Gas filtering device
US7998258B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jul 31, 2007 |
| Grant date | Aug 16, 2011 |
| Priority date | — |
| Expiry date | May 25, 2028 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2267/40
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A gas filtering device includes a housing (20,30), a flexible filter sheet (41), an inlet port (21), an outlet port (31), and a displacement restriction portion (41a) is provided. The flexible filter sheet (41) divides the interior of the housing into an inlet chamber and an outlet chamber. The filter sheet (41) has a portion that allows passage of gas. The inlet port is connected to the inlet chamber, and conducts gas into the inlet chamber. The outlet port is connected to the outlet chamber, and conducts gas from the inlet chamber to the/outlet chamber through the filter sheet. The outlet port has an opening close to the gas passing portion of the filter sheet. The displacement restricting portion (41a) restricts displacement of the gas passing portion toward the opening.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.