Vacuum cleaner and electric motor module thereof
US11486282B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 6, 2020 |
| Grant date | Nov 1, 2022 |
| Priority date | — |
| Expiry date | Jun 19, 2041 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47L9/28
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A vacuum clear and an electric motor module (100) therefor are provided. The electric motor module (100) includes an outer casing (1) provided with an air inlet (10) at a front side thereof and an air outlet (11) at a rear side thereof; an electric motor assembly (2) arranged in the outer casing (1), and cooperating with the outer casing (1) to define an air passage in communication with the air inlet (10) and the air outlet (11); and a silencer (3) arranged at the air inlet (10), defining at least one resonant cavity therein, and the at least one resonant cavity having a side wall provided with a throat in communication with the resonant cavity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.