EP 0258508 A1 19880309 - Replaceable filter respirator.
Title (en)
Replaceable filter respirator.
Title (de)
Atemschutzmaske mit auswechselbarem Filterelement.
Title (fr)
Masque respiratoire à élément de filtrage interchangeable.
Publication
Application
Priority
EP 86306861 A 19860905
Abstract (en)
A respirator (10) providing a dust mask includes a central exhalation valve (26) and a concentric inhalation valve (34) the inhalation valve (34) leading to a filter assembly comprising a perforate retaining member (42), a filter (44), a frame (14) and an imperforate back wall (30), the filter (44) and back wall (30) being separated by buttresses (24) of the frame (14) which afford a passage for air to the inside of a face piece (12).
IPC 1-7
IPC 8 full level
A41D 13/11 (2006.01); A62B 18/02 (2006.01)
CPC (source: EP)
A41D 13/1146 (2013.01); A62B 18/025 (2013.01)
Citation (search report)
- [Y] US 3467093 A 19690916 - HOTZ LEO F, et al
- [Y] US 3029812 A 19620417 - NORMAN MATHESON JAMES
- [A] US 4501272 A 19850226 - SHIGEMATSU KAISABURO [JP], et al
- [A] GB 2105177 A 19830323 - NAKAGAWA YOSHIMASA
Designated contracting state (EPC)
BE CH DE FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0258508 A1 19880309; EP 0258508 B1 19910327; DE 3678442 D1 19910502
DOCDB simple family (application)
EP 86306861 A 19860905; DE 3678442 T 19860905