Humidification chambers
US8210177B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 10, 2007 |
| Grant date | Jul 3, 2012 |
| Priority date | — |
| Expiry date | Jun 20, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7404
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A valve for controlling the level of liquid within a chamber (10) is disclosed. The valve comprises a liquid inlet (30) and a primary float (40) that is movable in response to a change in the level of liquid (20) within the chamber (10) between an open configuration in which liquid (20) is able to flow through the liquid inlet (30) into the chamber (10) when the liquid (20) within the chamber (10) is below a predetermined acceptable level, and a closed configuration in which liquid (20) is prevented from flowing through the liquid inlet (30) into the chamber (10) when the liquid within the chamber (10) is at or above the predetermined acceptable level. The valve also includes a secondary float (50) that is movable in response to an increase in the level of liquid within the chamber (10) above the predetermined acceptable level from an inoperative configuration to an operative configuration in which the secondary float (50) imparts a force upon the primary float (40) that urges the primary float (40) towards its closed configuration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.