Patent · US Expired

Device for providing an early detection of aerosol products of combustion of a polyvinyl chloride substance

US3973192A · kind A · utility

6Cited by

2References

5Claims

0Family size

Assignee

Telefonaktiebolaget LM Ericsson (Publ) · SE

Inventors

Eduard W. Justi · Braunschweig, DE
Henning Ewe · Hamburg, DE
Peter W. R. Brennecke

Key dates

Filing date	Nov 5, 1974
Grant date	Aug 3, 1976
Priority date	—
Expiry date	Nov 5, 1994

Classification

Technology area (CPC G)Physics
CPC primaryG08B17/117
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A device for providing an early detection of aerosol products of combustion originating at least partly from a polyvinyl chloride substance. It comprises an electric resistance body of magnesium having a very small thickness and being arranged to be exposed to said aerosol products of combustion, an electric measuring circuit connected to the resistance body, and an indicating means arranged to generate an indicating signal in dependence on that the resistance of the resistance body exceeds a definite level.

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