Breathing apparatus

Details Breathing apparatus Breathing apparatus

A - Human Necessities

62

B

A62B 7/00 (2006.01) B63C 11/18 (2006.01)

Patent

CA 2182049

A two-stage breathing apparatus comprises a compressed air supply cylinder (1) provided with a cylinder valve (2) communicating through a high- pressure duct (3) with a manifold (4). A first high- pressure branch (5) of the manifold (4) communicates with a pressure indicator warning unit (6) and a second high pressure branch (7), comprising a high pressure flexible hose, connects the manifold (4) via a non- return valve (8) with a high pressure quick release connector (10). The manifold (4) contains a pressure reducer (11) which feeds a demand valve (12) provided on a breathing mask (14) via a further flexible hose (13). The non-return valve (8) permits flow in the direction from the high-pressure quick release connector (10) to the supply cylinder (1), but prevents flow in the direction from the supply tank (1) to the high-pressure quick release connector (10). Consequently, the supply tank (1) can be replenished rapidly via the quick release connector (10), but if the connector (10) fails or the high pressure flexible hose bursts, the non-return valve prevents the loss of compressed air to the atmosphere.

Affiliated with

Also associated with

Rating

Breathing apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Breathing apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Breathing apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1995296