EP 0236208 B1 19900502 - BREATHING APPARATUS FOR COMPRESSED AIR FOR DIVING
Title (en)
BREATHING APPARATUS FOR COMPRESSED AIR FOR DIVING
Publication
Application
Priority
FR 8602367 A 19860221
Abstract (en)
[origin: US4798202A] A compressed air breathing apparatus, in particular for underwater diving, comprising a compressed air supply (1) communicating with a chamber (15) for expanding the compressed air, through a valve (6,7,2,10,13,3,14) whose opening and closing are controlled by a diaphragm (4) responsive to the inhaling effort on the part of the user, and a mouthpiece (22) comprising a conduit (21) which puts the expansion chamber (15) in communication with the mouth of the user. According to the invention, the conduit (21) of the mouthpiece (22) includes a tongue (5) for forming an obstacle to the free flow of the air from the expansion chamber (15) to the mouth of the user, the tongue (5) being so arranged that the depression required for opening the valve is between -6 millibars and +6 millibars for a rate of flow of 400 liters/min. The tongue (5) is adjustable as to position to vary the extent to which it impedes free flow of the air.
IPC 1-7
IPC 8 full level
A62B 9/02 (2006.01); B63C 11/22 (2006.01)
CPC (source: EP US)
A62B 9/022 (2013.01 - EP US); B63C 11/2227 (2013.01 - EP US); Y10T 137/7781 (2015.04 - EP US)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0236208 A1 19870909; EP 0236208 B1 19900502; DE 3762499 D1 19900607; FR 2594786 A1 19870828; FR 2594786 B1 19880513; US 4798202 A 19890117
DOCDB simple family (application)
EP 87400348 A 19870218; DE 3762499 T 19870218; FR 8602367 A 19860221; US 1387687 A 19870212