Hilti Aktiengesellschaft · LI

Inventors

Herbert Muenzenberger · Wiesbaden, DE
Hans Henning Artmann · Munich, DE
Markus Koegler · Kaufering, DE
Egon Berghofer · Scheuring, DE

Key dates

Filing date	Sep 22, 2022
Grant date	Apr 18, 2023
Priority date	—
Expiry date	Sep 22, 2042

Classification

Technology area (CPC H)Electricity
CPC primaryH02G3/22
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A firestop collar for sealing of openings, especially of line penetrations, that pass through walls or ceilings, has a frame and a block of optionally intumescent material disposed therein.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.