Integral filter and grill assembly for a cold air return
US7575617B2 · kind B2 · utility
Inventor
Key dates
| Filing date | May 16, 2006 |
| Grant date | Aug 18, 2009 |
| Priority date | — |
| Expiry date | Mar 27, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S55/37
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A grill and filter assembly having a replaceable filter element includes a rectangular frame assembly, grill insert and a filter. The rectangular frame assembly has an outer frame forming a face and an outwardly extending wall extension. The grill insert has a plurality of louvers and an outwardly extending filter housing. It also includes a plurality of flanges extending inwardly from the filter housing to a depth of no greater than the thickness of standard drywall. The filter assembly includes a loop covered with a fabric filter material. The loop is capable of flexure and the filter is inserted within the filter housing and under the flanges. A plurality of magnets are attached to the wall extension and located to magnetically hold the grill insert within the frame assembly. The flanges and filter housing are structurally adapted to allow the filter to be flexed and slid from under the flanges to remove it from the grill insert.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.