Patent · US Expired

Gas detector with automatically operable fan switch

US3933029A · kind A · utility

20Cited by

4References

5Claims

0Family size

Assignee

DRAGERWERK AKTIEGESELLSCHAFT · DE

Inventors

Horst Rabenecker · Stockelsdorf, DE
Horst Spahrbier

Key dates

Filing date	Jan 18, 1974
Grant date	Jan 20, 1976
Priority date	—
Expiry date	Jan 18, 1994

Classification

Technology area (CPC G)Physics
CPC primaryG01N1/24
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A gas detector, comprises a housing having an interior cavity with a wall having a testing tube receiver with an opening therethrough into the cavity. Spaced above the wall and in alignment therewith, is a test tube receiving tube and, when a test tube is placed in the receiving tube, it actuates a switch to actuate a fan to draw a gas sample through the testing tube for testing purposes.

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