Vacuum bypass vent and vacuums incorporating such bypass vents
US10092148B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 4, 2014 |
| Grant date | Oct 9, 2018 |
| Priority date | — |
| Expiry date | Aug 21, 2036 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47L9/0072
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A vacuum appliance capable of picking up both wet and dry material is described, wherein the vacuum appliance includes an impeller configured to induce liquid into the vacuum appliance, a motor configured to turn the impeller, a restrictor assembly to prevent the liquid from being ingested into the motor, and a bypass vent assembly configured to allow sufficient air to reach the motor in order to keep the motor cool while the restrictor is preventing the liquid from being ingested into the motor. The vacuum appliance also includes a drum configured to retain the liquid and an impeller intake between the impeller and the drum. The restrictor may comprise a float configured to rise with a level of the liquid in the drum and prevent the liquid from entering the impeller intake. The bypass vent assembly may be configured to allow airflow to bypass the restrictor and/or the drum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.