Title (en)

BREATHING PROTECTION MASK

Publication

EP 0294707 A3 19900509 (DE)

Application

EP 88108840 A 19880602

Priority

DE 3719420 A 19870611

Abstract (en)

[origin: US4883052A] A multi-layer protective breathing mask adapted to cover the mouth and the nose of a wearer thereof comprises an outer layer, an inner layer and, between the outer and inner layers, a filter element comprising a particle filter and an adsorber filter. The adsorber filter may comprise one or more layers of foam material and the layers of foam material may be of different porosities. The at least one layer of foam material adsorber particles which may preferably be of a plurality of particle sizes.

IPC 1-7

A62B 18/02; A62B 23/02; A41D 13/00

IPC 8 full level

A41D 13/11 (2006.01); A62B 23/02 (2006.01)

CPC (source: EP US)

A41D 13/11 (2013.01 - EP US); A62B 23/025 (2013.01 - EP US)

Citation (search report)

• [X] GB 2028664 A 19800312 - SEPLAST SA
• [X] US 4643182 A 19870217 - KLEIN MAX [US]
• [X] EP 0183059 A1 19860604 - AMERICAN OPTICAL CORP [US]
• [X] GB 1588442 A 19810423 - SECR DEFENCE
• [Y] EP 0038743 A1 19811028 - SEPLAST SA [FR]
• [Y] EP 0024289 A1 19810304 - SANDLER HELMUT HELSA WERKE [DE]
• DE 2804154 B1 19790125 - BLUECHER HUBERT, et al
• DE 280414 C
• DE 891795 C 19531001 - AUERGESELLSCHAFT AG
• EP 0137094 A2 19850417 - FREUDENBERG CARL FA [DE]
• FR 825960 A 19380318 - PROCEDES ECLA SOC D
• DE 2400827 A1 19750710 - BLUECHER

Designated contracting state (EPC)

CH DE FR GB IT LI NL SE

DOCDB simple family (publication)

EP 0294707 A2 19881214; EP 0294707 A3 19900509; DE 3719420 A1 19881229; DE 3719420 C2 19910606; IL 83881 A0 19880229; IL 83881 A 19921115; NO 882497 D0 19880607; NO 882497 L 19881212; US 4883052 A 19891128

DOCDB simple family (application)

EP 88108840 A 19880602; DE 3719420 A 19870611; IL 8388187 A 19870913; NO 882497 A 19880607; US 9581687 A 19870911