Patent · US Expired

Breathing apparatus

US4805608A · kind A · utility

11Cited by

8References

5Claims

0Family size

Assignee

DRAGERWERK AKTIEGESELLSCHAFT · DE

Inventors

Wolfgang Eckstein · Sereetz, DE
Gunther Kolbe · Mölln, DE

Key dates

Filing date	Mar 27, 1987
Grant date	Feb 21, 1989
Priority date	—
Expiry date	Mar 27, 2007

Classification

Technology area (CPC A)Human Necessities
CPC primaryA62B25/00
WIPO fieldOther consumer goods
WIPO sectorOther fields

Abstract

A breathing apparatus removably mounted in a housing has a device for processing the breathing gas. This device includes a container and a charge for processing the breathing air which is disposed in the container. The container has air pass-through openings at least one of which is closable with a stopper. The breathing apparatus provides an indication of possible entry of water vapor and this indication is limited to only the water-vapor sensitive parts of the breathing apparatus. For this purpose, a charge is provided in the stopper having a moisture-sensitive indicator which is visible through a viewing window from outside the housing and this charge is in gas contact with the charge of the device for processing the breathing gas.

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