Pleated channel flow filter and/or roll form method
US11975287B2 · kind B2 · utility
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20References
31Claims
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Key dates
| Filing date | Apr 15, 2021 |
| Grant date | May 7, 2024 |
| Priority date | — |
| Expiry date | Jan 21, 2042 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M35/02408
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A roll forming method may be used to provide a pleated filter media pack and filter cartridges with channels formed. The pack includes a strip of a filter media extending opposed edges and opposed front and back sides. The strip is pleat tips with spacer structure such as integrally formed embossments maintaining a spacing between pleat panels. The inlet and outlet flow faces are created by the edges of the filter media rather than the pleat tips. Alternating pairs of pleat panels are closed such as by seal beads at the inlet and outlet flow faces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.