Surface cleaning device with automated suction control
US11122952B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 19, 2019 |
| Grant date | Sep 21, 2021 |
| Priority date | — |
| Expiry date | Mar 6, 2040 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47L11/4016
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
An extractor is provided. The extractor comprises: a base movable along a surface; a handle configured to be gripped by a user to move the base; a nozzle in fluid communication with a suction motor configured to generate a suction airflow through the nozzle; an encoder operable to generate an encoder signal as a first signal based on user-initiated movement of the base along the surface in a forward direction and as a second signal based on movement in a rearward direction; and a controller operatively connected to the encoder and the suction motor, the controller being configured to change a power to the suction motor to a forward power level based on the first signal during operation of the extractor and to a rearward power level based on the second signal during operation of the extractor, wherein the forward power level is less than the rearward power level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.