A - Human Necessities – 62 – B
Patent
A - Human Necessities
62
B
137/1.5
A62B 9/04 (2006.01) A62B 7/00 (2006.01) A62B 9/00 (2006.01)
Patent
CA 1284604
ABSTRACT A high pressure breathing gas transfer system is provided where high pressure air from a tank of one SCBA, or a central storage supply, can be quickly transferred directly into the high pressure air tank of a second SCBA. The transfer process, between two SCBA's, is accomplished by attaching a high pressure conduit line between two quick connect check valves situated on the high pressure sides of the SCBA's. The high pressure transfer line has a quick connect coupling attached to each end to enable connection to the check valves. After the line is attached, a lever is depressed on one of the couplings to open the donor check valve. High pressure air then flows out of the donor tank and forces the check valve open on the donee tank. The air transfer continues until the internal pressure of the two tanks is equalized and the donee tank has received half of the air that was initially inside the donor tank. Because the air is transferred on the high pressure side of the regulator, the system may be used to accomplish buddy-breathing between two SCBA users in emergency situations, without interfering with the normal breathing operation of the SCBA's.
530271
Mine Safety Appliances Company
Sim & Mcburney
LandOfFree
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