B - Operations – Transporting – 63 – C
Patent
B - Operations, Transporting
63
C
137/1.5
B63C 11/18 (2006.01) A62B 7/04 (2006.01) A62B 9/04 (2006.01) B63C 11/22 (2006.01)
Patent
CA 1036892
Abstract of the Disclosure The disclosure of this specification illustrates and teaches the use of a self contained breathing apparatus for attachment to a user's back and incorporates a plurality of tanks having a manifold between them that is common to all with a single filling block leading thereto, and a reserve sys- tem mounted at one end thereof. The reserve system comprises a poppet valve which signals a loss in pressure by closing, after which it can then be actu- ated to open it for supplying the remaining portion of the reserve breathing gas through the manifold. The system also has a first and second stage regu- lator to provide regulated breathing gas to a user. The first stage regulator incorporates a dynamically balanced piston which is supported by an O Ring that is deformed through its cross section to provide movement to the valving piston. The entire system is encapsulated within a package or casing which can be opened along a parting line thereof and which is secured by over-center latches. The casing has a number of straps- and support members attached there- to forming a harness that a user places around his torso.
241000
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