Oxygen enriched reciprocating piston respirator
US4587967A · kind A · utility
240Cited by
23References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 9, 1985 |
| Grant date | May 13, 1986 |
| Priority date | — |
| Expiry date | Jul 9, 2005 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M16/0072
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A variable flow reciprocating piston respirator system which is capable of providing a substantially constant oxygen enrichment over an entire inspiration stroke of a variable flow respirator output. A proportional control valve is used to deliver oxygen from an oxygen supply tank to the output of a reciprocation piston pump. A microprocessor controls the magnitude of opening of the proportional valve to insure that a proper overall volume of the output is produced with the proper percentage of enrichment of oxygen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.