Patent · US Expired

Air cleaning cartridge for a gas mask and breathing equipment with an insert

US5291881A · kind A · utility

6Cited by

11References

14Claims

0Family size

Assignee

DRAGERWERK AKTIEGESELLSCHAFT · DE

Inventors

Wolfgang Drews · Bahrenhof, DE
Gunther Kolbe · Mölln, DE
Stephan Melzer · Lübeck, DE
Hasso Weinmann · Lübeck, DE

Key dates

Filing date	Jun 3, 1992
Grant date	Mar 8, 1994
Priority date	—
Expiry date	Jun 3, 2012

Classification

Technology area (CPC A)Human Necessities
CPC primaryA62B19/00
WIPO fieldOther consumer goods
WIPO sectorOther fields

Abstract

A gas mask and breathing equipment air cleaning cartridge (1) with a carbon dioxide-binding chemical packing (4) and an insert (3). The insert has legs (6) arranged in a radiate pattern perpendicularly to the direction of flow. The legs (6) have a flexibility that compensates for differences in the filling ratios of the strands (5) of chemical and have an identical bent zigzag-shaped designs to provide good heat distribution in the circumferential direction and good resistance to vibrations and shocks.

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