Patent · US Expired

Chemical cartridge for respirators

US5267558A · kind A · utility

8Cited by

4References

7Claims

0Family size

Assignee

Auergesellschaft GmbH · DE

Inventors

Klaus Haertle · Berlin, DE
Volker Hunnebeck · Berlin, DE
Karl-Heinz Kohricht · Berlin, DE
Michael Schwichtenberg · Berlin, DE
Stefan Zloczysti · Berlin, DE

Key dates

Filing date	Aug 12, 1992
Grant date	Dec 7, 1993
Priority date	—
Expiry date	Aug 12, 2012

Classification

Technology area (CPC A)Human Necessities
CPC primaryA62B7/08
WIPO fieldOther consumer goods
WIPO sectorOther fields

Abstract

A chemical cartridge for respirators for respirators, the cartridge containing a chemical, e.g., potassium hyperoxide, which when acted upon by carbon dioxide and moisture, produces oxygen from a stream of inhaled air. Two discharge nozzles are provided which project into the chemical and out of which the regenerated exhaled air flows. The incoming flow occurs over a large area and the outflow occurs over a small area with the peripheral surfaces of the discharge nozzles being spaced substantially equidistant from an inlet surface of the chemical, thereby ensuring optimum use of the chemical for oxygen production purposes because a user's exhaled air is caused to flow completely through the entire space occupied by the chemical.

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