Panel filter with frame
US7537632B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 22, 2006 |
| Grant date | May 26, 2009 |
| Priority date | — |
| Expiry date | Feb 27, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S55/31
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A panel filter frame and panel filter are provided. The panel filter frame is made from a one-piece die-cut blank of material. The die-cut blank includes a grill portion, four sidewall portions and four flap portions all integrally connected. Individual sidewall portions are interposed between a side of the grill portion and one of the four flap portions. The plurality of portions of the die-cut blank are interconnected at fold lines. The frame is formed when the die-cut blank is folded about the fold lines and the portions are secured in the folded position by at least a plurality of interlock receptacles formed in the terminating folded portion of the die-cut blank.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.