Patent · US Active

Filter cartridge, filtering face mask and method for manufacturing

US9089722B2 · kind B2 · utility

4Cited by

0References

15Claims

0Family size

Assignee

Moldex-Metric, Inc. · US

Inventors

Torben Skov · Neckartenzlingen, DE
Roman Skov · Stuttgart, DE
Frank Kern · Neckartenzlingen, DE

Key dates

Filing date	Feb 14, 2013
Grant date	Jul 28, 2015
Priority date	—
Expiry date	Feb 14, 2033

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/49908
WIPO fieldOther consumer goods
WIPO sectorOther fields

Abstract

The invention relates to a filter cartridge for an air filtering device, in particular for a filtering face mask and a method for manufacturing a filter cartridge, comprising a stiff cup-shaped casing having a bottom and a circumferential sidewall extending at least section-wise parallel to one axis, a stiff discoidal lid and a filter bed of loose filter material compressed between the lid and the casing, the lid and the bottom containing each at least one through-hole so that air to be filtered passes through the filter bed, and at least one of the lid and the bottom being curved to at least one direction, whereby the lid is at least essentially arranged within the casing, the outermost contour of the lid close-fitting to the inner contour of the sidewall, and fixed thereto by a direct connection, particularly by a non-detachable connection.

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