Combination economizer valve and locking means for oxygen supply system
US4664146A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 18, 1986 |
| Grant date | May 12, 1987 |
| Priority date | — |
| Expiry date | Aug 18, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87917
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A combination device for flow-regulation in an oxygen supply system, providing in a unitary device providing both an economizer valve which automatically and safely vents oxygen when the patient's demand or usage is less than the amount being constantly produced by the heat-induced evaporation (NER) of liquid oxygen in a supply reservoir, but automatically and economically stops the venting when the usage demand utilizes at least as much as the NER, in combination with a lockable flow-regulating oxygen-supply valve which can be pre-set to permit only a certain maximum flow rate of the oxygen although permitting the flow to be moderated to less than that maximum flow rate, thus giving an oxygen-therapy patient some control of oxygen flow-rate although preventing overdose.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.