EP 0667171 B1 20000329 - Improved mask for breathing apparatus supplying air under pressure or not
Title (en)
Improved mask for breathing apparatus supplying air under pressure or not
Title (de)
Maske für Atmungsgerät zum Versorgung mit druck- bzw. druckloser Luft
Title (fr)
Masque pour appareil respiratoire, fournissant de l'air sous pression ou non
Publication
Application
Priority
IT MI940091 U 19940209
Abstract (en)
[origin: EP0667171A1] A mask (10) for breathing apparatus, provided with one-way air inlet (12) and one-way air outlet valves (14) of variable elasticity, in which said outlet or expiration valve (14) has an opening pressure selected between a first and a second predetermined values by means of a prearrangement control member (24). The expiration valve (14) comprises an airtight diaphragm (16) elastically pushed to close an expiration passageway (13) by means of two springs (19, 25) in series with each other, the former (19) having an elastic coefficient greater than the latter (25); the control member (24) is movable between a position of non-interference and a position of interference with the elastic movement of the second spring (25) under the action of a pressure acting on the diaphragm (16). <IMAGE>
IPC 1-7
IPC 8 full level
A62B 18/10 (2006.01)
CPC (source: EP)
A62B 18/10 (2013.01)
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 0667171 A1 19950816; EP 0667171 B1 20000329; AT E191150 T1 20000415; DE 69515920 D1 20000504; DE 69515920 T2 20001221; IT 232743 Y1 20000119; IT MI940091 U1 19950809; IT MI940091 V0 19940209
DOCDB simple family (application)
EP 95200205 A 19950127; AT 95200205 T 19950127; DE 69515920 T 19950127; IT MI940091 U 19940209