Air recirculation system with filter flaps
US8147577B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 6, 2010 |
| Grant date | Apr 3, 2012 |
| Priority date | — |
| Expiry date | Dec 6, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S604/902
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A filter body having a housing, a cavity for holding a filter media, intake ports each configured to receive an intake tube, and a plurality of intake port flaps configured for movement between a first position which restricts passage of a gas or liquid and a second position which allows passage of a gas of liquid. In one aspect, a filter body has flaps that have a magnet and the housing has an attracting material configured to attract the magnet in at least one of the flaps and configured to hold a flap in the first position. In another aspect, a filter in which a portion of the housing comprises an attracting means is configured to hold a flap in the first position. In another aspect, a filter having a housing configured to hold a filter media has a plurality of fluid passage holes and hole covers, in which the hole covers and an area adjacent to the holes on the filter housing each have an attracting material for holding the hole covers in a position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.