Framed air filter with skip-scored sidewall junction
US11376537B2 · kind B2 · utility
1Cited by
12References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 1, 2019 |
| Grant date | Jul 5, 2022 |
| Priority date | — |
| Expiry date | Oct 13, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2279/50
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A framed air filter that includes air filter media and a frame with four frame portions. At least one frame portion includes an inner sidewall and an outer sidewall that meet at a sidewall junction. The sidewall junction extends along a score line that includes at least one cut-scored segment and one crush-scored segment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.