Vacuum filter having annular catch
US11304579B2 · kind B2 · utility
0Cited by
44References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 7, 2019 |
| Grant date | Apr 19, 2022 |
| Priority date | — |
| Expiry date | Jun 29, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2279/55
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A filter for a vacuum cleaner includes a top having an open center, a bottom plate having an outermost edge, a center, an inside surface facing towards the top, an outside surface facing away from the top, and a catch extending from the inside surface annularly around the center, filter material being secured between the top and bottom plate. An adaptor for a filter cage or the filter cage itself includes a radial retention ring that engages the catch of the filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.