EP 0252052 A1 19880107 - Inner mask for protective face mask.
Title (en)
Inner mask for protective face mask.
Title (de)
Halbmaskeneinsatz für Vollgesichtsmaske.
Title (fr)
Masque intérieur pour masque facial de protection.
Publication
Application
Priority
SE 8602960 A 19860703
Abstract (en)
The present invention relates to an inner mask for protective masks with openings allowing air to flow from the space between protective mask and inner mask. Said openings (6, 8) are provided with non-return valves in the form of a compression moulded membrane (7, 7 min ) of elastomeric material designed to tightly abut the area surrounding the inner mask (1) thanks to the inherent elasticity of the material.
IPC 1-7
IPC 8 full level
A62B 18/02 (2006.01)
CPC (source: EP)
A62B 18/02 (2013.01)
Citation (search report)
- [X] GB 2042346 A 19800924 - DRAEGERWERK AG
- [Y] US 2999498 A 19610912 - MATHESON JAMES N
- [Y] US 2954048 A 19600927 - RYCHLIK FRANK J
- [A] US 2647511 A 19530804 - EDMUND BARACH
- [A] US 3042035 A 19620703 - GEORGE COANDA
Designated contracting state (EPC)
AT BE CH DE ES FR GB GR IT LI LU NL
DOCDB simple family (publication)
EP 0252052 A1 19880107; FI 872915 A0 19870701; FI 872915 A 19880104; NO 872759 D0 19870701; NO 872759 L 19880104; SE 455760 B 19880808; SE 8602960 D0 19860703; SE 8602960 L 19880216
DOCDB simple family (application)
EP 87850215 A 19870701; FI 872915 A 19870701; NO 872759 A 19870701; SE 8602960 A 19860703