Underwater diving system
US4062356A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 4, 1974 |
| Grant date | Dec 13, 1977 |
| Priority date | — |
| Expiry date | Dec 4, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7826
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
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 system 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 actuated 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 regulator 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 thereto forming a harness that a user places around his torso.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.