Foldable filter for an air filtration unit and method
US7410520B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 2006 |
| Grant date | Aug 12, 2008 |
| Priority date | — |
| Expiry date | Dec 22, 2026 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2273/14
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for packaging, shipping, displaying and positioning a foldable filter having a hinge into an air filtration unit wherein the foldable filter is pivotable about the hinge between a collapsed position and an expanded position. The method includes the steps of positioning the foldable filter in the collapsed position, inserting the collapsed foldable filter into a package, shipping the collapsed foldable filter within the package to a store, positioning the packaged foldable filter for display at the store, removing the foldable filter from the package, moving the foldable filter to the expanded position and positioning the foldable filter into the air filtration unit. The foldable filter includes first and second frame sections connected by the hinge and pleated filter material that includes at least one pleat edge extending generally parallel to a hinge axis. The hinge is formed at least partially by a portion of the at least one pleat edge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.