Portable oxygen delivery device
US9974920B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 7, 2011 |
| Grant date | May 22, 2018 |
| Priority date | — |
| Expiry date | Jun 2, 2032 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04C2210/1072
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Disclosed are devices, systems, and methods, including an oxygen delivery device that includes an oxygen delivery module to produce at least concentrated oxygen, and a gas moving device to deliver air to the oxygen delivery module. The gas moving device includes at least one piston rotatable inside a first chamber defined in a housing, the rotational movement of the at least one piston inside the first chamber resulting in varying pressure generated in a first portion of the first chamber, and a vane member rigidly coupled to the at least one piston, the vane member being configured to move inside a vane chamber defined in the housing, the piston and the vane rigidly coupled to the piston define the first portion of the first chamber and a second portion of the first chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.