Humidification chamber with float-valve having improved float
US7047999B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 28, 2003 |
| Grant date | May 23, 2006 |
| Priority date | — |
| Expiry date | Oct 25, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7426
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method is disclosed for the manufacture of a float (30) comprising the following steps: providing a mould (10) having a first enclosure (12) opening into a second enclosure (14) of greater dimensions than the first enclosure (12), and an inlet (16) into the first enclosure (12), the first and second enclosures (12, 14) together defining the shape of the float (30); injecting a mixture comprising plastics material and blowing agent into the inlet (16), such that the mixture passes through the first enclosure (12) and then into the second enclosure (14); and causing or allowing the mixture to set, thereby forming the float (30). The float (30), the mould (10) and a fluid storage chamber (60) including the float (30) are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.