Patent · US Expired

Masonry lead-in fixture

US6161873A · kind A · utility

13Cited by

5References

9Claims

0Family size

Assignee

Hilti Aktiengesellschaft · LI

Inventors

Herbert Munzenberger · Wiesbaden, DE
Arndt Andresen · Irving, US
Jean-Louis Milhes · Feldkirch, AT

Key dates

Filing date	Feb 16, 1999
Grant date	Dec 19, 2000
Priority date	—
Expiry date	Feb 16, 2019

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16L5/04
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A masonry lead-in fixture having a housing (2; 102) including an axially extending through bore (10; 110), a radially protruding attachment flange (4; 104) provided at least at one end of the housing (2; 102), and a mass (11; 111) intumescible in case of a fire, with the mass (11, 111) limiting the bore (10; 110) at least regionwise and closing the bore (10; 110) upon being intumesced, and a substantially disc-shaped partition (12; 112) located in the housing (2; 102) and which elastically and springy extends over an entire inner diameter of the bore (10, 110) and has a predetermined breaking area which is broken through upon pipe cable or the like being pushed therethrough.

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