Minimal elastance, closed-circuit underwater breathing apparatus
US5299567A · kind A · utility
6Cited by
6References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 29, 1992 |
| Grant date | Apr 5, 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 minimal elastance underwater breathing apparatus UBA) in which the elastance component of UBA impedance is substantially eliminated by forcing the breathing bag to expand and contract in a horizontal plane with small vertical displacements and hence minimal elastance. The invention further includes a servo-mechanism operating with a microprocessor, 3-axis position sensor and rotatable joints which act to keep the breathing bag oriented horizontally no matter what the diver's position. The principles of the present invention may be adapted to existing UBA with redesign and additions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.