Patent · US Expired

Test tube with flame arrester for combustible gases

US4769218A · kind A · utility

5Cited by

4References

6Claims

0Family size

Assignee

DRAGERWERK AKTIEGESELLSCHAFT · DE

Inventors

Kurt Leichnitz · Erkrath, DE
Hans Matthiessen · Bad Schwartau, DE

Key dates

Filing date	Jun 15, 1987
Grant date	Sep 6, 1988
Priority date	—
Expiry date	Jun 15, 2007

Classification

Technology area (CPC G)Physics
CPC primaryG01N31/22
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A test tube for combustible gases is intended to be provided with protective devices, so that, in proving the presence of combustible gases, it cannot become an ignition source. To that end, a flame arrester is arranged in front of and/or behind the test material.

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