Exhaust regulator valve for push-pull diving system
US4037594A · kind A · utility
11Cited by
4References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 26, 1976 |
| Grant date | Jul 26, 1977 |
| Priority date | — |
| Expiry date | Apr 26, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7825
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A diving helmet exhaust regulator valve maintains helmet pressure substanlly constant in a push-pull system wherein breathing gas is supplied under pressure (push) at a constant rate and respired gas is exhausted to a low pressure (pull) conduit for return to a regenerator. The regulator valve is characterized by a throttling valve member operated by a piston that is acted upon by ambient sea pressure and helmet pressure independently of pressures in the upstream exhaust passages, or of exhaust flow rate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.