Reactive, closed-circuit underwater breathing apparatus
US5315988A · kind A · utility
13Cited by
6References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 29, 1992 |
| Grant date | May 31, 1994 |
| Priority date | — |
| Expiry date | Sep 29, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB63C11/24
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
This invention comprises a tunable underwater breathing apparatus (UBA) in hich the resonant frequency of the UBA may be adjusted to meet the diver's breathing frequency by controlling the inertance component of the UBA impedance. The principles of the present invention may be adapted to existing UBA with minor redesign and some additions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.