Humidifier with dual float valves
US5445143A · kind A · utility
135Cited by
8References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 23, 1993 |
| Grant date | Aug 29, 1995 |
| Priority date | — |
| Expiry date | Sep 23, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87917
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A humidification chamber for a respiratory humidifier water is maintained by the use of floats which actuate valves to control the passage of water through a water inlet. Two floats are each provided with actuating mechanisms to separately control the respective valve members. The separate valve members are covered by an elastomeric moulding which couples the valve members and provides a seal. The valves are co-axially aligned and the system provides improved safety by allowing for reliable operation in the case where one of the floats fails. An alternative embodiment of the dual valve construction is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.